Metamath Proof Explorer


Theorem mulsprop

Description: Surreals are closed under multiplication and obey a particular ordering law. Theorem 3.4 of Gonshor p. 17. (Contributed by Scott Fenton, 5-Mar-2025)

Ref Expression
Assertion mulsprop ( ( ( 𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ ( 𝐶 ∈ No ∧ 𝐷 ∈ No ) ∧ ( 𝐸 ∈ No ∧ 𝐹 ∈ No ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝐹 ) → ( ( 𝐶 ·s 𝐹 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝐹 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) )

Proof

Step Hyp Ref Expression
1 bdayon ⊢ ( bday ‘ 𝐴 ) ∈ On
2 bdayon ⊢ ( bday ‘ 𝐵 ) ∈ On
3 naddcl ⊢ ( ( ( bday ‘ 𝐴 ) ∈ On ∧ ( bday ‘ 𝐵 ) ∈ On ) → ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∈ On )
4 1 2 3 mp2an ⊢ ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∈ On
5 bdayon ⊢ ( bday ‘ 𝐶 ) ∈ On
6 bdayon ⊢ ( bday ‘ 𝐸 ) ∈ On
7 naddcl ⊢ ( ( ( bday ‘ 𝐶 ) ∈ On ∧ ( bday ‘ 𝐸 ) ∈ On ) → ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∈ On )
8 5 6 7 mp2an ⊢ ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∈ On
9 bdayon ⊢ ( bday ‘ 𝐷 ) ∈ On
10 bdayon ⊢ ( bday ‘ 𝐹 ) ∈ On
11 naddcl ⊢ ( ( ( bday ‘ 𝐷 ) ∈ On ∧ ( bday ‘ 𝐹 ) ∈ On ) → ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ∈ On )
12 9 10 11 mp2an ⊢ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ∈ On
13 8 12 onun2i ⊢ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∈ On
14 naddcl ⊢ ( ( ( bday ‘ 𝐶 ) ∈ On ∧ ( bday ‘ 𝐹 ) ∈ On ) → ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∈ On )
15 5 10 14 mp2an ⊢ ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∈ On
16 naddcl ⊢ ( ( ( bday ‘ 𝐷 ) ∈ On ∧ ( bday ‘ 𝐸 ) ∈ On ) → ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ∈ On )
17 9 6 16 mp2an ⊢ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ∈ On
18 15 17 onun2i ⊢ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ∈ On
19 13 18 onun2i ⊢ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ∈ On
20 4 19 onun2i ⊢ ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) ∈ On
21 risset ⊢ ( ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) ∈ On ↔ ∃ 𝑥 ∈ On 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) )
22 20 21 mpbi ⊢ ∃ 𝑥 ∈ On 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) )
23 fveq2 ⊢ ( 𝑎 = 𝑔 → ( bday ‘ 𝑎 ) = ( bday ‘ 𝑔 ) )
24 23 oveq1d ⊢ ( 𝑎 = 𝑔 → ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) = ( ( bday ‘ 𝑔 ) +no ( bday ‘ 𝑏 ) ) )
25 24 uneq1d ⊢ ( 𝑎 = 𝑔 → ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) )
26 25 eqeq2d ⊢ ( 𝑎 = 𝑔 → ( 𝑥 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ) )
27 oveq1 ⊢ ( 𝑎 = 𝑔 → ( 𝑎 ·s 𝑏 ) = ( 𝑔 ·s 𝑏 ) )
28 27 eleq1d ⊢ ( 𝑎 = 𝑔 → ( ( 𝑎 ·s 𝑏 ) ∈ No ↔ ( 𝑔 ·s 𝑏 ) ∈ No ) )
29 28 anbi1d ⊢ ( 𝑎 = 𝑔 → ( ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ↔ ( ( 𝑔 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
30 26 29 imbi12d ⊢ ( 𝑎 = 𝑔 → ( ( 𝑥 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑔 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ) )
31 fveq2 ⊢ ( 𝑏 = ℎ → ( bday ‘ 𝑏 ) = ( bday ‘ ℎ ) )
32 31 oveq2d ⊢ ( 𝑏 = ℎ → ( ( bday ‘ 𝑔 ) +no ( bday ‘ 𝑏 ) ) = ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) )
33 32 uneq1d ⊢ ( 𝑏 = ℎ → ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) )
34 33 eqeq2d ⊢ ( 𝑏 = ℎ → ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ) )
35 oveq2 ⊢ ( 𝑏 = ℎ → ( 𝑔 ·s 𝑏 ) = ( 𝑔 ·s ℎ ) )
36 35 eleq1d ⊢ ( 𝑏 = ℎ → ( ( 𝑔 ·s 𝑏 ) ∈ No ↔ ( 𝑔 ·s ℎ ) ∈ No ) )
37 36 anbi1d ⊢ ( 𝑏 = ℎ → ( ( ( 𝑔 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ↔ ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
38 34 37 imbi12d ⊢ ( 𝑏 = ℎ → ( ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑔 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ) )
39 fveq2 ⊢ ( 𝑐 = 𝑖 → ( bday ‘ 𝑐 ) = ( bday ‘ 𝑖 ) )
40 39 oveq1d ⊢ ( 𝑐 = 𝑖 → ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) = ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) )
41 40 uneq1d ⊢ ( 𝑐 = 𝑖 → ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) = ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) )
42 39 oveq1d ⊢ ( 𝑐 = 𝑖 → ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) = ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) )
43 42 uneq1d ⊢ ( 𝑐 = 𝑖 → ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) = ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) )
44 41 43 uneq12d ⊢ ( 𝑐 = 𝑖 → ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) = ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) )
45 44 uneq2d ⊢ ( 𝑐 = 𝑖 → ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) )
46 45 eqeq2d ⊢ ( 𝑐 = 𝑖 → ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ) )
47 breq1 ⊢ ( 𝑐 = 𝑖 → ( 𝑐 <s 𝑑 ↔ 𝑖 <s 𝑑 ) )
48 47 anbi1d ⊢ ( 𝑐 = 𝑖 → ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) ↔ ( 𝑖 <s 𝑑 ∧ 𝑒 <s 𝑓 ) ) )
49 oveq1 ⊢ ( 𝑐 = 𝑖 → ( 𝑐 ·s 𝑓 ) = ( 𝑖 ·s 𝑓 ) )
50 oveq1 ⊢ ( 𝑐 = 𝑖 → ( 𝑐 ·s 𝑒 ) = ( 𝑖 ·s 𝑒 ) )
51 49 50 oveq12d ⊢ ( 𝑐 = 𝑖 → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) = ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) )
52 51 breq1d ⊢ ( 𝑐 = 𝑖 → ( ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ↔ ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) )
53 48 52 imbi12d ⊢ ( 𝑐 = 𝑖 → ( ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ↔ ( ( 𝑖 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) )
54 53 anbi2d ⊢ ( 𝑐 = 𝑖 → ( ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ↔ ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
55 46 54 imbi12d ⊢ ( 𝑐 = 𝑖 → ( ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ) )
56 fveq2 ⊢ ( 𝑑 = 𝑗 → ( bday ‘ 𝑑 ) = ( bday ‘ 𝑗 ) )
57 56 oveq1d ⊢ ( 𝑑 = 𝑗 → ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) = ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) )
58 57 uneq2d ⊢ ( 𝑑 = 𝑗 → ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) = ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) )
59 56 oveq1d ⊢ ( 𝑑 = 𝑗 → ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) = ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) )
60 59 uneq2d ⊢ ( 𝑑 = 𝑗 → ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) = ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) ) )
61 58 60 uneq12d ⊢ ( 𝑑 = 𝑗 → ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) = ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) ) ) )
62 61 uneq2d ⊢ ( 𝑑 = 𝑗 → ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) ) ) ) )
63 62 eqeq2d ⊢ ( 𝑑 = 𝑗 → ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ) )
64 breq2 ⊢ ( 𝑑 = 𝑗 → ( 𝑖 <s 𝑑 ↔ 𝑖 <s 𝑗 ) )
65 64 anbi1d ⊢ ( 𝑑 = 𝑗 → ( ( 𝑖 <s 𝑑 ∧ 𝑒 <s 𝑓 ) ↔ ( 𝑖 <s 𝑗 ∧ 𝑒 <s 𝑓 ) ) )
66 oveq1 ⊢ ( 𝑑 = 𝑗 → ( 𝑑 ·s 𝑓 ) = ( 𝑗 ·s 𝑓 ) )
67 oveq1 ⊢ ( 𝑑 = 𝑗 → ( 𝑑 ·s 𝑒 ) = ( 𝑗 ·s 𝑒 ) )
68 66 67 oveq12d ⊢ ( 𝑑 = 𝑗 → ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) = ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑒 ) ) )
69 68 breq2d ⊢ ( 𝑑 = 𝑗 → ( ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ↔ ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑒 ) ) ) )
70 65 69 imbi12d ⊢ ( 𝑑 = 𝑗 → ( ( ( 𝑖 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ↔ ( ( 𝑖 <s 𝑗 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑒 ) ) ) ) )
71 70 anbi2d ⊢ ( 𝑑 = 𝑗 → ( ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ↔ ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑒 ) ) ) ) ) )
72 63 71 imbi12d ⊢ ( 𝑑 = 𝑗 → ( ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑒 ) ) ) ) ) ) )
73 fveq2 ⊢ ( 𝑒 = 𝑘 → ( bday ‘ 𝑒 ) = ( bday ‘ 𝑘 ) )
74 73 oveq2d ⊢ ( 𝑒 = 𝑘 → ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) = ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) )
75 74 uneq1d ⊢ ( 𝑒 = 𝑘 → ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) = ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) )
76 73 oveq2d ⊢ ( 𝑒 = 𝑘 → ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) = ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) )
77 76 uneq2d ⊢ ( 𝑒 = 𝑘 → ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) ) = ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) )
78 75 77 uneq12d ⊢ ( 𝑒 = 𝑘 → ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) ) ) = ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) )
79 78 uneq2d ⊢ ( 𝑒 = 𝑘 → ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) ) ) ) = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) )
80 79 eqeq2d ⊢ ( 𝑒 = 𝑘 → ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ) )
81 breq1 ⊢ ( 𝑒 = 𝑘 → ( 𝑒 <s 𝑓 ↔ 𝑘 <s 𝑓 ) )
82 81 anbi2d ⊢ ( 𝑒 = 𝑘 → ( ( 𝑖 <s 𝑗 ∧ 𝑒 <s 𝑓 ) ↔ ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑓 ) ) )
83 oveq2 ⊢ ( 𝑒 = 𝑘 → ( 𝑖 ·s 𝑒 ) = ( 𝑖 ·s 𝑘 ) )
84 83 oveq2d ⊢ ( 𝑒 = 𝑘 → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) = ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑘 ) ) )
85 oveq2 ⊢ ( 𝑒 = 𝑘 → ( 𝑗 ·s 𝑒 ) = ( 𝑗 ·s 𝑘 ) )
86 85 oveq2d ⊢ ( 𝑒 = 𝑘 → ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑒 ) ) = ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑘 ) ) )
87 84 86 breq12d ⊢ ( 𝑒 = 𝑘 → ( ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑒 ) ) ↔ ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑘 ) ) ) )
88 82 87 imbi12d ⊢ ( 𝑒 = 𝑘 → ( ( ( 𝑖 <s 𝑗 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑒 ) ) ) ↔ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) )
89 88 anbi2d ⊢ ( 𝑒 = 𝑘 → ( ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑒 ) ) ) ) ↔ ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
90 80 89 imbi12d ⊢ ( 𝑒 = 𝑘 → ( ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑒 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑒 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ) )
91 fveq2 ⊢ ( 𝑓 = 𝑙 → ( bday ‘ 𝑓 ) = ( bday ‘ 𝑙 ) )
92 91 oveq2d ⊢ ( 𝑓 = 𝑙 → ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) = ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) )
93 92 uneq2d ⊢ ( 𝑓 = 𝑙 → ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) = ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) )
94 91 oveq2d ⊢ ( 𝑓 = 𝑙 → ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) = ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) )
95 94 uneq1d ⊢ ( 𝑓 = 𝑙 → ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) = ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) )
96 93 95 uneq12d ⊢ ( 𝑓 = 𝑙 → ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) = ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) )
97 96 uneq2d ⊢ ( 𝑓 = 𝑙 → ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) )
98 97 eqeq2d ⊢ ( 𝑓 = 𝑙 → ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ) )
99 breq2 ⊢ ( 𝑓 = 𝑙 → ( 𝑘 <s 𝑓 ↔ 𝑘 <s 𝑙 ) )
100 99 anbi2d ⊢ ( 𝑓 = 𝑙 → ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑓 ) ↔ ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ) )
101 oveq2 ⊢ ( 𝑓 = 𝑙 → ( 𝑖 ·s 𝑓 ) = ( 𝑖 ·s 𝑙 ) )
102 101 oveq1d ⊢ ( 𝑓 = 𝑙 → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑘 ) ) = ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) )
103 oveq2 ⊢ ( 𝑓 = 𝑙 → ( 𝑗 ·s 𝑓 ) = ( 𝑗 ·s 𝑙 ) )
104 103 oveq1d ⊢ ( 𝑓 = 𝑙 → ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑘 ) ) = ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) )
105 102 104 breq12d ⊢ ( 𝑓 = 𝑙 → ( ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑘 ) ) ↔ ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) )
106 100 105 imbi12d ⊢ ( 𝑓 = 𝑙 → ( ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑘 ) ) ) ↔ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) )
107 106 anbi2d ⊢ ( 𝑓 = 𝑙 → ( ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ↔ ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
108 98 107 imbi12d ⊢ ( 𝑓 = 𝑙 → ( ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑓 ) → ( ( 𝑖 ·s 𝑓 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑓 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ) )
109 30 38 55 72 90 108 cbvral6vw ⊢ ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑥 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑔 ∈ No ∀ ℎ ∈ No ∀ 𝑖 ∈ No ∀ 𝑗 ∈ No ∀ 𝑘 ∈ No ∀ 𝑙 ∈ No ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
110 eqeq1 ⊢ ( 𝑥 = 𝑦 → ( 𝑥 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ↔ 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ) )
111 110 imbi1d ⊢ ( 𝑥 = 𝑦 → ( ( 𝑥 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ) )
112 111 6ralbidv ⊢ ( 𝑥 = 𝑦 → ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑥 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ) )
113 109 112 bitr3id ⊢ ( 𝑥 = 𝑦 → ( ∀ 𝑔 ∈ No ∀ ℎ ∈ No ∀ 𝑖 ∈ No ∀ 𝑗 ∈ No ∀ 𝑘 ∈ No ∀ 𝑙 ∈ No ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ↔ ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ) )
114 raleq ⊢ ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ∀ 𝑦 ∈ 𝑥 ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ) )
115 ralrot3 ⊢ ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
116 ralrot3 ⊢ ( ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
117 ralrot3 ⊢ ( ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
118 r19.23v ⊢ ( ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ( ∃ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
119 risset ⊢ ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ↔ ∃ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) )
120 119 imbi1i ⊢ ( ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ( ∃ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
121 118 120 bitr4i ⊢ ( ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
122 121 2ralbii ⊢ ( ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
123 117 122 bitr3i ⊢ ( ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
124 123 2ralbii ⊢ ( ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
125 116 124 bitr3i ⊢ ( ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
126 125 2ralbii ⊢ ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
127 115 126 bitr3i ⊢ ( ∀ 𝑦 ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
128 114 127 bitrdi ⊢ ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ∀ 𝑦 ∈ 𝑥 ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ↔ ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ) )
129 simpl ⊢ ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
130 simprl1 ⊢ ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → 𝑔 ∈ No )
131 simprl2 ⊢ ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → ℎ ∈ No )
132 129 130 131 mulsproplem11 ⊢ ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → ( 𝑔 ·s ℎ ) ∈ No )
133 129 adantr ⊢ ( ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) ∧ ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ) → ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) )
134 simprl3 ⊢ ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → 𝑖 ∈ No )
135 134 adantr ⊢ ( ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) ∧ ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ) → 𝑖 ∈ No )
136 simprr1 ⊢ ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → 𝑗 ∈ No )
137 136 adantr ⊢ ( ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) ∧ ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ) → 𝑗 ∈ No )
138 simprr2 ⊢ ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → 𝑘 ∈ No )
139 138 adantr ⊢ ( ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) ∧ ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ) → 𝑘 ∈ No )
140 simprr3 ⊢ ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → 𝑙 ∈ No )
141 140 adantr ⊢ ( ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) ∧ ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ) → 𝑙 ∈ No )
142 simprl ⊢ ( ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) ∧ ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ) → 𝑖 <s 𝑗 )
143 simprr ⊢ ( ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) ∧ ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ) → 𝑘 <s 𝑙 )
144 133 135 137 139 141 142 143 mulsproplem14 ⊢ ( ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) ∧ ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) )
145 144 ex ⊢ ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) )
146 132 145 jca ⊢ ( ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) )
147 146 ex ⊢ ( ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) ∈ ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) → ( ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
148 128 147 biimtrdi ⊢ ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ∀ 𝑦 ∈ 𝑥 ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) → ( ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ) )
149 148 impd ⊢ ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( ∀ 𝑦 ∈ 𝑥 ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
150 149 com12 ⊢ ( ( ∀ 𝑦 ∈ 𝑥 ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) ) → ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
151 150 anassrs ⊢ ( ( ( ∀ 𝑦 ∈ 𝑥 ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ) ∧ ( 𝑗 ∈ No ∧ 𝑘 ∈ No ∧ 𝑙 ∈ No ) ) → ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
152 151 ralrimivvva ⊢ ( ( ∀ 𝑦 ∈ 𝑥 ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) ∧ ( 𝑔 ∈ No ∧ ℎ ∈ No ∧ 𝑖 ∈ No ) ) → ∀ 𝑗 ∈ No ∀ 𝑘 ∈ No ∀ 𝑙 ∈ No ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
153 152 ralrimivvva ⊢ ( ∀ 𝑦 ∈ 𝑥 ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) → ∀ 𝑔 ∈ No ∀ ℎ ∈ No ∀ 𝑖 ∈ No ∀ 𝑗 ∈ No ∀ 𝑘 ∈ No ∀ 𝑙 ∈ No ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
154 153 a1i ⊢ ( 𝑥 ∈ On → ( ∀ 𝑦 ∈ 𝑥 ∀ 𝑎 ∈ No ∀ 𝑏 ∈ No ∀ 𝑐 ∈ No ∀ 𝑑 ∈ No ∀ 𝑒 ∈ No ∀ 𝑓 ∈ No ( 𝑦 = ( ( ( bday ‘ 𝑎 ) +no ( bday ‘ 𝑏 ) ) ∪ ( ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑒 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑓 ) ) ) ∪ ( ( ( bday ‘ 𝑐 ) +no ( bday ‘ 𝑓 ) ) ∪ ( ( bday ‘ 𝑑 ) +no ( bday ‘ 𝑒 ) ) ) ) ) → ( ( 𝑎 ·s 𝑏 ) ∈ No ∧ ( ( 𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓 ) → ( ( 𝑐 ·s 𝑓 ) -s ( 𝑐 ·s 𝑒 ) ) <s ( ( 𝑑 ·s 𝑓 ) -s ( 𝑑 ·s 𝑒 ) ) ) ) ) → ∀ 𝑔 ∈ No ∀ ℎ ∈ No ∀ 𝑖 ∈ No ∀ 𝑗 ∈ No ∀ 𝑘 ∈ No ∀ 𝑙 ∈ No ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ) )
155 113 154 tfis2 ⊢ ( 𝑥 ∈ On → ∀ 𝑔 ∈ No ∀ ℎ ∈ No ∀ 𝑖 ∈ No ∀ 𝑗 ∈ No ∀ 𝑘 ∈ No ∀ 𝑙 ∈ No ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
156 fveq2 ⊢ ( 𝑔 = 𝐴 → ( bday ‘ 𝑔 ) = ( bday ‘ 𝐴 ) )
157 156 oveq1d ⊢ ( 𝑔 = 𝐴 → ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) = ( ( bday ‘ 𝐴 ) +no ( bday ‘ ℎ ) ) )
158 157 uneq1d ⊢ ( 𝑔 = 𝐴 → ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) )
159 158 eqeq2d ⊢ ( 𝑔 = 𝐴 → ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ) )
160 oveq1 ⊢ ( 𝑔 = 𝐴 → ( 𝑔 ·s ℎ ) = ( 𝐴 ·s ℎ ) )
161 160 eleq1d ⊢ ( 𝑔 = 𝐴 → ( ( 𝑔 ·s ℎ ) ∈ No ↔ ( 𝐴 ·s ℎ ) ∈ No ) )
162 161 anbi1d ⊢ ( 𝑔 = 𝐴 → ( ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ↔ ( ( 𝐴 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
163 159 162 imbi12d ⊢ ( 𝑔 = 𝐴 → ( ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝐴 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ) )
164 fveq2 ⊢ ( ℎ = 𝐵 → ( bday ‘ ℎ ) = ( bday ‘ 𝐵 ) )
165 164 oveq2d ⊢ ( ℎ = 𝐵 → ( ( bday ‘ 𝐴 ) +no ( bday ‘ ℎ ) ) = ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) )
166 165 uneq1d ⊢ ( ℎ = 𝐵 → ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) )
167 166 eqeq2d ⊢ ( ℎ = 𝐵 → ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ) )
168 oveq2 ⊢ ( ℎ = 𝐵 → ( 𝐴 ·s ℎ ) = ( 𝐴 ·s 𝐵 ) )
169 168 eleq1d ⊢ ( ℎ = 𝐵 → ( ( 𝐴 ·s ℎ ) ∈ No ↔ ( 𝐴 ·s 𝐵 ) ∈ No ) )
170 169 anbi1d ⊢ ( ℎ = 𝐵 → ( ( ( 𝐴 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ↔ ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
171 167 170 imbi12d ⊢ ( ℎ = 𝐵 → ( ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝐴 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ) )
172 fveq2 ⊢ ( 𝑖 = 𝐶 → ( bday ‘ 𝑖 ) = ( bday ‘ 𝐶 ) )
173 172 oveq1d ⊢ ( 𝑖 = 𝐶 → ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) = ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) )
174 173 uneq1d ⊢ ( 𝑖 = 𝐶 → ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) = ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) )
175 172 oveq1d ⊢ ( 𝑖 = 𝐶 → ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) = ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) )
176 175 uneq1d ⊢ ( 𝑖 = 𝐶 → ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) = ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) )
177 174 176 uneq12d ⊢ ( 𝑖 = 𝐶 → ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) = ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) )
178 177 uneq2d ⊢ ( 𝑖 = 𝐶 → ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) )
179 178 eqeq2d ⊢ ( 𝑖 = 𝐶 → ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ) )
180 breq1 ⊢ ( 𝑖 = 𝐶 → ( 𝑖 <s 𝑗 ↔ 𝐶 <s 𝑗 ) )
181 180 anbi1d ⊢ ( 𝑖 = 𝐶 → ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ↔ ( 𝐶 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ) )
182 oveq1 ⊢ ( 𝑖 = 𝐶 → ( 𝑖 ·s 𝑙 ) = ( 𝐶 ·s 𝑙 ) )
183 oveq1 ⊢ ( 𝑖 = 𝐶 → ( 𝑖 ·s 𝑘 ) = ( 𝐶 ·s 𝑘 ) )
184 182 183 oveq12d ⊢ ( 𝑖 = 𝐶 → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) = ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) )
185 184 breq1d ⊢ ( 𝑖 = 𝐶 → ( ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ↔ ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) )
186 181 185 imbi12d ⊢ ( 𝑖 = 𝐶 → ( ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ↔ ( ( 𝐶 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) )
187 186 anbi2d ⊢ ( 𝑖 = 𝐶 → ( ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ↔ ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) )
188 179 187 imbi12d ⊢ ( 𝑖 = 𝐶 → ( ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ) )
189 fveq2 ⊢ ( 𝑗 = 𝐷 → ( bday ‘ 𝑗 ) = ( bday ‘ 𝐷 ) )
190 189 oveq1d ⊢ ( 𝑗 = 𝐷 → ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) = ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) )
191 190 uneq2d ⊢ ( 𝑗 = 𝐷 → ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) = ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) )
192 189 oveq1d ⊢ ( 𝑗 = 𝐷 → ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) = ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) )
193 192 uneq2d ⊢ ( 𝑗 = 𝐷 → ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) = ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) ) )
194 191 193 uneq12d ⊢ ( 𝑗 = 𝐷 → ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) = ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) ) ) )
195 194 uneq2d ⊢ ( 𝑗 = 𝐷 → ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) ) ) ) )
196 195 eqeq2d ⊢ ( 𝑗 = 𝐷 → ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ) )
197 breq2 ⊢ ( 𝑗 = 𝐷 → ( 𝐶 <s 𝑗 ↔ 𝐶 <s 𝐷 ) )
198 197 anbi1d ⊢ ( 𝑗 = 𝐷 → ( ( 𝐶 <s 𝑗 ∧ 𝑘 <s 𝑙 ) ↔ ( 𝐶 <s 𝐷 ∧ 𝑘 <s 𝑙 ) ) )
199 oveq1 ⊢ ( 𝑗 = 𝐷 → ( 𝑗 ·s 𝑙 ) = ( 𝐷 ·s 𝑙 ) )
200 oveq1 ⊢ ( 𝑗 = 𝐷 → ( 𝑗 ·s 𝑘 ) = ( 𝐷 ·s 𝑘 ) )
201 199 200 oveq12d ⊢ ( 𝑗 = 𝐷 → ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) = ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝑘 ) ) )
202 201 breq2d ⊢ ( 𝑗 = 𝐷 → ( ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ↔ ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝑘 ) ) ) )
203 198 202 imbi12d ⊢ ( 𝑗 = 𝐷 → ( ( ( 𝐶 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ↔ ( ( 𝐶 <s 𝐷 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝑘 ) ) ) ) )
204 203 anbi2d ⊢ ( 𝑗 = 𝐷 → ( ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ↔ ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝑘 ) ) ) ) ) )
205 196 204 imbi12d ⊢ ( 𝑗 = 𝐷 → ( ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝑘 ) ) ) ) ) ) )
206 fveq2 ⊢ ( 𝑘 = 𝐸 → ( bday ‘ 𝑘 ) = ( bday ‘ 𝐸 ) )
207 206 oveq2d ⊢ ( 𝑘 = 𝐸 → ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) = ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) )
208 207 uneq1d ⊢ ( 𝑘 = 𝐸 → ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) = ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) )
209 206 oveq2d ⊢ ( 𝑘 = 𝐸 → ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) = ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) )
210 209 uneq2d ⊢ ( 𝑘 = 𝐸 → ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) ) = ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) )
211 208 210 uneq12d ⊢ ( 𝑘 = 𝐸 → ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) ) ) = ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) )
212 211 uneq2d ⊢ ( 𝑘 = 𝐸 → ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) ) ) ) = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) )
213 212 eqeq2d ⊢ ( 𝑘 = 𝐸 → ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) ) )
214 breq1 ⊢ ( 𝑘 = 𝐸 → ( 𝑘 <s 𝑙 ↔ 𝐸 <s 𝑙 ) )
215 214 anbi2d ⊢ ( 𝑘 = 𝐸 → ( ( 𝐶 <s 𝐷 ∧ 𝑘 <s 𝑙 ) ↔ ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝑙 ) ) )
216 oveq2 ⊢ ( 𝑘 = 𝐸 → ( 𝐶 ·s 𝑘 ) = ( 𝐶 ·s 𝐸 ) )
217 216 oveq2d ⊢ ( 𝑘 = 𝐸 → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) = ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝐸 ) ) )
218 oveq2 ⊢ ( 𝑘 = 𝐸 → ( 𝐷 ·s 𝑘 ) = ( 𝐷 ·s 𝐸 ) )
219 218 oveq2d ⊢ ( 𝑘 = 𝐸 → ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝑘 ) ) = ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝐸 ) ) )
220 217 219 breq12d ⊢ ( 𝑘 = 𝐸 → ( ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝑘 ) ) ↔ ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝐸 ) ) ) )
221 215 220 imbi12d ⊢ ( 𝑘 = 𝐸 → ( ( ( 𝐶 <s 𝐷 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝑘 ) ) ) ↔ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) )
222 221 anbi2d ⊢ ( 𝑘 = 𝐸 → ( ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝑘 ) ) ) ) ↔ ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) ) )
223 213 222 imbi12d ⊢ ( 𝑘 = 𝐸 → ( ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝑘 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝑘 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝑘 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) ) ) )
224 fveq2 ⊢ ( 𝑙 = 𝐹 → ( bday ‘ 𝑙 ) = ( bday ‘ 𝐹 ) )
225 224 oveq2d ⊢ ( 𝑙 = 𝐹 → ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) = ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) )
226 225 uneq2d ⊢ ( 𝑙 = 𝐹 → ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) = ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) )
227 224 oveq2d ⊢ ( 𝑙 = 𝐹 → ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) = ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) )
228 227 uneq1d ⊢ ( 𝑙 = 𝐹 → ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) = ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) )
229 226 228 uneq12d ⊢ ( 𝑙 = 𝐹 → ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) = ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) )
230 229 uneq2d ⊢ ( 𝑙 = 𝐹 → ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) )
231 230 eqeq2d ⊢ ( 𝑙 = 𝐹 → ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) ↔ 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) ) )
232 breq2 ⊢ ( 𝑙 = 𝐹 → ( 𝐸 <s 𝑙 ↔ 𝐸 <s 𝐹 ) )
233 232 anbi2d ⊢ ( 𝑙 = 𝐹 → ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝑙 ) ↔ ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝐹 ) ) )
234 oveq2 ⊢ ( 𝑙 = 𝐹 → ( 𝐶 ·s 𝑙 ) = ( 𝐶 ·s 𝐹 ) )
235 234 oveq1d ⊢ ( 𝑙 = 𝐹 → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝐸 ) ) = ( ( 𝐶 ·s 𝐹 ) -s ( 𝐶 ·s 𝐸 ) ) )
236 oveq2 ⊢ ( 𝑙 = 𝐹 → ( 𝐷 ·s 𝑙 ) = ( 𝐷 ·s 𝐹 ) )
237 236 oveq1d ⊢ ( 𝑙 = 𝐹 → ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝐸 ) ) = ( ( 𝐷 ·s 𝐹 ) -s ( 𝐷 ·s 𝐸 ) ) )
238 235 237 breq12d ⊢ ( 𝑙 = 𝐹 → ( ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝐸 ) ) ↔ ( ( 𝐶 ·s 𝐹 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝐹 ) -s ( 𝐷 ·s 𝐸 ) ) ) )
239 233 238 imbi12d ⊢ ( 𝑙 = 𝐹 → ( ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝐸 ) ) ) ↔ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝐹 ) → ( ( 𝐶 ·s 𝐹 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝐹 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) )
240 239 anbi2d ⊢ ( 𝑙 = 𝐹 → ( ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) ↔ ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝐹 ) → ( ( 𝐶 ·s 𝐹 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝐹 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) ) )
241 231 240 imbi12d ⊢ ( 𝑙 = 𝐹 → ( ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝑙 ) → ( ( 𝐶 ·s 𝑙 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝑙 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) ) ↔ ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝐹 ) → ( ( 𝐶 ·s 𝐹 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝐹 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) ) ) )
242 163 171 188 205 223 241 rspc6v ⊢ ( ( ( 𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ ( 𝐶 ∈ No ∧ 𝐷 ∈ No ) ∧ ( 𝐸 ∈ No ∧ 𝐹 ∈ No ) ) → ( ∀ 𝑔 ∈ No ∀ ℎ ∈ No ∀ 𝑖 ∈ No ∀ 𝑗 ∈ No ∀ 𝑘 ∈ No ∀ 𝑙 ∈ No ( 𝑥 = ( ( ( bday ‘ 𝑔 ) +no ( bday ‘ ℎ ) ) ∪ ( ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑘 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑙 ) ) ) ∪ ( ( ( bday ‘ 𝑖 ) +no ( bday ‘ 𝑙 ) ) ∪ ( ( bday ‘ 𝑗 ) +no ( bday ‘ 𝑘 ) ) ) ) ) → ( ( 𝑔 ·s ℎ ) ∈ No ∧ ( ( 𝑖 <s 𝑗 ∧ 𝑘 <s 𝑙 ) → ( ( 𝑖 ·s 𝑙 ) -s ( 𝑖 ·s 𝑘 ) ) <s ( ( 𝑗 ·s 𝑙 ) -s ( 𝑗 ·s 𝑘 ) ) ) ) ) → ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝐹 ) → ( ( 𝐶 ·s 𝐹 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝐹 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) ) ) )
243 155 242 syl5com ⊢ ( 𝑥 ∈ On → ( ( ( 𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ ( 𝐶 ∈ No ∧ 𝐷 ∈ No ) ∧ ( 𝐸 ∈ No ∧ 𝐹 ∈ No ) ) → ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝐹 ) → ( ( 𝐶 ·s 𝐹 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝐹 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) ) ) )
244 243 com23 ⊢ ( 𝑥 ∈ On → ( 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) → ( ( ( 𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ ( 𝐶 ∈ No ∧ 𝐷 ∈ No ) ∧ ( 𝐸 ∈ No ∧ 𝐹 ∈ No ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝐹 ) → ( ( 𝐶 ·s 𝐹 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝐹 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) ) ) )
245 244 rexlimiv ⊢ ( ∃ 𝑥 ∈ On 𝑥 = ( ( ( bday ‘ 𝐴 ) +no ( bday ‘ 𝐵 ) ) ∪ ( ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐸 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐹 ) ) ) ∪ ( ( ( bday ‘ 𝐶 ) +no ( bday ‘ 𝐹 ) ) ∪ ( ( bday ‘ 𝐷 ) +no ( bday ‘ 𝐸 ) ) ) ) ) → ( ( ( 𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ ( 𝐶 ∈ No ∧ 𝐷 ∈ No ) ∧ ( 𝐸 ∈ No ∧ 𝐹 ∈ No ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝐹 ) → ( ( 𝐶 ·s 𝐹 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝐹 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) ) )
246 22 245 ax-mp ⊢ ( ( ( 𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ ( 𝐶 ∈ No ∧ 𝐷 ∈ No ) ∧ ( 𝐸 ∈ No ∧ 𝐹 ∈ No ) ) → ( ( 𝐴 ·s 𝐵 ) ∈ No ∧ ( ( 𝐶 <s 𝐷 ∧ 𝐸 <s 𝐹 ) → ( ( 𝐶 ·s 𝐹 ) -s ( 𝐶 ·s 𝐸 ) ) <s ( ( 𝐷 ·s 𝐹 ) -s ( 𝐷 ·s 𝐸 ) ) ) ) )