Metamath Proof Explorer


Theorem nadddi

Description: Natural multiplication distributes over natural addition. (Contributed by Scott Fenton, 27-Jul-2026)

Ref Expression
Assertion nadddi ( ( 𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On ) → ( 𝐴 ·no ( 𝐵 +no 𝐶 ) ) = ( ( 𝐴 ·no 𝐵 ) +no ( 𝐴 ·no 𝐶 ) ) )

Proof

Step Hyp Ref Expression
1 oveq1 ( 𝑎 = 𝑑 → ( 𝑎 ·no ( 𝑏 +no 𝑐 ) ) = ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) )
2 oveq1 ( 𝑎 = 𝑑 → ( 𝑎 ·no 𝑏 ) = ( 𝑑 ·no 𝑏 ) )
3 oveq1 ( 𝑎 = 𝑑 → ( 𝑎 ·no 𝑐 ) = ( 𝑑 ·no 𝑐 ) )
4 2 3 oveq12d ( 𝑎 = 𝑑 → ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) )
5 1 4 eqeq12d ( 𝑎 = 𝑑 → ( ( 𝑎 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑐 ) ) ↔ ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ) )
6 oveq1 ( 𝑏 = 𝑒 → ( 𝑏 +no 𝑐 ) = ( 𝑒 +no 𝑐 ) )
7 6 oveq2d ( 𝑏 = 𝑒 → ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) )
8 oveq2 ( 𝑏 = 𝑒 → ( 𝑑 ·no 𝑏 ) = ( 𝑑 ·no 𝑒 ) )
9 8 oveq1d ( 𝑏 = 𝑒 → ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) )
10 7 9 eqeq12d ( 𝑏 = 𝑒 → ( ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ↔ ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ) )
11 oveq2 ( 𝑐 = 𝑓 → ( 𝑒 +no 𝑐 ) = ( 𝑒 +no 𝑓 ) )
12 11 oveq2d ( 𝑐 = 𝑓 → ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) )
13 oveq2 ( 𝑐 = 𝑓 → ( 𝑑 ·no 𝑐 ) = ( 𝑑 ·no 𝑓 ) )
14 13 oveq2d ( 𝑐 = 𝑓 → ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) )
15 12 14 eqeq12d ( 𝑐 = 𝑓 → ( ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ↔ ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ) )
16 oveq1 ( 𝑎 = 𝑑 → ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) )
17 oveq1 ( 𝑎 = 𝑑 → ( 𝑎 ·no 𝑒 ) = ( 𝑑 ·no 𝑒 ) )
18 oveq1 ( 𝑎 = 𝑑 → ( 𝑎 ·no 𝑓 ) = ( 𝑑 ·no 𝑓 ) )
19 17 18 oveq12d ( 𝑎 = 𝑑 → ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) )
20 16 19 eqeq12d ( 𝑎 = 𝑑 → ( ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ↔ ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ) )
21 oveq1 ( 𝑏 = 𝑒 → ( 𝑏 +no 𝑓 ) = ( 𝑒 +no 𝑓 ) )
22 21 oveq2d ( 𝑏 = 𝑒 → ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) )
23 oveq2 ( 𝑏 = 𝑒 → ( 𝑎 ·no 𝑏 ) = ( 𝑎 ·no 𝑒 ) )
24 23 oveq1d ( 𝑏 = 𝑒 → ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) )
25 22 24 eqeq12d ( 𝑏 = 𝑒 → ( ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ↔ ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ) )
26 21 oveq2d ( 𝑏 = 𝑒 → ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) )
27 8 oveq1d ( 𝑏 = 𝑒 → ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) )
28 26 27 eqeq12d ( 𝑏 = 𝑒 → ( ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ↔ ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ) )
29 11 oveq2d ( 𝑐 = 𝑓 → ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) )
30 oveq2 ( 𝑐 = 𝑓 → ( 𝑎 ·no 𝑐 ) = ( 𝑎 ·no 𝑓 ) )
31 30 oveq2d ( 𝑐 = 𝑓 → ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) )
32 29 31 eqeq12d ( 𝑐 = 𝑓 → ( ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ↔ ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ) )
33 oveq1 ( 𝑎 = 𝐴 → ( 𝑎 ·no ( 𝑏 +no 𝑐 ) ) = ( 𝐴 ·no ( 𝑏 +no 𝑐 ) ) )
34 oveq1 ( 𝑎 = 𝐴 → ( 𝑎 ·no 𝑏 ) = ( 𝐴 ·no 𝑏 ) )
35 oveq1 ( 𝑎 = 𝐴 → ( 𝑎 ·no 𝑐 ) = ( 𝐴 ·no 𝑐 ) )
36 34 35 oveq12d ( 𝑎 = 𝐴 → ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑐 ) ) = ( ( 𝐴 ·no 𝑏 ) +no ( 𝐴 ·no 𝑐 ) ) )
37 33 36 eqeq12d ( 𝑎 = 𝐴 → ( ( 𝑎 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑐 ) ) ↔ ( 𝐴 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝐴 ·no 𝑏 ) +no ( 𝐴 ·no 𝑐 ) ) ) )
38 oveq1 ( 𝑏 = 𝐵 → ( 𝑏 +no 𝑐 ) = ( 𝐵 +no 𝑐 ) )
39 38 oveq2d ( 𝑏 = 𝐵 → ( 𝐴 ·no ( 𝑏 +no 𝑐 ) ) = ( 𝐴 ·no ( 𝐵 +no 𝑐 ) ) )
40 oveq2 ( 𝑏 = 𝐵 → ( 𝐴 ·no 𝑏 ) = ( 𝐴 ·no 𝐵 ) )
41 40 oveq1d ( 𝑏 = 𝐵 → ( ( 𝐴 ·no 𝑏 ) +no ( 𝐴 ·no 𝑐 ) ) = ( ( 𝐴 ·no 𝐵 ) +no ( 𝐴 ·no 𝑐 ) ) )
42 39 41 eqeq12d ( 𝑏 = 𝐵 → ( ( 𝐴 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝐴 ·no 𝑏 ) +no ( 𝐴 ·no 𝑐 ) ) ↔ ( 𝐴 ·no ( 𝐵 +no 𝑐 ) ) = ( ( 𝐴 ·no 𝐵 ) +no ( 𝐴 ·no 𝑐 ) ) ) )
43 oveq2 ( 𝑐 = 𝐶 → ( 𝐵 +no 𝑐 ) = ( 𝐵 +no 𝐶 ) )
44 43 oveq2d ( 𝑐 = 𝐶 → ( 𝐴 ·no ( 𝐵 +no 𝑐 ) ) = ( 𝐴 ·no ( 𝐵 +no 𝐶 ) ) )
45 oveq2 ( 𝑐 = 𝐶 → ( 𝐴 ·no 𝑐 ) = ( 𝐴 ·no 𝐶 ) )
46 45 oveq2d ( 𝑐 = 𝐶 → ( ( 𝐴 ·no 𝐵 ) +no ( 𝐴 ·no 𝑐 ) ) = ( ( 𝐴 ·no 𝐵 ) +no ( 𝐴 ·no 𝐶 ) ) )
47 44 46 eqeq12d ( 𝑐 = 𝐶 → ( ( 𝐴 ·no ( 𝐵 +no 𝑐 ) ) = ( ( 𝐴 ·no 𝐵 ) +no ( 𝐴 ·no 𝑐 ) ) ↔ ( 𝐴 ·no ( 𝐵 +no 𝐶 ) ) = ( ( 𝐴 ·no 𝐵 ) +no ( 𝐴 ·no 𝐶 ) ) ) )
48 simpl1 ( ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) ∧ ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) ) → 𝑎 ∈ On )
49 simpl2 ( ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) ∧ ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) ) → 𝑏 ∈ On )
50 simpl3 ( ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) ∧ ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) ) → 𝑐 ∈ On )
51 simpr21 ( ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) ∧ ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) ) → ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) )
52 simpr23 ( ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) ∧ ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) ) → ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) )
53 simpr3 ( ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) ∧ ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) ) → ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) )
54 simpr12 ( ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) ∧ ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) ) → ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) )
55 simpr13 ( ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) ∧ ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) ) → ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) )
56 48 49 50 51 52 53 54 55 nadddilem4 ( ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) ∧ ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) ) → ( 𝑎 ·no ( 𝑏 +no 𝑐 ) ) ⊆ ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑐 ) ) )
57 48 49 50 51 52 53 54 55 nadddilem2 ( ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) ∧ ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) ) → ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑐 ) ) ⊆ ( 𝑎 ·no ( 𝑏 +no 𝑐 ) ) )
58 56 57 eqssd ( ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) ∧ ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) ) → ( 𝑎 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑐 ) ) )
59 58 ex ( ( 𝑎 ∈ On ∧ 𝑏 ∈ On ∧ 𝑐 ∈ On ) → ( ( ( ∀ 𝑑𝑎𝑒𝑏𝑓𝑐 ( 𝑑 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑓 ) ) ∧ ∀ 𝑑𝑎𝑒𝑏 ( 𝑑 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑒 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑑𝑎𝑓𝑐 ( 𝑑 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑓 ) ) ) ∧ ( ∀ 𝑑𝑎 ( 𝑑 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑑 ·no 𝑏 ) +no ( 𝑑 ·no 𝑐 ) ) ∧ ∀ 𝑒𝑏𝑓𝑐 ( 𝑎 ·no ( 𝑒 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑓 ) ) ∧ ∀ 𝑒𝑏 ( 𝑎 ·no ( 𝑒 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑒 ) +no ( 𝑎 ·no 𝑐 ) ) ) ∧ ∀ 𝑓𝑐 ( 𝑎 ·no ( 𝑏 +no 𝑓 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑓 ) ) ) → ( 𝑎 ·no ( 𝑏 +no 𝑐 ) ) = ( ( 𝑎 ·no 𝑏 ) +no ( 𝑎 ·no 𝑐 ) ) ) )
60 5 10 15 20 25 28 32 37 42 47 59 on3ind ( ( 𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On ) → ( 𝐴 ·no ( 𝐵 +no 𝐶 ) ) = ( ( 𝐴 ·no 𝐵 ) +no ( 𝐴 ·no 𝐶 ) ) )