Metamath Proof Explorer


Theorem nmulprop

Description: Show closure and value of natural multiplication. (Contributed by Scott Fenton, 2-Jun-2026)

Ref Expression
Assertion nmulprop ( ( 𝐴 ∈ On ∧ 𝐵 ∈ On ) → ( ( 𝐴 ·no 𝐵 ) ∈ On ∧ ( 𝐴 ·no 𝐵 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝐵 ( ( 𝑎 ·no 𝐵 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) )

Proof

Step Hyp Ref Expression
1 oveq1 ⊢ ( 𝑝 = 𝑟 → ( 𝑝 ·no 𝑞 ) = ( 𝑟 ·no 𝑞 ) )
2 1 eleq1d ⊢ ( 𝑝 = 𝑟 → ( ( 𝑝 ·no 𝑞 ) ∈ On ↔ ( 𝑟 ·no 𝑞 ) ∈ On ) )
3 oveq1 ⊢ ( 𝑝 = 𝑟 → ( 𝑝 ·no 𝑏 ) = ( 𝑟 ·no 𝑏 ) )
4 3 oveq2d ⊢ ( 𝑝 = 𝑟 → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) = ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) )
5 4 eleq1d ⊢ ( 𝑝 = 𝑟 → ( ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
6 5 ralbidv ⊢ ( 𝑝 = 𝑟 → ( ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
7 6 raleqbi1dv ⊢ ( 𝑝 = 𝑟 → ( ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
8 7 rabbidv ⊢ ( 𝑝 = 𝑟 → { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } = { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
9 8 inteqd ⊢ ( 𝑝 = 𝑟 → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
10 1 9 eqeq12d ⊢ ( 𝑝 = 𝑟 → ( ( 𝑝 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ↔ ( 𝑟 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) )
11 2 10 anbi12d ⊢ ( 𝑝 = 𝑟 → ( ( ( 𝑝 ·no 𝑞 ) ∈ On ∧ ( 𝑝 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ↔ ( ( 𝑟 ·no 𝑞 ) ∈ On ∧ ( 𝑟 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ) )
12 oveq2 ⊢ ( 𝑞 = 𝑠 → ( 𝑟 ·no 𝑞 ) = ( 𝑟 ·no 𝑠 ) )
13 12 eleq1d ⊢ ( 𝑞 = 𝑠 → ( ( 𝑟 ·no 𝑞 ) ∈ On ↔ ( 𝑟 ·no 𝑠 ) ∈ On ) )
14 oveq2 ⊢ ( 𝑞 = 𝑠 → ( 𝑎 ·no 𝑞 ) = ( 𝑎 ·no 𝑠 ) )
15 14 oveq1d ⊢ ( 𝑞 = 𝑠 → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) = ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) )
16 15 eleq1d ⊢ ( 𝑞 = 𝑠 → ( ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
17 16 raleqbi1dv ⊢ ( 𝑞 = 𝑠 → ( ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
18 17 ralbidv ⊢ ( 𝑞 = 𝑠 → ( ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
19 18 rabbidv ⊢ ( 𝑞 = 𝑠 → { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } = { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
20 19 inteqd ⊢ ( 𝑞 = 𝑠 → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
21 12 20 eqeq12d ⊢ ( 𝑞 = 𝑠 → ( ( 𝑟 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ↔ ( 𝑟 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) )
22 13 21 anbi12d ⊢ ( 𝑞 = 𝑠 → ( ( ( 𝑟 ·no 𝑞 ) ∈ On ∧ ( 𝑟 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ↔ ( ( 𝑟 ·no 𝑠 ) ∈ On ∧ ( 𝑟 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ) )
23 oveq1 ⊢ ( 𝑝 = 𝑟 → ( 𝑝 ·no 𝑠 ) = ( 𝑟 ·no 𝑠 ) )
24 23 eleq1d ⊢ ( 𝑝 = 𝑟 → ( ( 𝑝 ·no 𝑠 ) ∈ On ↔ ( 𝑟 ·no 𝑠 ) ∈ On ) )
25 3 oveq2d ⊢ ( 𝑝 = 𝑟 → ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) = ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) )
26 25 eleq1d ⊢ ( 𝑝 = 𝑟 → ( ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
27 26 ralbidv ⊢ ( 𝑝 = 𝑟 → ( ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
28 27 raleqbi1dv ⊢ ( 𝑝 = 𝑟 → ( ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
29 28 rabbidv ⊢ ( 𝑝 = 𝑟 → { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } = { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
30 29 inteqd ⊢ ( 𝑝 = 𝑟 → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
31 23 30 eqeq12d ⊢ ( 𝑝 = 𝑟 → ( ( 𝑝 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ↔ ( 𝑟 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) )
32 24 31 anbi12d ⊢ ( 𝑝 = 𝑟 → ( ( ( 𝑝 ·no 𝑠 ) ∈ On ∧ ( 𝑝 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ↔ ( ( 𝑟 ·no 𝑠 ) ∈ On ∧ ( 𝑟 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ) )
33 oveq1 ⊢ ( 𝑝 = 𝐴 → ( 𝑝 ·no 𝑞 ) = ( 𝐴 ·no 𝑞 ) )
34 33 eleq1d ⊢ ( 𝑝 = 𝐴 → ( ( 𝑝 ·no 𝑞 ) ∈ On ↔ ( 𝐴 ·no 𝑞 ) ∈ On ) )
35 oveq1 ⊢ ( 𝑝 = 𝐴 → ( 𝑝 ·no 𝑏 ) = ( 𝐴 ·no 𝑏 ) )
36 35 oveq2d ⊢ ( 𝑝 = 𝐴 → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) = ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) )
37 36 eleq1d ⊢ ( 𝑝 = 𝐴 → ( ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
38 37 ralbidv ⊢ ( 𝑝 = 𝐴 → ( ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
39 38 raleqbi1dv ⊢ ( 𝑝 = 𝐴 → ( ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
40 39 rabbidv ⊢ ( 𝑝 = 𝐴 → { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } = { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
41 40 inteqd ⊢ ( 𝑝 = 𝐴 → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
42 33 41 eqeq12d ⊢ ( 𝑝 = 𝐴 → ( ( 𝑝 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ↔ ( 𝐴 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) )
43 34 42 anbi12d ⊢ ( 𝑝 = 𝐴 → ( ( ( 𝑝 ·no 𝑞 ) ∈ On ∧ ( 𝑝 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ↔ ( ( 𝐴 ·no 𝑞 ) ∈ On ∧ ( 𝐴 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ) )
44 oveq2 ⊢ ( 𝑞 = 𝐵 → ( 𝐴 ·no 𝑞 ) = ( 𝐴 ·no 𝐵 ) )
45 44 eleq1d ⊢ ( 𝑞 = 𝐵 → ( ( 𝐴 ·no 𝑞 ) ∈ On ↔ ( 𝐴 ·no 𝐵 ) ∈ On ) )
46 oveq2 ⊢ ( 𝑞 = 𝐵 → ( 𝑎 ·no 𝑞 ) = ( 𝑎 ·no 𝐵 ) )
47 46 oveq1d ⊢ ( 𝑞 = 𝐵 → ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) = ( ( 𝑎 ·no 𝐵 ) +no ( 𝐴 ·no 𝑏 ) ) )
48 47 eleq1d ⊢ ( 𝑞 = 𝐵 → ( ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ( ( 𝑎 ·no 𝐵 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
49 48 raleqbi1dv ⊢ ( 𝑞 = 𝐵 → ( ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∀ 𝑏 ∈ 𝐵 ( ( 𝑎 ·no 𝐵 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
50 49 ralbidv ⊢ ( 𝑞 = 𝐵 → ( ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝐵 ( ( 𝑎 ·no 𝐵 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
51 50 rabbidv ⊢ ( 𝑞 = 𝐵 → { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } = { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝐵 ( ( 𝑎 ·no 𝐵 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
52 51 inteqd ⊢ ( 𝑞 = 𝐵 → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝐵 ( ( 𝑎 ·no 𝐵 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
53 44 52 eqeq12d ⊢ ( 𝑞 = 𝐵 → ( ( 𝐴 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ↔ ( 𝐴 ·no 𝐵 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝐵 ( ( 𝑎 ·no 𝐵 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) )
54 45 53 anbi12d ⊢ ( 𝑞 = 𝐵 → ( ( ( 𝐴 ·no 𝑞 ) ∈ On ∧ ( 𝐴 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ↔ ( ( 𝐴 ·no 𝐵 ) ∈ On ∧ ( 𝐴 ·no 𝐵 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝐵 ( ( 𝑎 ·no 𝐵 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ) )
55 simpl ⊢ ( ( ( 𝑟 ·no 𝑠 ) ∈ On ∧ ( 𝑟 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) → ( 𝑟 ·no 𝑠 ) ∈ On )
56 55 2ralimi ⊢ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( ( 𝑟 ·no 𝑠 ) ∈ On ∧ ( 𝑟 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) → ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On )
57 simpl ⊢ ( ( ( 𝑟 ·no 𝑞 ) ∈ On ∧ ( 𝑟 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) → ( 𝑟 ·no 𝑞 ) ∈ On )
58 57 ralimi ⊢ ( ∀ 𝑟 ∈ 𝑝 ( ( 𝑟 ·no 𝑞 ) ∈ On ∧ ( 𝑟 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) → ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On )
59 simpl ⊢ ( ( ( 𝑝 ·no 𝑠 ) ∈ On ∧ ( 𝑝 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) → ( 𝑝 ·no 𝑠 ) ∈ On )
60 59 ralimi ⊢ ( ∀ 𝑠 ∈ 𝑞 ( ( 𝑝 ·no 𝑠 ) ∈ On ∧ ( 𝑝 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) → ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On )
61 56 58 60 3anim123i ⊢ ( ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( ( 𝑟 ·no 𝑠 ) ∈ On ∧ ( 𝑟 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ∧ ∀ 𝑟 ∈ 𝑝 ( ( 𝑟 ·no 𝑞 ) ∈ On ∧ ( 𝑟 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ∧ ∀ 𝑠 ∈ 𝑞 ( ( 𝑝 ·no 𝑠 ) ∈ On ∧ ( 𝑝 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ) → ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) )
62 df-nmul ⊢ ·no = frecs ( { ⟨ 𝑡 , 𝑢 ⟩ ∣ ( 𝑡 ∈ ( On × On ) ∧ 𝑢 ∈ ( On × On ) ∧ ( ( ( 1st ‘ 𝑡 ) E ( 1st ‘ 𝑢 ) ∨ ( 1st ‘ 𝑡 ) = ( 1st ‘ 𝑢 ) ) ∧ ( ( 2nd ‘ 𝑡 ) E ( 2nd ‘ 𝑢 ) ∨ ( 2nd ‘ 𝑡 ) = ( 2nd ‘ 𝑢 ) ) ∧ 𝑡 ≠ 𝑢 ) ) } , ( On × On ) , ( 𝑣 ∈ V , 𝑤 ∈ V ↦ ⦋ ( 1st ‘ 𝑣 ) / 𝑐 ⦌ ⦋ ( 2nd ‘ 𝑣 ) / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } ) )
63 62 on2recsov ⊢ ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) → ( 𝑝 ·no 𝑞 ) = ( ⟨ 𝑝 , 𝑞 ⟩ ( 𝑣 ∈ V , 𝑤 ∈ V ↦ ⦋ ( 1st ‘ 𝑣 ) / 𝑐 ⦌ ⦋ ( 2nd ‘ 𝑣 ) / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } ) ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ) )
64 63 adantr ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ( 𝑝 ·no 𝑞 ) = ( ⟨ 𝑝 , 𝑞 ⟩ ( 𝑣 ∈ V , 𝑤 ∈ V ↦ ⦋ ( 1st ‘ 𝑣 ) / 𝑐 ⦌ ⦋ ( 2nd ‘ 𝑣 ) / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } ) ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ) )
65 opex ⊢ ⟨ 𝑝 , 𝑞 ⟩ ∈ V
66 nmulfn ⊢ ·no Fn ( On × On )
67 fnfun ⊢ ( ·no Fn ( On × On ) → Fun ·no )
68 66 67 ax-mp ⊢ Fun ·no
69 vex ⊢ 𝑝 ∈ V
70 69 sucex ⊢ suc 𝑝 ∈ V
71 vex ⊢ 𝑞 ∈ V
72 71 sucex ⊢ suc 𝑞 ∈ V
73 70 72 xpex ⊢ ( suc 𝑝 × suc 𝑞 ) ∈ V
74 73 difexi ⊢ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ∈ V
75 resfunexg ⊢ ( ( Fun ·no ∧ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ∈ V ) → ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ∈ V )
76 68 74 75 mp2an ⊢ ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ∈ V
77 elelsuc ⊢ ( 𝑎 ∈ 𝑝 → 𝑎 ∈ suc 𝑝 )
78 77 adantr ⊢ ( ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) → 𝑎 ∈ suc 𝑝 )
79 78 adantl ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → 𝑎 ∈ suc 𝑝 )
80 71 sucid ⊢ 𝑞 ∈ suc 𝑞
81 80 a1i ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → 𝑞 ∈ suc 𝑞 )
82 79 81 opelxpd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ⟨ 𝑎 , 𝑞 ⟩ ∈ ( suc 𝑝 × suc 𝑞 ) )
83 eloni ⊢ ( 𝑝 ∈ On → Ord 𝑝 )
84 ordirr ⊢ ( Ord 𝑝 → ¬ 𝑝 ∈ 𝑝 )
85 elequ1 ⊢ ( 𝑎 = 𝑝 → ( 𝑎 ∈ 𝑝 ↔ 𝑝 ∈ 𝑝 ) )
86 85 notbid ⊢ ( 𝑎 = 𝑝 → ( ¬ 𝑎 ∈ 𝑝 ↔ ¬ 𝑝 ∈ 𝑝 ) )
87 86 biimprcd ⊢ ( ¬ 𝑝 ∈ 𝑝 → ( 𝑎 = 𝑝 → ¬ 𝑎 ∈ 𝑝 ) )
88 87 con2d ⊢ ( ¬ 𝑝 ∈ 𝑝 → ( 𝑎 ∈ 𝑝 → ¬ 𝑎 = 𝑝 ) )
89 83 84 88 3syl ⊢ ( 𝑝 ∈ On → ( 𝑎 ∈ 𝑝 → ¬ 𝑎 = 𝑝 ) )
90 89 imp ⊢ ( ( 𝑝 ∈ On ∧ 𝑎 ∈ 𝑝 ) → ¬ 𝑎 = 𝑝 )
91 90 ad2ant2r ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ¬ 𝑎 = 𝑝 )
92 91 intnanrd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ¬ ( 𝑎 = 𝑝 ∧ 𝑞 = 𝑞 ) )
93 opex ⊢ ⟨ 𝑎 , 𝑞 ⟩ ∈ V
94 93 elsn ⊢ ( ⟨ 𝑎 , 𝑞 ⟩ ∈ { ⟨ 𝑝 , 𝑞 ⟩ } ↔ ⟨ 𝑎 , 𝑞 ⟩ = ⟨ 𝑝 , 𝑞 ⟩ )
95 vex ⊢ 𝑎 ∈ V
96 95 71 opth ⊢ ( ⟨ 𝑎 , 𝑞 ⟩ = ⟨ 𝑝 , 𝑞 ⟩ ↔ ( 𝑎 = 𝑝 ∧ 𝑞 = 𝑞 ) )
97 94 96 bitr2i ⊢ ( ( 𝑎 = 𝑝 ∧ 𝑞 = 𝑞 ) ↔ ⟨ 𝑎 , 𝑞 ⟩ ∈ { ⟨ 𝑝 , 𝑞 ⟩ } )
98 92 97 sylnib ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ¬ ⟨ 𝑎 , 𝑞 ⟩ ∈ { ⟨ 𝑝 , 𝑞 ⟩ } )
99 82 98 eldifd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ⟨ 𝑎 , 𝑞 ⟩ ∈ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) )
100 99 fvresd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ‘ ⟨ 𝑎 , 𝑞 ⟩ ) = ( ·no ‘ ⟨ 𝑎 , 𝑞 ⟩ ) )
101 df-ov ⊢ ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) = ( ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ‘ ⟨ 𝑎 , 𝑞 ⟩ )
102 df-ov ⊢ ( 𝑎 ·no 𝑞 ) = ( ·no ‘ ⟨ 𝑎 , 𝑞 ⟩ )
103 100 101 102 3eqtr4g ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) = ( 𝑎 ·no 𝑞 ) )
104 69 sucid ⊢ 𝑝 ∈ suc 𝑝
105 104 a1i ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → 𝑝 ∈ suc 𝑝 )
106 elelsuc ⊢ ( 𝑏 ∈ 𝑞 → 𝑏 ∈ suc 𝑞 )
107 106 adantl ⊢ ( ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) → 𝑏 ∈ suc 𝑞 )
108 107 adantl ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → 𝑏 ∈ suc 𝑞 )
109 105 108 opelxpd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ⟨ 𝑝 , 𝑏 ⟩ ∈ ( suc 𝑝 × suc 𝑞 ) )
110 eloni ⊢ ( 𝑞 ∈ On → Ord 𝑞 )
111 ordirr ⊢ ( Ord 𝑞 → ¬ 𝑞 ∈ 𝑞 )
112 elequ1 ⊢ ( 𝑏 = 𝑞 → ( 𝑏 ∈ 𝑞 ↔ 𝑞 ∈ 𝑞 ) )
113 112 notbid ⊢ ( 𝑏 = 𝑞 → ( ¬ 𝑏 ∈ 𝑞 ↔ ¬ 𝑞 ∈ 𝑞 ) )
114 113 biimprcd ⊢ ( ¬ 𝑞 ∈ 𝑞 → ( 𝑏 = 𝑞 → ¬ 𝑏 ∈ 𝑞 ) )
115 114 con2d ⊢ ( ¬ 𝑞 ∈ 𝑞 → ( 𝑏 ∈ 𝑞 → ¬ 𝑏 = 𝑞 ) )
116 110 111 115 3syl ⊢ ( 𝑞 ∈ On → ( 𝑏 ∈ 𝑞 → ¬ 𝑏 = 𝑞 ) )
117 116 imp ⊢ ( ( 𝑞 ∈ On ∧ 𝑏 ∈ 𝑞 ) → ¬ 𝑏 = 𝑞 )
118 117 ad2ant2l ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ¬ 𝑏 = 𝑞 )
119 118 intnand ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ¬ ( 𝑝 = 𝑝 ∧ 𝑏 = 𝑞 ) )
120 opex ⊢ ⟨ 𝑝 , 𝑏 ⟩ ∈ V
121 120 elsn ⊢ ( ⟨ 𝑝 , 𝑏 ⟩ ∈ { ⟨ 𝑝 , 𝑞 ⟩ } ↔ ⟨ 𝑝 , 𝑏 ⟩ = ⟨ 𝑝 , 𝑞 ⟩ )
122 vex ⊢ 𝑏 ∈ V
123 69 122 opth ⊢ ( ⟨ 𝑝 , 𝑏 ⟩ = ⟨ 𝑝 , 𝑞 ⟩ ↔ ( 𝑝 = 𝑝 ∧ 𝑏 = 𝑞 ) )
124 121 123 bitr2i ⊢ ( ( 𝑝 = 𝑝 ∧ 𝑏 = 𝑞 ) ↔ ⟨ 𝑝 , 𝑏 ⟩ ∈ { ⟨ 𝑝 , 𝑞 ⟩ } )
125 119 124 sylnib ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ¬ ⟨ 𝑝 , 𝑏 ⟩ ∈ { ⟨ 𝑝 , 𝑞 ⟩ } )
126 109 125 eldifd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ⟨ 𝑝 , 𝑏 ⟩ ∈ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) )
127 126 fvresd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ‘ ⟨ 𝑝 , 𝑏 ⟩ ) = ( ·no ‘ ⟨ 𝑝 , 𝑏 ⟩ ) )
128 df-ov ⊢ ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) = ( ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ‘ ⟨ 𝑝 , 𝑏 ⟩ )
129 df-ov ⊢ ( 𝑝 ·no 𝑏 ) = ( ·no ‘ ⟨ 𝑝 , 𝑏 ⟩ )
130 127 128 129 3eqtr4g ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) = ( 𝑝 ·no 𝑏 ) )
131 103 130 oveq12d ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) = ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) )
132 sssucid ⊢ 𝑝 ⊆ suc 𝑝
133 sssucid ⊢ 𝑞 ⊆ suc 𝑞
134 xpss12 ⊢ ( ( 𝑝 ⊆ suc 𝑝 ∧ 𝑞 ⊆ suc 𝑞 ) → ( 𝑝 × 𝑞 ) ⊆ ( suc 𝑝 × suc 𝑞 ) )
135 132 133 134 mp2an ⊢ ( 𝑝 × 𝑞 ) ⊆ ( suc 𝑝 × suc 𝑞 )
136 opelxpi ⊢ ( ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) → ⟨ 𝑎 , 𝑏 ⟩ ∈ ( 𝑝 × 𝑞 ) )
137 135 136 sselid ⊢ ( ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) → ⟨ 𝑎 , 𝑏 ⟩ ∈ ( suc 𝑝 × suc 𝑞 ) )
138 137 adantl ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ⟨ 𝑎 , 𝑏 ⟩ ∈ ( suc 𝑝 × suc 𝑞 ) )
139 118 intnand ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ¬ ( 𝑎 = 𝑝 ∧ 𝑏 = 𝑞 ) )
140 opex ⊢ ⟨ 𝑎 , 𝑏 ⟩ ∈ V
141 140 elsn ⊢ ( ⟨ 𝑎 , 𝑏 ⟩ ∈ { ⟨ 𝑝 , 𝑞 ⟩ } ↔ ⟨ 𝑎 , 𝑏 ⟩ = ⟨ 𝑝 , 𝑞 ⟩ )
142 95 122 opth ⊢ ( ⟨ 𝑎 , 𝑏 ⟩ = ⟨ 𝑝 , 𝑞 ⟩ ↔ ( 𝑎 = 𝑝 ∧ 𝑏 = 𝑞 ) )
143 141 142 bitr2i ⊢ ( ( 𝑎 = 𝑝 ∧ 𝑏 = 𝑞 ) ↔ ⟨ 𝑎 , 𝑏 ⟩ ∈ { ⟨ 𝑝 , 𝑞 ⟩ } )
144 139 143 sylnib ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ¬ ⟨ 𝑎 , 𝑏 ⟩ ∈ { ⟨ 𝑝 , 𝑞 ⟩ } )
145 138 144 eldifd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ⟨ 𝑎 , 𝑏 ⟩ ∈ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) )
146 145 fvresd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ‘ ⟨ 𝑎 , 𝑏 ⟩ ) = ( ·no ‘ ⟨ 𝑎 , 𝑏 ⟩ ) )
147 df-ov ⊢ ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) = ( ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ‘ ⟨ 𝑎 , 𝑏 ⟩ )
148 df-ov ⊢ ( 𝑎 ·no 𝑏 ) = ( ·no ‘ ⟨ 𝑎 , 𝑏 ⟩ )
149 146 147 148 3eqtr4g ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) = ( 𝑎 ·no 𝑏 ) )
150 149 oveq2d ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) = ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) )
151 131 150 eleq12d ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ↔ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
152 151 2ralbidva ⊢ ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) → ( ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ↔ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ) )
153 152 rabbidv ⊢ ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) → { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) } = { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
154 153 inteqd ⊢ ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
155 154 adantr ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
156 oveq1 ⊢ ( 𝑥 = suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) = ( suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) +no ( 𝑎 ·no 𝑏 ) ) )
157 156 eleq2d ⊢ ( 𝑥 = suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → ( ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) +no ( 𝑎 ·no 𝑏 ) ) ) )
158 157 2ralbidv ⊢ ( 𝑥 = suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → ( ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) +no ( 𝑎 ·no 𝑏 ) ) ) )
159 ovex ⊢ ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ V
160 71 159 iunex ⊢ ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ V
161 160 dfiun2 ⊢ ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) = ∪ { 𝑥 ∣ ∃ 𝑐 ∈ 𝑝 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) }
162 159 dfiun2 ⊢ ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) = ∪ { 𝑥 ∣ ∃ 𝑑 ∈ 𝑞 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) }
163 oveq1 ⊢ ( 𝑟 = 𝑐 → ( 𝑟 ·no 𝑞 ) = ( 𝑐 ·no 𝑞 ) )
164 163 eleq1d ⊢ ( 𝑟 = 𝑐 → ( ( 𝑟 ·no 𝑞 ) ∈ On ↔ ( 𝑐 ·no 𝑞 ) ∈ On ) )
165 simplr2 ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) → ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On )
166 165 adantr ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On )
167 simplr ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → 𝑐 ∈ 𝑝 )
168 164 166 167 rspcdva ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → ( 𝑐 ·no 𝑞 ) ∈ On )
169 oveq2 ⊢ ( 𝑠 = 𝑑 → ( 𝑝 ·no 𝑠 ) = ( 𝑝 ·no 𝑑 ) )
170 169 eleq1d ⊢ ( 𝑠 = 𝑑 → ( ( 𝑝 ·no 𝑠 ) ∈ On ↔ ( 𝑝 ·no 𝑑 ) ∈ On ) )
171 simplr3 ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) → ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On )
172 171 adantr ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On )
173 simpr ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → 𝑑 ∈ 𝑞 )
174 170 172 173 rspcdva ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → ( 𝑝 ·no 𝑑 ) ∈ On )
175 168 174 naddcld ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On )
176 eleq1 ⊢ ( 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → ( 𝑥 ∈ On ↔ ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On ) )
177 175 176 syl5ibrcom ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → ( 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → 𝑥 ∈ On ) )
178 177 rexlimdva ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) → ( ∃ 𝑑 ∈ 𝑞 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → 𝑥 ∈ On ) )
179 178 abssdv ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) → { 𝑥 ∣ ∃ 𝑑 ∈ 𝑞 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ⊆ On )
180 71 abrexex ⊢ { 𝑥 ∣ ∃ 𝑑 ∈ 𝑞 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ∈ V
181 180 ssonunii ⊢ ( { 𝑥 ∣ ∃ 𝑑 ∈ 𝑞 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ⊆ On → ∪ { 𝑥 ∣ ∃ 𝑑 ∈ 𝑞 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ∈ On )
182 179 181 syl ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) → ∪ { 𝑥 ∣ ∃ 𝑑 ∈ 𝑞 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ∈ On )
183 162 182 eqeltrid ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) → ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On )
184 eleq1 ⊢ ( 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → ( 𝑥 ∈ On ↔ ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On ) )
185 183 184 syl5ibrcom ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ 𝑐 ∈ 𝑝 ) → ( 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → 𝑥 ∈ On ) )
186 185 rexlimdva ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ( ∃ 𝑐 ∈ 𝑝 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → 𝑥 ∈ On ) )
187 186 abssdv ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → { 𝑥 ∣ ∃ 𝑐 ∈ 𝑝 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ⊆ On )
188 69 abrexex ⊢ { 𝑥 ∣ ∃ 𝑐 ∈ 𝑝 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ∈ V
189 188 ssonunii ⊢ ( { 𝑥 ∣ ∃ 𝑐 ∈ 𝑝 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ⊆ On → ∪ { 𝑥 ∣ ∃ 𝑐 ∈ 𝑝 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ∈ On )
190 187 189 syl ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ∪ { 𝑥 ∣ ∃ 𝑐 ∈ 𝑝 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ∈ On )
191 161 190 eqeltrid ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On )
192 onsuc ⊢ ( ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On → suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On )
193 191 192 syl ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On )
194 simplr2 ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On )
195 164 rspccva ⊢ ( ( ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ 𝑐 ∈ 𝑝 ) → ( 𝑐 ·no 𝑞 ) ∈ On )
196 194 195 sylan ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) ∧ 𝑐 ∈ 𝑝 ) → ( 𝑐 ·no 𝑞 ) ∈ On )
197 196 adantr ⊢ ( ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → ( 𝑐 ·no 𝑞 ) ∈ On )
198 simplr3 ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On )
199 198 adantr ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) ∧ 𝑐 ∈ 𝑝 ) → ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On )
200 170 rspccva ⊢ ( ( ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ∧ 𝑑 ∈ 𝑞 ) → ( 𝑝 ·no 𝑑 ) ∈ On )
201 199 200 sylan ⊢ ( ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → ( 𝑝 ·no 𝑑 ) ∈ On )
202 197 201 naddcld ⊢ ( ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On )
203 202 176 syl5ibrcom ⊢ ( ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) ∧ 𝑐 ∈ 𝑝 ) ∧ 𝑑 ∈ 𝑞 ) → ( 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → 𝑥 ∈ On ) )
204 203 rexlimdva ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) ∧ 𝑐 ∈ 𝑝 ) → ( ∃ 𝑑 ∈ 𝑞 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → 𝑥 ∈ On ) )
205 204 abssdv ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) ∧ 𝑐 ∈ 𝑝 ) → { 𝑥 ∣ ∃ 𝑑 ∈ 𝑞 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ⊆ On )
206 205 181 syl ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) ∧ 𝑐 ∈ 𝑝 ) → ∪ { 𝑥 ∣ ∃ 𝑑 ∈ 𝑞 𝑥 = ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ∈ On )
207 162 206 eqeltrid ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) ∧ 𝑐 ∈ 𝑝 ) → ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On )
208 207 184 syl5ibrcom ⊢ ( ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) ∧ 𝑐 ∈ 𝑝 ) → ( 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → 𝑥 ∈ On ) )
209 208 rexlimdva ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ∃ 𝑐 ∈ 𝑝 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → 𝑥 ∈ On ) )
210 209 abssdv ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → { 𝑥 ∣ ∃ 𝑐 ∈ 𝑝 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ⊆ On )
211 210 189 syl ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ∪ { 𝑥 ∣ ∃ 𝑐 ∈ 𝑝 𝑥 = ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) } ∈ On )
212 161 211 eqeltrid ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On )
213 212 192 syl ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On )
214 oveq1 ⊢ ( 𝑟 = 𝑎 → ( 𝑟 ·no 𝑠 ) = ( 𝑎 ·no 𝑠 ) )
215 214 eleq1d ⊢ ( 𝑟 = 𝑎 → ( ( 𝑟 ·no 𝑠 ) ∈ On ↔ ( 𝑎 ·no 𝑠 ) ∈ On ) )
216 oveq2 ⊢ ( 𝑠 = 𝑏 → ( 𝑎 ·no 𝑠 ) = ( 𝑎 ·no 𝑏 ) )
217 216 eleq1d ⊢ ( 𝑠 = 𝑏 → ( ( 𝑎 ·no 𝑠 ) ∈ On ↔ ( 𝑎 ·no 𝑏 ) ∈ On ) )
218 simplr1 ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On )
219 simprl ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → 𝑎 ∈ 𝑝 )
220 simprr ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → 𝑏 ∈ 𝑞 )
221 215 217 218 219 220 rspc2dv ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( 𝑎 ·no 𝑏 ) ∈ On )
222 naddword1 ⊢ ( ( suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On ∧ ( 𝑎 ·no 𝑏 ) ∈ On ) → suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ⊆ ( suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) +no ( 𝑎 ·no 𝑏 ) ) )
223 213 221 222 syl2anc ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ⊆ ( suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) +no ( 𝑎 ·no 𝑏 ) ) )
224 oveq1 ⊢ ( 𝑐 = 𝑎 → ( 𝑐 ·no 𝑞 ) = ( 𝑎 ·no 𝑞 ) )
225 224 oveq1d ⊢ ( 𝑐 = 𝑎 → ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) = ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) )
226 225 iuneq2d ⊢ ( 𝑐 = 𝑎 → ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) = ∪ 𝑑 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) )
227 226 sseq2d ⊢ ( 𝑐 = 𝑎 → ( ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ↔ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ∪ 𝑑 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ) )
228 oveq2 ⊢ ( 𝑑 = 𝑏 → ( 𝑝 ·no 𝑑 ) = ( 𝑝 ·no 𝑏 ) )
229 228 oveq2d ⊢ ( 𝑑 = 𝑏 → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) = ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) )
230 229 sseq2d ⊢ ( 𝑑 = 𝑏 → ( ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ↔ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ) )
231 ssidd ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) )
232 230 220 231 rspcedvdw ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ∃ 𝑑 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) )
233 ssiun ⊢ ( ∃ 𝑑 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ∪ 𝑑 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) )
234 232 233 syl ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ∪ 𝑑 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) )
235 227 219 234 rspcedvdw ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ∃ 𝑐 ∈ 𝑝 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) )
236 ssiun ⊢ ( ∃ 𝑐 ∈ 𝑝 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) )
237 235 236 syl ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) )
238 simpr2 ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On )
239 simpl ⊢ ( ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) → 𝑎 ∈ 𝑝 )
240 oveq1 ⊢ ( 𝑟 = 𝑎 → ( 𝑟 ·no 𝑞 ) = ( 𝑎 ·no 𝑞 ) )
241 240 eleq1d ⊢ ( 𝑟 = 𝑎 → ( ( 𝑟 ·no 𝑞 ) ∈ On ↔ ( 𝑎 ·no 𝑞 ) ∈ On ) )
242 241 rspccva ⊢ ( ( ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ 𝑎 ∈ 𝑝 ) → ( 𝑎 ·no 𝑞 ) ∈ On )
243 238 239 242 syl2an ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( 𝑎 ·no 𝑞 ) ∈ On )
244 simpr3 ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On )
245 simpr ⊢ ( ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) → 𝑏 ∈ 𝑞 )
246 oveq2 ⊢ ( 𝑠 = 𝑏 → ( 𝑝 ·no 𝑠 ) = ( 𝑝 ·no 𝑏 ) )
247 246 eleq1d ⊢ ( 𝑠 = 𝑏 → ( ( 𝑝 ·no 𝑠 ) ∈ On ↔ ( 𝑝 ·no 𝑏 ) ∈ On ) )
248 247 rspccva ⊢ ( ( ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ∧ 𝑏 ∈ 𝑞 ) → ( 𝑝 ·no 𝑏 ) ∈ On )
249 244 245 248 syl2an ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( 𝑝 ·no 𝑏 ) ∈ On )
250 243 249 naddcld ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ On )
251 onsssuc ⊢ ( ( ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ On ∧ ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ∈ On ) → ( ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ↔ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ) )
252 250 212 251 syl2anc ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ⊆ ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ↔ ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) ) )
253 237 252 mpbid ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) )
254 223 253 sseldd ⊢ ( ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) ∧ ( 𝑎 ∈ 𝑝 ∧ 𝑏 ∈ 𝑞 ) ) → ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) +no ( 𝑎 ·no 𝑏 ) ) )
255 254 ralrimivva ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( suc ∪ 𝑐 ∈ 𝑝 ∪ 𝑑 ∈ 𝑞 ( ( 𝑐 ·no 𝑞 ) +no ( 𝑝 ·no 𝑑 ) ) +no ( 𝑎 ·no 𝑏 ) ) )
256 158 193 255 rspcedvdw ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ∃ 𝑥 ∈ On ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) )
257 onintrab2 ⊢ ( ∃ 𝑥 ∈ On ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) ↔ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ∈ On )
258 256 257 sylib ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ∈ On )
259 155 258 eqeltrd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) } ∈ On )
260 69 71 op1std ⊢ ( 𝑣 = ⟨ 𝑝 , 𝑞 ⟩ → ( 1st ‘ 𝑣 ) = 𝑝 )
261 69 71 op2ndd ⊢ ( 𝑣 = ⟨ 𝑝 , 𝑞 ⟩ → ( 2nd ‘ 𝑣 ) = 𝑞 )
262 261 csbeq1d ⊢ ( 𝑣 = ⟨ 𝑝 , 𝑞 ⟩ → ⦋ ( 2nd ‘ 𝑣 ) / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = ⦋ 𝑞 / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } )
263 260 262 csbeq12dv ⊢ ( 𝑣 = ⟨ 𝑝 , 𝑞 ⟩ → ⦋ ( 1st ‘ 𝑣 ) / 𝑐 ⦌ ⦋ ( 2nd ‘ 𝑣 ) / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = ⦋ 𝑝 / 𝑐 ⦌ ⦋ 𝑞 / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } )
264 oveq1 ⊢ ( 𝑐 = 𝑝 → ( 𝑐 𝑤 𝑏 ) = ( 𝑝 𝑤 𝑏 ) )
265 264 oveq2d ⊢ ( 𝑐 = 𝑝 → ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) = ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) )
266 265 eleq1d ⊢ ( 𝑐 = 𝑝 → ( ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ↔ ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ) )
267 266 ralbidv ⊢ ( 𝑐 = 𝑝 → ( ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ↔ ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ) )
268 267 raleqbi1dv ⊢ ( 𝑐 = 𝑝 → ( ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ↔ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ) )
269 268 rabbidv ⊢ ( 𝑐 = 𝑝 → { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } )
270 269 inteqd ⊢ ( 𝑐 = 𝑝 → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } )
271 270 csbeq2dv ⊢ ( 𝑐 = 𝑝 → ⦋ 𝑞 / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = ⦋ 𝑞 / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } )
272 69 271 csbie ⊢ ⦋ 𝑝 / 𝑐 ⦌ ⦋ 𝑞 / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = ⦋ 𝑞 / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) }
273 oveq2 ⊢ ( 𝑑 = 𝑞 → ( 𝑎 𝑤 𝑑 ) = ( 𝑎 𝑤 𝑞 ) )
274 273 oveq1d ⊢ ( 𝑑 = 𝑞 → ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) = ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) )
275 274 eleq1d ⊢ ( 𝑑 = 𝑞 → ( ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ↔ ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ) )
276 275 raleqbi1dv ⊢ ( 𝑑 = 𝑞 → ( ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ↔ ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ) )
277 276 ralbidv ⊢ ( 𝑑 = 𝑞 → ( ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ↔ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ) )
278 277 rabbidv ⊢ ( 𝑑 = 𝑞 → { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } )
279 278 inteqd ⊢ ( 𝑑 = 𝑞 → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } )
280 71 279 csbie ⊢ ⦋ 𝑞 / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) }
281 272 280 eqtri ⊢ ⦋ 𝑝 / 𝑐 ⦌ ⦋ 𝑞 / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) }
282 oveq ⊢ ( 𝑤 = ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) → ( 𝑎 𝑤 𝑞 ) = ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) )
283 oveq ⊢ ( 𝑤 = ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) → ( 𝑝 𝑤 𝑏 ) = ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) )
284 282 283 oveq12d ⊢ ( 𝑤 = ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) → ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) = ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) )
285 oveq ⊢ ( 𝑤 = ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) → ( 𝑎 𝑤 𝑏 ) = ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) )
286 285 oveq2d ⊢ ( 𝑤 = ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) → ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) = ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) )
287 284 286 eleq12d ⊢ ( 𝑤 = ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) → ( ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ↔ ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ) )
288 287 2ralbidv ⊢ ( 𝑤 = ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) → ( ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) ↔ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ) )
289 288 rabbidv ⊢ ( 𝑤 = ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) → { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) } )
290 289 inteqd ⊢ ( 𝑤 = ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) → ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 𝑤 𝑞 ) +no ( 𝑝 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) } )
291 281 290 eqtrid ⊢ ( 𝑤 = ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) → ⦋ 𝑝 / 𝑐 ⦌ ⦋ 𝑞 / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) } )
292 eqid ⊢ ( 𝑣 ∈ V , 𝑤 ∈ V ↦ ⦋ ( 1st ‘ 𝑣 ) / 𝑐 ⦌ ⦋ ( 2nd ‘ 𝑣 ) / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } ) = ( 𝑣 ∈ V , 𝑤 ∈ V ↦ ⦋ ( 1st ‘ 𝑣 ) / 𝑐 ⦌ ⦋ ( 2nd ‘ 𝑣 ) / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } )
293 263 291 292 ovmpog ⊢ ( ( ⟨ 𝑝 , 𝑞 ⟩ ∈ V ∧ ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ∈ V ∧ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) } ∈ On ) → ( ⟨ 𝑝 , 𝑞 ⟩ ( 𝑣 ∈ V , 𝑤 ∈ V ↦ ⦋ ( 1st ‘ 𝑣 ) / 𝑐 ⦌ ⦋ ( 2nd ‘ 𝑣 ) / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } ) ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) } )
294 65 76 259 293 mp3an12i ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ( ⟨ 𝑝 , 𝑞 ⟩ ( 𝑣 ∈ V , 𝑤 ∈ V ↦ ⦋ ( 1st ‘ 𝑣 ) / 𝑐 ⦌ ⦋ ( 2nd ‘ 𝑣 ) / 𝑑 ⦌ ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑐 ∀ 𝑏 ∈ 𝑑 ( ( 𝑎 𝑤 𝑑 ) +no ( 𝑐 𝑤 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 𝑤 𝑏 ) ) } ) ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑞 ) +no ( 𝑝 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ( ·no ↾ ( ( suc 𝑝 × suc 𝑞 ) ∖ { ⟨ 𝑝 , 𝑞 ⟩ } ) ) 𝑏 ) ) } )
295 64 294 155 3eqtrd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ( 𝑝 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } )
296 295 258 eqeltrd ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ( 𝑝 ·no 𝑞 ) ∈ On )
297 296 295 jca ⊢ ( ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) ∧ ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) ) → ( ( 𝑝 ·no 𝑞 ) ∈ On ∧ ( 𝑝 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) )
298 297 ex ⊢ ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) → ( ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( 𝑟 ·no 𝑠 ) ∈ On ∧ ∀ 𝑟 ∈ 𝑝 ( 𝑟 ·no 𝑞 ) ∈ On ∧ ∀ 𝑠 ∈ 𝑞 ( 𝑝 ·no 𝑠 ) ∈ On ) → ( ( 𝑝 ·no 𝑞 ) ∈ On ∧ ( 𝑝 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ) )
299 61 298 syl5 ⊢ ( ( 𝑝 ∈ On ∧ 𝑞 ∈ On ) → ( ( ∀ 𝑟 ∈ 𝑝 ∀ 𝑠 ∈ 𝑞 ( ( 𝑟 ·no 𝑠 ) ∈ On ∧ ( 𝑟 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ∧ ∀ 𝑟 ∈ 𝑝 ( ( 𝑟 ·no 𝑞 ) ∈ On ∧ ( 𝑟 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑟 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑟 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ∧ ∀ 𝑠 ∈ 𝑞 ( ( 𝑝 ·no 𝑠 ) ∈ On ∧ ( 𝑝 ·no 𝑠 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑠 ( ( 𝑎 ·no 𝑠 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ) → ( ( 𝑝 ·no 𝑞 ) ∈ On ∧ ( 𝑝 ·no 𝑞 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝑝 ∀ 𝑏 ∈ 𝑞 ( ( 𝑎 ·no 𝑞 ) +no ( 𝑝 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) ) )
300 11 22 32 43 54 299 on2ind ⊢ ( ( 𝐴 ∈ On ∧ 𝐵 ∈ On ) → ( ( 𝐴 ·no 𝐵 ) ∈ On ∧ ( 𝐴 ·no 𝐵 ) = ∩ { 𝑥 ∈ On ∣ ∀ 𝑎 ∈ 𝐴 ∀ 𝑏 ∈ 𝐵 ( ( 𝑎 ·no 𝐵 ) +no ( 𝐴 ·no 𝑏 ) ) ∈ ( 𝑥 +no ( 𝑎 ·no 𝑏 ) ) } ) )