Theorem odi 8615

Description: Distributive law for ordinal arithmetic (left-distributivity). Proposition 8.25 of [TakeutiZaring] p. 64. Theorem 4.3 of [Schloeder] p. 12. (Contributed by NM, 26-Dec-2004.)

Assertion

Ref	Expression
odi	⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴 ·o (𝐵 +o 𝐶)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝐶)))

Proof of Theorem odi

Dummy variables 𝑥 𝑦 𝑧 𝑤 𝑣 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		oveq2 7438	. . . . . 6 ⊢ (𝑥 = ∅ → (𝐵 +o 𝑥) = (𝐵 +o ∅))
2	1	oveq2d 7446	. . . . 5 ⊢ (𝑥 = ∅ → (𝐴 ·o (𝐵 +o 𝑥)) = (𝐴 ·o (𝐵 +o ∅)))
3		oveq2 7438	. . . . . 6 ⊢ (𝑥 = ∅ → (𝐴 ·o 𝑥) = (𝐴 ·o ∅))
4	3	oveq2d 7446	. . . . 5 ⊢ (𝑥 = ∅ → ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o ∅)))
5	2, 4	eqeq12d 2750	. . . 4 ⊢ (𝑥 = ∅ → ((𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) ↔ (𝐴 ·o (𝐵 +o ∅)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o ∅))))
6		oveq2 7438	. . . . . 6 ⊢ (𝑥 = 𝑦 → (𝐵 +o 𝑥) = (𝐵 +o 𝑦))
7	6	oveq2d 7446	. . . . 5 ⊢ (𝑥 = 𝑦 → (𝐴 ·o (𝐵 +o 𝑥)) = (𝐴 ·o (𝐵 +o 𝑦)))
8		oveq2 7438	. . . . . 6 ⊢ (𝑥 = 𝑦 → (𝐴 ·o 𝑥) = (𝐴 ·o 𝑦))
9	8	oveq2d 7446	. . . . 5 ⊢ (𝑥 = 𝑦 → ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))
10	7, 9	eqeq12d 2750	. . . 4 ⊢ (𝑥 = 𝑦 → ((𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) ↔ (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))))
11		oveq2 7438	. . . . . 6 ⊢ (𝑥 = suc 𝑦 → (𝐵 +o 𝑥) = (𝐵 +o suc 𝑦))
12	11	oveq2d 7446	. . . . 5 ⊢ (𝑥 = suc 𝑦 → (𝐴 ·o (𝐵 +o 𝑥)) = (𝐴 ·o (𝐵 +o suc 𝑦)))
13		oveq2 7438	. . . . . 6 ⊢ (𝑥 = suc 𝑦 → (𝐴 ·o 𝑥) = (𝐴 ·o suc 𝑦))
14	13	oveq2d 7446	. . . . 5 ⊢ (𝑥 = suc 𝑦 → ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o suc 𝑦)))
15	12, 14	eqeq12d 2750	. . . 4 ⊢ (𝑥 = suc 𝑦 → ((𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) ↔ (𝐴 ·o (𝐵 +o suc 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o suc 𝑦))))
16		oveq2 7438	. . . . . 6 ⊢ (𝑥 = 𝐶 → (𝐵 +o 𝑥) = (𝐵 +o 𝐶))
17	16	oveq2d 7446	. . . . 5 ⊢ (𝑥 = 𝐶 → (𝐴 ·o (𝐵 +o 𝑥)) = (𝐴 ·o (𝐵 +o 𝐶)))
18		oveq2 7438	. . . . . 6 ⊢ (𝑥 = 𝐶 → (𝐴 ·o 𝑥) = (𝐴 ·o 𝐶))
19	18	oveq2d 7446	. . . . 5 ⊢ (𝑥 = 𝐶 → ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝐶)))
20	17, 19	eqeq12d 2750	. . . 4 ⊢ (𝑥 = 𝐶 → ((𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) ↔ (𝐴 ·o (𝐵 +o 𝐶)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝐶))))
21		omcl 8572	. . . . . 6 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ·o 𝐵) ∈ On)
22		oa0 8552	. . . . . 6 ⊢ ((𝐴 ·o 𝐵) ∈ On → ((𝐴 ·o 𝐵) +o ∅) = (𝐴 ·o 𝐵))
23	21, 22	syl 17	. . . . 5 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((𝐴 ·o 𝐵) +o ∅) = (𝐴 ·o 𝐵))
24		om0 8553	. . . . . . 7 ⊢ (𝐴 ∈ On → (𝐴 ·o ∅) = ∅)
25	24	adantr 480	. . . . . 6 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ·o ∅) = ∅)
26	25	oveq2d 7446	. . . . 5 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((𝐴 ·o 𝐵) +o (𝐴 ·o ∅)) = ((𝐴 ·o 𝐵) +o ∅))
27		oa0 8552	. . . . . . 7 ⊢ (𝐵 ∈ On → (𝐵 +o ∅) = 𝐵)
28	27	adantl 481	. . . . . 6 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐵 +o ∅) = 𝐵)
29	28	oveq2d 7446	. . . . 5 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ·o (𝐵 +o ∅)) = (𝐴 ·o 𝐵))
30	23, 26, 29	3eqtr4rd 2785	. . . 4 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ·o (𝐵 +o ∅)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o ∅)))
31		oveq1 7437	. . . . . . . 8 ⊢ ((𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → ((𝐴 ·o (𝐵 +o 𝑦)) +o 𝐴) = (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴))
32		oasuc 8560	. . . . . . . . . . . 12 ⊢ ((𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐵 +o suc 𝑦) = suc (𝐵 +o 𝑦))
33	32	3adant1 1129	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐵 +o suc 𝑦) = suc (𝐵 +o 𝑦))
34	33	oveq2d 7446	. . . . . . . . . 10 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐴 ·o (𝐵 +o suc 𝑦)) = (𝐴 ·o suc (𝐵 +o 𝑦)))
35		oacl 8571	. . . . . . . . . . . 12 ⊢ ((𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐵 +o 𝑦) ∈ On)
36		omsuc 8562	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ On ∧ (𝐵 +o 𝑦) ∈ On) → (𝐴 ·o suc (𝐵 +o 𝑦)) = ((𝐴 ·o (𝐵 +o 𝑦)) +o 𝐴))
37	35, 36	sylan2 593	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ On ∧ (𝐵 ∈ On ∧ 𝑦 ∈ On)) → (𝐴 ·o suc (𝐵 +o 𝑦)) = ((𝐴 ·o (𝐵 +o 𝑦)) +o 𝐴))
38	37	3impb 1114	. . . . . . . . . 10 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐴 ·o suc (𝐵 +o 𝑦)) = ((𝐴 ·o (𝐵 +o 𝑦)) +o 𝐴))
39	34, 38	eqtrd 2774	. . . . . . . . 9 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐴 ·o (𝐵 +o suc 𝑦)) = ((𝐴 ·o (𝐵 +o 𝑦)) +o 𝐴))
40		omsuc 8562	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ On ∧ 𝑦 ∈ On) → (𝐴 ·o suc 𝑦) = ((𝐴 ·o 𝑦) +o 𝐴))
41	40	3adant2 1130	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐴 ·o suc 𝑦) = ((𝐴 ·o 𝑦) +o 𝐴))
42	41	oveq2d 7446	. . . . . . . . . 10 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝑦 ∈ On) → ((𝐴 ·o 𝐵) +o (𝐴 ·o suc 𝑦)) = ((𝐴 ·o 𝐵) +o ((𝐴 ·o 𝑦) +o 𝐴)))
43		omcl 8572	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐴 ∈ On ∧ 𝑦 ∈ On) → (𝐴 ·o 𝑦) ∈ On)
44		oaass 8597	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝐴 ·o 𝐵) ∈ On ∧ (𝐴 ·o 𝑦) ∈ On ∧ 𝐴 ∈ On) → (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴) = ((𝐴 ·o 𝐵) +o ((𝐴 ·o 𝑦) +o 𝐴)))
45	21, 44	syl3an1 1162	. . . . . . . . . . . . . . . . 17 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐴 ·o 𝑦) ∈ On ∧ 𝐴 ∈ On) → (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴) = ((𝐴 ·o 𝐵) +o ((𝐴 ·o 𝑦) +o 𝐴)))
46	43, 45	syl3an2 1163	. . . . . . . . . . . . . . . 16 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝐴 ∈ On ∧ 𝑦 ∈ On) ∧ 𝐴 ∈ On) → (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴) = ((𝐴 ·o 𝐵) +o ((𝐴 ·o 𝑦) +o 𝐴)))
47	46	3exp 1118	. . . . . . . . . . . . . . 15 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((𝐴 ∈ On ∧ 𝑦 ∈ On) → (𝐴 ∈ On → (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴) = ((𝐴 ·o 𝐵) +o ((𝐴 ·o 𝑦) +o 𝐴)))))
48	47	exp4b 430	. . . . . . . . . . . . . 14 ⊢ (𝐴 ∈ On → (𝐵 ∈ On → (𝐴 ∈ On → (𝑦 ∈ On → (𝐴 ∈ On → (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴) = ((𝐴 ·o 𝐵) +o ((𝐴 ·o 𝑦) +o 𝐴)))))))
49	48	pm2.43a 54	. . . . . . . . . . . . 13 ⊢ (𝐴 ∈ On → (𝐵 ∈ On → (𝑦 ∈ On → (𝐴 ∈ On → (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴) = ((𝐴 ·o 𝐵) +o ((𝐴 ·o 𝑦) +o 𝐴))))))
50	49	com4r 94	. . . . . . . . . . . 12 ⊢ (𝐴 ∈ On → (𝐴 ∈ On → (𝐵 ∈ On → (𝑦 ∈ On → (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴) = ((𝐴 ·o 𝐵) +o ((𝐴 ·o 𝑦) +o 𝐴))))))
51	50	pm2.43i 52	. . . . . . . . . . 11 ⊢ (𝐴 ∈ On → (𝐵 ∈ On → (𝑦 ∈ On → (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴) = ((𝐴 ·o 𝐵) +o ((𝐴 ·o 𝑦) +o 𝐴)))))
52	51	3imp 1110	. . . . . . . . . 10 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝑦 ∈ On) → (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴) = ((𝐴 ·o 𝐵) +o ((𝐴 ·o 𝑦) +o 𝐴)))
53	42, 52	eqtr4d 2777	. . . . . . . . 9 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝑦 ∈ On) → ((𝐴 ·o 𝐵) +o (𝐴 ·o suc 𝑦)) = (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴))
54	39, 53	eqeq12d 2750	. . . . . . . 8 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝑦 ∈ On) → ((𝐴 ·o (𝐵 +o suc 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o suc 𝑦)) ↔ ((𝐴 ·o (𝐵 +o 𝑦)) +o 𝐴) = (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) +o 𝐴)))
55	31, 54	imbitrrid 246	. . . . . . 7 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝑦 ∈ On) → ((𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → (𝐴 ·o (𝐵 +o suc 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o suc 𝑦))))
56	55	3exp 1118	. . . . . 6 ⊢ (𝐴 ∈ On → (𝐵 ∈ On → (𝑦 ∈ On → ((𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → (𝐴 ·o (𝐵 +o suc 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o suc 𝑦))))))
57	56	com3r 87	. . . . 5 ⊢ (𝑦 ∈ On → (𝐴 ∈ On → (𝐵 ∈ On → ((𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → (𝐴 ·o (𝐵 +o suc 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o suc 𝑦))))))
58	57	impd 410	. . . 4 ⊢ (𝑦 ∈ On → ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → (𝐴 ·o (𝐵 +o suc 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o suc 𝑦)))))
59		vex 3481	. . . . . . . . . . . . . 14 ⊢ 𝑥 ∈ V
60		limelon 6449	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ V ∧ Lim 𝑥) → 𝑥 ∈ On)
61	59, 60	mpan 690	. . . . . . . . . . . . 13 ⊢ (Lim 𝑥 → 𝑥 ∈ On)
62		oacl 8571	. . . . . . . . . . . . . . 15 ⊢ ((𝐵 ∈ On ∧ 𝑥 ∈ On) → (𝐵 +o 𝑥) ∈ On)
63		om0r 8575	. . . . . . . . . . . . . . 15 ⊢ ((𝐵 +o 𝑥) ∈ On → (∅ ·o (𝐵 +o 𝑥)) = ∅)
64	62, 63	syl 17	. . . . . . . . . . . . . 14 ⊢ ((𝐵 ∈ On ∧ 𝑥 ∈ On) → (∅ ·o (𝐵 +o 𝑥)) = ∅)
65		om0r 8575	. . . . . . . . . . . . . . . 16 ⊢ (𝐵 ∈ On → (∅ ·o 𝐵) = ∅)
66		om0r 8575	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 ∈ On → (∅ ·o 𝑥) = ∅)
67	65, 66	oveqan12d 7449	. . . . . . . . . . . . . . 15 ⊢ ((𝐵 ∈ On ∧ 𝑥 ∈ On) → ((∅ ·o 𝐵) +o (∅ ·o 𝑥)) = (∅ +o ∅))
68		0elon 6439	. . . . . . . . . . . . . . . 16 ⊢ ∅ ∈ On
69		oa0 8552	. . . . . . . . . . . . . . . 16 ⊢ (∅ ∈ On → (∅ +o ∅) = ∅)
70	68, 69	ax-mp 5	. . . . . . . . . . . . . . 15 ⊢ (∅ +o ∅) = ∅
71	67, 70	eqtr2di 2791	. . . . . . . . . . . . . 14 ⊢ ((𝐵 ∈ On ∧ 𝑥 ∈ On) → ∅ = ((∅ ·o 𝐵) +o (∅ ·o 𝑥)))
72	64, 71	eqtrd 2774	. . . . . . . . . . . . 13 ⊢ ((𝐵 ∈ On ∧ 𝑥 ∈ On) → (∅ ·o (𝐵 +o 𝑥)) = ((∅ ·o 𝐵) +o (∅ ·o 𝑥)))
73	61, 72	sylan2 593	. . . . . . . . . . . 12 ⊢ ((𝐵 ∈ On ∧ Lim 𝑥) → (∅ ·o (𝐵 +o 𝑥)) = ((∅ ·o 𝐵) +o (∅ ·o 𝑥)))
74	73	ancoms 458	. . . . . . . . . . 11 ⊢ ((Lim 𝑥 ∧ 𝐵 ∈ On) → (∅ ·o (𝐵 +o 𝑥)) = ((∅ ·o 𝐵) +o (∅ ·o 𝑥)))
75		oveq1 7437	. . . . . . . . . . . 12 ⊢ (𝐴 = ∅ → (𝐴 ·o (𝐵 +o 𝑥)) = (∅ ·o (𝐵 +o 𝑥)))
76		oveq1 7437	. . . . . . . . . . . . 13 ⊢ (𝐴 = ∅ → (𝐴 ·o 𝐵) = (∅ ·o 𝐵))
77		oveq1 7437	. . . . . . . . . . . . 13 ⊢ (𝐴 = ∅ → (𝐴 ·o 𝑥) = (∅ ·o 𝑥))
78	76, 77	oveq12d 7448	. . . . . . . . . . . 12 ⊢ (𝐴 = ∅ → ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) = ((∅ ·o 𝐵) +o (∅ ·o 𝑥)))
79	75, 78	eqeq12d 2750	. . . . . . . . . . 11 ⊢ (𝐴 = ∅ → ((𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) ↔ (∅ ·o (𝐵 +o 𝑥)) = ((∅ ·o 𝐵) +o (∅ ·o 𝑥))))
80	74, 79	imbitrrid 246	. . . . . . . . . 10 ⊢ (𝐴 = ∅ → ((Lim 𝑥 ∧ 𝐵 ∈ On) → (𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥))))
81	80	expd 415	. . . . . . . . 9 ⊢ (𝐴 = ∅ → (Lim 𝑥 → (𝐵 ∈ On → (𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)))))
82	81	com3r 87	. . . . . . . 8 ⊢ (𝐵 ∈ On → (𝐴 = ∅ → (Lim 𝑥 → (𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)))))
83	82	imp 406	. . . . . . 7 ⊢ ((𝐵 ∈ On ∧ 𝐴 = ∅) → (Lim 𝑥 → (𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥))))
84	83	a1dd 50	. . . . . 6 ⊢ ((𝐵 ∈ On ∧ 𝐴 = ∅) → (Lim 𝑥 → (∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → (𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)))))
85		simplr 769	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝑥 ∈ On ∧ 𝐵 ∈ On) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → 𝐵 ∈ On)
86	62	ancoms 458	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑥 ∈ On ∧ 𝐵 ∈ On) → (𝐵 +o 𝑥) ∈ On)
87		onelon 6410	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝐵 +o 𝑥) ∈ On ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → 𝑧 ∈ On)
88	86, 87	sylan 580	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝑥 ∈ On ∧ 𝐵 ∈ On) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → 𝑧 ∈ On)
89		ontri1 6419	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐵 ∈ On ∧ 𝑧 ∈ On) → (𝐵 ⊆ 𝑧 ↔ ¬ 𝑧 ∈ 𝐵))
90		oawordex 8593	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐵 ∈ On ∧ 𝑧 ∈ On) → (𝐵 ⊆ 𝑧 ↔ ∃𝑣 ∈ On (𝐵 +o 𝑣) = 𝑧))
91	89, 90	bitr3d 281	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝐵 ∈ On ∧ 𝑧 ∈ On) → (¬ 𝑧 ∈ 𝐵 ↔ ∃𝑣 ∈ On (𝐵 +o 𝑣) = 𝑧))
92	85, 88, 91	syl2anc 584	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑥 ∈ On ∧ 𝐵 ∈ On) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → (¬ 𝑧 ∈ 𝐵 ↔ ∃𝑣 ∈ On (𝐵 +o 𝑣) = 𝑧))
93		oaord 8583	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((𝑣 ∈ On ∧ 𝑥 ∈ On ∧ 𝐵 ∈ On) → (𝑣 ∈ 𝑥 ↔ (𝐵 +o 𝑣) ∈ (𝐵 +o 𝑥)))
94	93	3expb 1119	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝑣 ∈ On ∧ (𝑥 ∈ On ∧ 𝐵 ∈ On)) → (𝑣 ∈ 𝑥 ↔ (𝐵 +o 𝑣) ∈ (𝐵 +o 𝑥)))
95		eleq1 2826	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝐵 +o 𝑣) = 𝑧 → ((𝐵 +o 𝑣) ∈ (𝐵 +o 𝑥) ↔ 𝑧 ∈ (𝐵 +o 𝑥)))
96	94, 95	sylan9bb 509	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (((𝑣 ∈ On ∧ (𝑥 ∈ On ∧ 𝐵 ∈ On)) ∧ (𝐵 +o 𝑣) = 𝑧) → (𝑣 ∈ 𝑥 ↔ 𝑧 ∈ (𝐵 +o 𝑥)))
97		iba 527	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝐵 +o 𝑣) = 𝑧 → (𝑣 ∈ 𝑥 ↔ (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))
98	97	adantl 481	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (((𝑣 ∈ On ∧ (𝑥 ∈ On ∧ 𝐵 ∈ On)) ∧ (𝐵 +o 𝑣) = 𝑧) → (𝑣 ∈ 𝑥 ↔ (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))
99	96, 98	bitr3d 281	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((𝑣 ∈ On ∧ (𝑥 ∈ On ∧ 𝐵 ∈ On)) ∧ (𝐵 +o 𝑣) = 𝑧) → (𝑧 ∈ (𝐵 +o 𝑥) ↔ (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))
100	99	an32s 652	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝑣 ∈ On ∧ (𝐵 +o 𝑣) = 𝑧) ∧ (𝑥 ∈ On ∧ 𝐵 ∈ On)) → (𝑧 ∈ (𝐵 +o 𝑥) ↔ (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))
101	100	biimpcd 249	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑧 ∈ (𝐵 +o 𝑥) → (((𝑣 ∈ On ∧ (𝐵 +o 𝑣) = 𝑧) ∧ (𝑥 ∈ On ∧ 𝐵 ∈ On)) → (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))
102	101	exp4c 432	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑧 ∈ (𝐵 +o 𝑥) → (𝑣 ∈ On → ((𝐵 +o 𝑣) = 𝑧 → ((𝑥 ∈ On ∧ 𝐵 ∈ On) → (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))))
103	102	com4r 94	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑥 ∈ On ∧ 𝐵 ∈ On) → (𝑧 ∈ (𝐵 +o 𝑥) → (𝑣 ∈ On → ((𝐵 +o 𝑣) = 𝑧 → (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))))
104	103	imp 406	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝑥 ∈ On ∧ 𝐵 ∈ On) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → (𝑣 ∈ On → ((𝐵 +o 𝑣) = 𝑧 → (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧))))
105	104	reximdvai 3162	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑥 ∈ On ∧ 𝐵 ∈ On) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → (∃𝑣 ∈ On (𝐵 +o 𝑣) = 𝑧 → ∃𝑣 ∈ On (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))
106	92, 105	sylbid 240	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑥 ∈ On ∧ 𝐵 ∈ On) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → (¬ 𝑧 ∈ 𝐵 → ∃𝑣 ∈ On (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))
107	106	orrd 863	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ On ∧ 𝐵 ∈ On) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → (𝑧 ∈ 𝐵 ∨ ∃𝑣 ∈ On (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))
108	61, 107	sylanl1 680	. . . . . . . . . . . . . . . 16 ⊢ (((Lim 𝑥 ∧ 𝐵 ∈ On) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → (𝑧 ∈ 𝐵 ∨ ∃𝑣 ∈ On (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))
109	108	adantlrl 720	. . . . . . . . . . . . . . 15 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → (𝑧 ∈ 𝐵 ∨ ∃𝑣 ∈ On (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))
110	109	adantlr 715	. . . . . . . . . . . . . 14 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → (𝑧 ∈ 𝐵 ∨ ∃𝑣 ∈ On (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)))
111		0ellim 6448	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (Lim 𝑥 → ∅ ∈ 𝑥)
112		om00el 8612	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ On) → (∅ ∈ (𝐴 ·o 𝑥) ↔ (∅ ∈ 𝐴 ∧ ∅ ∈ 𝑥)))
113	112	biimprd 248	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ On) → ((∅ ∈ 𝐴 ∧ ∅ ∈ 𝑥) → ∅ ∈ (𝐴 ·o 𝑥)))
114	111, 113	sylan2i 606	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ On) → ((∅ ∈ 𝐴 ∧ Lim 𝑥) → ∅ ∈ (𝐴 ·o 𝑥)))
115	61, 114	sylan2 593	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝐴 ∈ On ∧ Lim 𝑥) → ((∅ ∈ 𝐴 ∧ Lim 𝑥) → ∅ ∈ (𝐴 ·o 𝑥)))
116	115	exp4b 430	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝐴 ∈ On → (Lim 𝑥 → (∅ ∈ 𝐴 → (Lim 𝑥 → ∅ ∈ (𝐴 ·o 𝑥)))))
117	116	com4r 94	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (Lim 𝑥 → (𝐴 ∈ On → (Lim 𝑥 → (∅ ∈ 𝐴 → ∅ ∈ (𝐴 ·o 𝑥)))))
118	117	pm2.43a 54	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (Lim 𝑥 → (𝐴 ∈ On → (∅ ∈ 𝐴 → ∅ ∈ (𝐴 ·o 𝑥))))
119	118	imp31 417	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((Lim 𝑥 ∧ 𝐴 ∈ On) ∧ ∅ ∈ 𝐴) → ∅ ∈ (𝐴 ·o 𝑥))
120	119	a1d 25	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((Lim 𝑥 ∧ 𝐴 ∈ On) ∧ ∅ ∈ 𝐴) → (𝑧 ∈ 𝐵 → ∅ ∈ (𝐴 ·o 𝑥)))
121	120	adantlrr 721	. . . . . . . . . . . . . . . . . . 19 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∅ ∈ 𝐴) → (𝑧 ∈ 𝐵 → ∅ ∈ (𝐴 ·o 𝑥)))
122		omordi 8602	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝐵 ∈ On ∧ 𝐴 ∈ On) ∧ ∅ ∈ 𝐴) → (𝑧 ∈ 𝐵 → (𝐴 ·o 𝑧) ∈ (𝐴 ·o 𝐵)))
123	122	ancom1s 653	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ ∅ ∈ 𝐴) → (𝑧 ∈ 𝐵 → (𝐴 ·o 𝑧) ∈ (𝐴 ·o 𝐵)))
124		onelss 6427	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝐴 ·o 𝐵) ∈ On → ((𝐴 ·o 𝑧) ∈ (𝐴 ·o 𝐵) → (𝐴 ·o 𝑧) ⊆ (𝐴 ·o 𝐵)))
125	22	sseq2d 4027	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝐴 ·o 𝐵) ∈ On → ((𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o ∅) ↔ (𝐴 ·o 𝑧) ⊆ (𝐴 ·o 𝐵)))
126	124, 125	sylibrd 259	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝐴 ·o 𝐵) ∈ On → ((𝐴 ·o 𝑧) ∈ (𝐴 ·o 𝐵) → (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o ∅)))
127	21, 126	syl 17	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((𝐴 ·o 𝑧) ∈ (𝐴 ·o 𝐵) → (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o ∅)))
128	127	adantr 480	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ ∅ ∈ 𝐴) → ((𝐴 ·o 𝑧) ∈ (𝐴 ·o 𝐵) → (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o ∅)))
129	123, 128	syld 47	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ ∅ ∈ 𝐴) → (𝑧 ∈ 𝐵 → (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o ∅)))
130	129	adantll 714	. . . . . . . . . . . . . . . . . . 19 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∅ ∈ 𝐴) → (𝑧 ∈ 𝐵 → (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o ∅)))
131	121, 130	jcad 512	. . . . . . . . . . . . . . . . . 18 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∅ ∈ 𝐴) → (𝑧 ∈ 𝐵 → (∅ ∈ (𝐴 ·o 𝑥) ∧ (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o ∅))))
132		oveq2 7438	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑤 = ∅ → ((𝐴 ·o 𝐵) +o 𝑤) = ((𝐴 ·o 𝐵) +o ∅))
133	132	sseq2d 4027	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑤 = ∅ → ((𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤) ↔ (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o ∅)))
134	133	rspcev 3621	. . . . . . . . . . . . . . . . . 18 ⊢ ((∅ ∈ (𝐴 ·o 𝑥) ∧ (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o ∅)) → ∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤))
135	131, 134	syl6 35	. . . . . . . . . . . . . . . . 17 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∅ ∈ 𝐴) → (𝑧 ∈ 𝐵 → ∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤)))
136	135	adantrr 717	. . . . . . . . . . . . . . . 16 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → (𝑧 ∈ 𝐵 → ∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤)))
137		omordi 8602	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝑥 ∈ On ∧ 𝐴 ∈ On) ∧ ∅ ∈ 𝐴) → (𝑣 ∈ 𝑥 → (𝐴 ·o 𝑣) ∈ (𝐴 ·o 𝑥)))
138	61, 137	sylanl1 680	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((Lim 𝑥 ∧ 𝐴 ∈ On) ∧ ∅ ∈ 𝐴) → (𝑣 ∈ 𝑥 → (𝐴 ·o 𝑣) ∈ (𝐴 ·o 𝑥)))
139	138	adantrd 491	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((Lim 𝑥 ∧ 𝐴 ∈ On) ∧ ∅ ∈ 𝐴) → ((𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧) → (𝐴 ·o 𝑣) ∈ (𝐴 ·o 𝑥)))
140	139	adantrr 717	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((Lim 𝑥 ∧ 𝐴 ∈ On) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → ((𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧) → (𝐴 ·o 𝑣) ∈ (𝐴 ·o 𝑥)))
141		oveq2 7438	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑦 = 𝑣 → (𝐵 +o 𝑦) = (𝐵 +o 𝑣))
142	141	oveq2d 7446	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑦 = 𝑣 → (𝐴 ·o (𝐵 +o 𝑦)) = (𝐴 ·o (𝐵 +o 𝑣)))
143		oveq2 7438	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑦 = 𝑣 → (𝐴 ·o 𝑦) = (𝐴 ·o 𝑣))
144	143	oveq2d 7446	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑦 = 𝑣 → ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)))
145	142, 144	eqeq12d 2750	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑦 = 𝑣 → ((𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) ↔ (𝐴 ·o (𝐵 +o 𝑣)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
146	145	rspccv 3618	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → (𝑣 ∈ 𝑥 → (𝐴 ·o (𝐵 +o 𝑣)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
147		oveq2 7438	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝐵 +o 𝑣) = 𝑧 → (𝐴 ·o (𝐵 +o 𝑣)) = (𝐴 ·o 𝑧))
148		eqeq1 2738	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝐴 ·o (𝐵 +o 𝑣)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)) → ((𝐴 ·o (𝐵 +o 𝑣)) = (𝐴 ·o 𝑧) ↔ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)) = (𝐴 ·o 𝑧)))
149	147, 148	imbitrid 244	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝐴 ·o (𝐵 +o 𝑣)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)) → ((𝐵 +o 𝑣) = 𝑧 → ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)) = (𝐴 ·o 𝑧)))
150		eqimss2 4054	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)) = (𝐴 ·o 𝑧) → (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)))
151	149, 150	syl6 35	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝐴 ·o (𝐵 +o 𝑣)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)) → ((𝐵 +o 𝑣) = 𝑧 → (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
152	151	imim2i 16	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝑣 ∈ 𝑥 → (𝐴 ·o (𝐵 +o 𝑣)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))) → (𝑣 ∈ 𝑥 → ((𝐵 +o 𝑣) = 𝑧 → (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)))))
153	152	impd 410	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝑣 ∈ 𝑥 → (𝐴 ·o (𝐵 +o 𝑣)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))) → ((𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧) → (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
154	146, 153	syl 17	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → ((𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧) → (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
155	154	ad2antll 729	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((Lim 𝑥 ∧ 𝐴 ∈ On) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → ((𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧) → (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
156	140, 155	jcad 512	. . . . . . . . . . . . . . . . . . 19 ⊢ (((Lim 𝑥 ∧ 𝐴 ∈ On) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → ((𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧) → ((𝐴 ·o 𝑣) ∈ (𝐴 ·o 𝑥) ∧ (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)))))
157		oveq2 7438	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑤 = (𝐴 ·o 𝑣) → ((𝐴 ·o 𝐵) +o 𝑤) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)))
158	157	sseq2d 4027	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑤 = (𝐴 ·o 𝑣) → ((𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤) ↔ (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
159	158	rspcev 3621	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝐴 ·o 𝑣) ∈ (𝐴 ·o 𝑥) ∧ (𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))) → ∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤))
160	156, 159	syl6 35	. . . . . . . . . . . . . . . . . 18 ⊢ (((Lim 𝑥 ∧ 𝐴 ∈ On) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → ((𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧) → ∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤)))
161	160	rexlimdvw 3157	. . . . . . . . . . . . . . . . 17 ⊢ (((Lim 𝑥 ∧ 𝐴 ∈ On) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → (∃𝑣 ∈ On (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧) → ∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤)))
162	161	adantlrr 721	. . . . . . . . . . . . . . . 16 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → (∃𝑣 ∈ On (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧) → ∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤)))
163	136, 162	jaod 859	. . . . . . . . . . . . . . 15 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → ((𝑧 ∈ 𝐵 ∨ ∃𝑣 ∈ On (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)) → ∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤)))
164	163	adantr 480	. . . . . . . . . . . . . 14 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → ((𝑧 ∈ 𝐵 ∨ ∃𝑣 ∈ On (𝑣 ∈ 𝑥 ∧ (𝐵 +o 𝑣) = 𝑧)) → ∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤)))
165	110, 164	mpd 15	. . . . . . . . . . . . 13 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) ∧ 𝑧 ∈ (𝐵 +o 𝑥)) → ∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤))
166	165	ralrimiva 3143	. . . . . . . . . . . 12 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → ∀𝑧 ∈ (𝐵 +o 𝑥)∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤))
167		iunss2 5053	. . . . . . . . . . . 12 ⊢ (∀𝑧 ∈ (𝐵 +o 𝑥)∃𝑤 ∈ (𝐴 ·o 𝑥)(𝐴 ·o 𝑧) ⊆ ((𝐴 ·o 𝐵) +o 𝑤) → ∪ 𝑧 ∈ (𝐵 +o 𝑥)(𝐴 ·o 𝑧) ⊆ ∪ 𝑤 ∈ (𝐴 ·o 𝑥)((𝐴 ·o 𝐵) +o 𝑤))
168	166, 167	syl 17	. . . . . . . . . . 11 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → ∪ 𝑧 ∈ (𝐵 +o 𝑥)(𝐴 ·o 𝑧) ⊆ ∪ 𝑤 ∈ (𝐴 ·o 𝑥)((𝐴 ·o 𝐵) +o 𝑤))
169		omordlim 8613	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝐴 ∈ On ∧ (𝑥 ∈ V ∧ Lim 𝑥)) ∧ 𝑤 ∈ (𝐴 ·o 𝑥)) → ∃𝑣 ∈ 𝑥 𝑤 ∈ (𝐴 ·o 𝑣))
170	169	ex 412	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝐴 ∈ On ∧ (𝑥 ∈ V ∧ Lim 𝑥)) → (𝑤 ∈ (𝐴 ·o 𝑥) → ∃𝑣 ∈ 𝑥 𝑤 ∈ (𝐴 ·o 𝑣)))
171	59, 170	mpanr1 703	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐴 ∈ On ∧ Lim 𝑥) → (𝑤 ∈ (𝐴 ·o 𝑥) → ∃𝑣 ∈ 𝑥 𝑤 ∈ (𝐴 ·o 𝑣)))
172	171	ancoms 458	. . . . . . . . . . . . . . . . . 18 ⊢ ((Lim 𝑥 ∧ 𝐴 ∈ On) → (𝑤 ∈ (𝐴 ·o 𝑥) → ∃𝑣 ∈ 𝑥 𝑤 ∈ (𝐴 ·o 𝑣)))
173	172	imp 406	. . . . . . . . . . . . . . . . 17 ⊢ (((Lim 𝑥 ∧ 𝐴 ∈ On) ∧ 𝑤 ∈ (𝐴 ·o 𝑥)) → ∃𝑣 ∈ 𝑥 𝑤 ∈ (𝐴 ·o 𝑣))
174	173	adantlrr 721	. . . . . . . . . . . . . . . 16 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ 𝑤 ∈ (𝐴 ·o 𝑥)) → ∃𝑣 ∈ 𝑥 𝑤 ∈ (𝐴 ·o 𝑣))
175	174	adantlr 715	. . . . . . . . . . . . . . 15 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) ∧ 𝑤 ∈ (𝐴 ·o 𝑥)) → ∃𝑣 ∈ 𝑥 𝑤 ∈ (𝐴 ·o 𝑣))
176		oaordi 8582	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝑥 ∈ On ∧ 𝐵 ∈ On) → (𝑣 ∈ 𝑥 → (𝐵 +o 𝑣) ∈ (𝐵 +o 𝑥)))
177	61, 176	sylan 580	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((Lim 𝑥 ∧ 𝐵 ∈ On) → (𝑣 ∈ 𝑥 → (𝐵 +o 𝑣) ∈ (𝐵 +o 𝑥)))
178	177	imp 406	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((Lim 𝑥 ∧ 𝐵 ∈ On) ∧ 𝑣 ∈ 𝑥) → (𝐵 +o 𝑣) ∈ (𝐵 +o 𝑥))
179	178	adantlrl 720	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ 𝑣 ∈ 𝑥) → (𝐵 +o 𝑣) ∈ (𝐵 +o 𝑥))
180	179	a1d 25	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ 𝑣 ∈ 𝑥) → (𝑤 ∈ (𝐴 ·o 𝑣) → (𝐵 +o 𝑣) ∈ (𝐵 +o 𝑥)))
181	180	adantlr 715	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) ∧ 𝑣 ∈ 𝑥) → (𝑤 ∈ (𝐴 ·o 𝑣) → (𝐵 +o 𝑣) ∈ (𝐵 +o 𝑥)))
182		limord 6445	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (Lim 𝑥 → Ord 𝑥)
183		ordelon 6409	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((Ord 𝑥 ∧ 𝑣 ∈ 𝑥) → 𝑣 ∈ On)
184	182, 183	sylan 580	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((Lim 𝑥 ∧ 𝑣 ∈ 𝑥) → 𝑣 ∈ On)
185		omcl 8572	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝐴 ∈ On ∧ 𝑣 ∈ On) → (𝐴 ·o 𝑣) ∈ On)
186	185	ancoms 458	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝑣 ∈ On ∧ 𝐴 ∈ On) → (𝐴 ·o 𝑣) ∈ On)
187	186	adantrr 717	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝑣 ∈ On ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) → (𝐴 ·o 𝑣) ∈ On)
188	21	adantl 481	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝑣 ∈ On ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) → (𝐴 ·o 𝐵) ∈ On)
189		oaordi 8582	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((𝐴 ·o 𝑣) ∈ On ∧ (𝐴 ·o 𝐵) ∈ On) → (𝑤 ∈ (𝐴 ·o 𝑣) → ((𝐴 ·o 𝐵) +o 𝑤) ∈ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
190	187, 188, 189	syl2anc 584	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝑣 ∈ On ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) → (𝑤 ∈ (𝐴 ·o 𝑣) → ((𝐴 ·o 𝐵) +o 𝑤) ∈ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
191	184, 190	sylan 580	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((Lim 𝑥 ∧ 𝑣 ∈ 𝑥) ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) → (𝑤 ∈ (𝐴 ·o 𝑣) → ((𝐴 ·o 𝐵) +o 𝑤) ∈ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
192	191	an32s 652	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ 𝑣 ∈ 𝑥) → (𝑤 ∈ (𝐴 ·o 𝑣) → ((𝐴 ·o 𝐵) +o 𝑤) ∈ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
193	192	adantlr 715	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) ∧ 𝑣 ∈ 𝑥) → (𝑤 ∈ (𝐴 ·o 𝑣) → ((𝐴 ·o 𝐵) +o 𝑤) ∈ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
194	145	rspccva 3620	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) ∧ 𝑣 ∈ 𝑥) → (𝐴 ·o (𝐵 +o 𝑣)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣)))
195	194	eleq2d 2824	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) ∧ 𝑣 ∈ 𝑥) → (((𝐴 ·o 𝐵) +o 𝑤) ∈ (𝐴 ·o (𝐵 +o 𝑣)) ↔ ((𝐴 ·o 𝐵) +o 𝑤) ∈ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
196	195	adantll 714	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) ∧ 𝑣 ∈ 𝑥) → (((𝐴 ·o 𝐵) +o 𝑤) ∈ (𝐴 ·o (𝐵 +o 𝑣)) ↔ ((𝐴 ·o 𝐵) +o 𝑤) ∈ ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑣))))
197	193, 196	sylibrd 259	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) ∧ 𝑣 ∈ 𝑥) → (𝑤 ∈ (𝐴 ·o 𝑣) → ((𝐴 ·o 𝐵) +o 𝑤) ∈ (𝐴 ·o (𝐵 +o 𝑣))))
198		oacl 8571	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝐵 ∈ On ∧ 𝑣 ∈ On) → (𝐵 +o 𝑣) ∈ On)
199	198	ancoms 458	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝑣 ∈ On ∧ 𝐵 ∈ On) → (𝐵 +o 𝑣) ∈ On)
200		omcl 8572	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝐴 ∈ On ∧ (𝐵 +o 𝑣) ∈ On) → (𝐴 ·o (𝐵 +o 𝑣)) ∈ On)
201	199, 200	sylan2 593	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝐴 ∈ On ∧ (𝑣 ∈ On ∧ 𝐵 ∈ On)) → (𝐴 ·o (𝐵 +o 𝑣)) ∈ On)
202	201	an12s 649	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝑣 ∈ On ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) → (𝐴 ·o (𝐵 +o 𝑣)) ∈ On)
203	184, 202	sylan 580	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((Lim 𝑥 ∧ 𝑣 ∈ 𝑥) ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) → (𝐴 ·o (𝐵 +o 𝑣)) ∈ On)
204	203	an32s 652	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ 𝑣 ∈ 𝑥) → (𝐴 ·o (𝐵 +o 𝑣)) ∈ On)
205		onelss 6427	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝐴 ·o (𝐵 +o 𝑣)) ∈ On → (((𝐴 ·o 𝐵) +o 𝑤) ∈ (𝐴 ·o (𝐵 +o 𝑣)) → ((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o (𝐵 +o 𝑣))))
206	204, 205	syl 17	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ 𝑣 ∈ 𝑥) → (((𝐴 ·o 𝐵) +o 𝑤) ∈ (𝐴 ·o (𝐵 +o 𝑣)) → ((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o (𝐵 +o 𝑣))))
207	206	adantlr 715	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) ∧ 𝑣 ∈ 𝑥) → (((𝐴 ·o 𝐵) +o 𝑤) ∈ (𝐴 ·o (𝐵 +o 𝑣)) → ((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o (𝐵 +o 𝑣))))
208	197, 207	syld 47	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) ∧ 𝑣 ∈ 𝑥) → (𝑤 ∈ (𝐴 ·o 𝑣) → ((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o (𝐵 +o 𝑣))))
209	181, 208	jcad 512	. . . . . . . . . . . . . . . . . 18 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) ∧ 𝑣 ∈ 𝑥) → (𝑤 ∈ (𝐴 ·o 𝑣) → ((𝐵 +o 𝑣) ∈ (𝐵 +o 𝑥) ∧ ((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o (𝐵 +o 𝑣)))))
210		oveq2 7438	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑧 = (𝐵 +o 𝑣) → (𝐴 ·o 𝑧) = (𝐴 ·o (𝐵 +o 𝑣)))
211	210	sseq2d 4027	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑧 = (𝐵 +o 𝑣) → (((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o 𝑧) ↔ ((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o (𝐵 +o 𝑣))))
212	211	rspcev 3621	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝐵 +o 𝑣) ∈ (𝐵 +o 𝑥) ∧ ((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o (𝐵 +o 𝑣))) → ∃𝑧 ∈ (𝐵 +o 𝑥)((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o 𝑧))
213	209, 212	syl6 35	. . . . . . . . . . . . . . . . 17 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) ∧ 𝑣 ∈ 𝑥) → (𝑤 ∈ (𝐴 ·o 𝑣) → ∃𝑧 ∈ (𝐵 +o 𝑥)((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o 𝑧)))
214	213	rexlimdva 3152	. . . . . . . . . . . . . . . 16 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) → (∃𝑣 ∈ 𝑥 𝑤 ∈ (𝐴 ·o 𝑣) → ∃𝑧 ∈ (𝐵 +o 𝑥)((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o 𝑧)))
215	214	adantr 480	. . . . . . . . . . . . . . 15 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) ∧ 𝑤 ∈ (𝐴 ·o 𝑥)) → (∃𝑣 ∈ 𝑥 𝑤 ∈ (𝐴 ·o 𝑣) → ∃𝑧 ∈ (𝐵 +o 𝑥)((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o 𝑧)))
216	175, 215	mpd 15	. . . . . . . . . . . . . 14 ⊢ ((((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) ∧ 𝑤 ∈ (𝐴 ·o 𝑥)) → ∃𝑧 ∈ (𝐵 +o 𝑥)((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o 𝑧))
217	216	ralrimiva 3143	. . . . . . . . . . . . 13 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) → ∀𝑤 ∈ (𝐴 ·o 𝑥)∃𝑧 ∈ (𝐵 +o 𝑥)((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o 𝑧))
218		iunss2 5053	. . . . . . . . . . . . 13 ⊢ (∀𝑤 ∈ (𝐴 ·o 𝑥)∃𝑧 ∈ (𝐵 +o 𝑥)((𝐴 ·o 𝐵) +o 𝑤) ⊆ (𝐴 ·o 𝑧) → ∪ 𝑤 ∈ (𝐴 ·o 𝑥)((𝐴 ·o 𝐵) +o 𝑤) ⊆ ∪ 𝑧 ∈ (𝐵 +o 𝑥)(𝐴 ·o 𝑧))
219	217, 218	syl 17	. . . . . . . . . . . 12 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦))) → ∪ 𝑤 ∈ (𝐴 ·o 𝑥)((𝐴 ·o 𝐵) +o 𝑤) ⊆ ∪ 𝑧 ∈ (𝐵 +o 𝑥)(𝐴 ·o 𝑧))
220	219	adantrl 716	. . . . . . . . . . 11 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → ∪ 𝑤 ∈ (𝐴 ·o 𝑥)((𝐴 ·o 𝐵) +o 𝑤) ⊆ ∪ 𝑧 ∈ (𝐵 +o 𝑥)(𝐴 ·o 𝑧))
221	168, 220	eqssd 4012	. . . . . . . . . 10 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → ∪ 𝑧 ∈ (𝐵 +o 𝑥)(𝐴 ·o 𝑧) = ∪ 𝑤 ∈ (𝐴 ·o 𝑥)((𝐴 ·o 𝐵) +o 𝑤))
222		oalimcl 8596	. . . . . . . . . . . . . . . 16 ⊢ ((𝐵 ∈ On ∧ (𝑥 ∈ V ∧ Lim 𝑥)) → Lim (𝐵 +o 𝑥))
223	59, 222	mpanr1 703	. . . . . . . . . . . . . . 15 ⊢ ((𝐵 ∈ On ∧ Lim 𝑥) → Lim (𝐵 +o 𝑥))
224	223	ancoms 458	. . . . . . . . . . . . . 14 ⊢ ((Lim 𝑥 ∧ 𝐵 ∈ On) → Lim (𝐵 +o 𝑥))
225	224	anim2i 617	. . . . . . . . . . . . 13 ⊢ ((𝐴 ∈ On ∧ (Lim 𝑥 ∧ 𝐵 ∈ On)) → (𝐴 ∈ On ∧ Lim (𝐵 +o 𝑥)))
226	225	an12s 649	. . . . . . . . . . . 12 ⊢ ((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) → (𝐴 ∈ On ∧ Lim (𝐵 +o 𝑥)))
227		ovex 7463	. . . . . . . . . . . . 13 ⊢ (𝐵 +o 𝑥) ∈ V
228		omlim 8569	. . . . . . . . . . . . 13 ⊢ ((𝐴 ∈ On ∧ ((𝐵 +o 𝑥) ∈ V ∧ Lim (𝐵 +o 𝑥))) → (𝐴 ·o (𝐵 +o 𝑥)) = ∪ 𝑧 ∈ (𝐵 +o 𝑥)(𝐴 ·o 𝑧))
229	227, 228	mpanr1 703	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ On ∧ Lim (𝐵 +o 𝑥)) → (𝐴 ·o (𝐵 +o 𝑥)) = ∪ 𝑧 ∈ (𝐵 +o 𝑥)(𝐴 ·o 𝑧))
230	226, 229	syl 17	. . . . . . . . . . 11 ⊢ ((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) → (𝐴 ·o (𝐵 +o 𝑥)) = ∪ 𝑧 ∈ (𝐵 +o 𝑥)(𝐴 ·o 𝑧))
231	230	adantr 480	. . . . . . . . . 10 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → (𝐴 ·o (𝐵 +o 𝑥)) = ∪ 𝑧 ∈ (𝐵 +o 𝑥)(𝐴 ·o 𝑧))
232	21	ad2antlr 727	. . . . . . . . . . . 12 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∅ ∈ 𝐴) → (𝐴 ·o 𝐵) ∈ On)
233	59	jctl 523	. . . . . . . . . . . . . . . 16 ⊢ (Lim 𝑥 → (𝑥 ∈ V ∧ Lim 𝑥))
234	233	anim1ci 616	. . . . . . . . . . . . . . 15 ⊢ ((Lim 𝑥 ∧ 𝐴 ∈ On) → (𝐴 ∈ On ∧ (𝑥 ∈ V ∧ Lim 𝑥)))
235		omlimcl 8614	. . . . . . . . . . . . . . 15 ⊢ (((𝐴 ∈ On ∧ (𝑥 ∈ V ∧ Lim 𝑥)) ∧ ∅ ∈ 𝐴) → Lim (𝐴 ·o 𝑥))
236	234, 235	sylan 580	. . . . . . . . . . . . . 14 ⊢ (((Lim 𝑥 ∧ 𝐴 ∈ On) ∧ ∅ ∈ 𝐴) → Lim (𝐴 ·o 𝑥))
237	236	adantlrr 721	. . . . . . . . . . . . 13 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∅ ∈ 𝐴) → Lim (𝐴 ·o 𝑥))
238		ovex 7463	. . . . . . . . . . . . 13 ⊢ (𝐴 ·o 𝑥) ∈ V
239	237, 238	jctil 519	. . . . . . . . . . . 12 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∅ ∈ 𝐴) → ((𝐴 ·o 𝑥) ∈ V ∧ Lim (𝐴 ·o 𝑥)))
240		oalim 8568	. . . . . . . . . . . 12 ⊢ (((𝐴 ·o 𝐵) ∈ On ∧ ((𝐴 ·o 𝑥) ∈ V ∧ Lim (𝐴 ·o 𝑥))) → ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) = ∪ 𝑤 ∈ (𝐴 ·o 𝑥)((𝐴 ·o 𝐵) +o 𝑤))
241	232, 239, 240	syl2anc 584	. . . . . . . . . . 11 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ ∅ ∈ 𝐴) → ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) = ∪ 𝑤 ∈ (𝐴 ·o 𝑥)((𝐴 ·o 𝐵) +o 𝑤))
242	241	adantrr 717	. . . . . . . . . 10 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)) = ∪ 𝑤 ∈ (𝐴 ·o 𝑥)((𝐴 ·o 𝐵) +o 𝑤))
243	221, 231, 242	3eqtr4d 2784	. . . . . . . . 9 ⊢ (((Lim 𝑥 ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) ∧ (∅ ∈ 𝐴 ∧ ∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)))) → (𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)))
244	243	exp43 436	. . . . . . . 8 ⊢ (Lim 𝑥 → ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (∅ ∈ 𝐴 → (∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → (𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥))))))
245	244	com3l 89	. . . . . . 7 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (∅ ∈ 𝐴 → (Lim 𝑥 → (∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → (𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥))))))
246	245	imp 406	. . . . . 6 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ ∅ ∈ 𝐴) → (Lim 𝑥 → (∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → (𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)))))
247	84, 246	oe0lem 8549	. . . . 5 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (Lim 𝑥 → (∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → (𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)))))
248	247	com12 32	. . . 4 ⊢ (Lim 𝑥 → ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (∀𝑦 ∈ 𝑥 (𝐴 ·o (𝐵 +o 𝑦)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑦)) → (𝐴 ·o (𝐵 +o 𝑥)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝑥)))))
249	5, 10, 15, 20, 30, 58, 248	tfinds3 7885	. . 3 ⊢ (𝐶 ∈ On → ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ·o (𝐵 +o 𝐶)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝐶))))
250	249	expdcom 414	. 2 ⊢ (𝐴 ∈ On → (𝐵 ∈ On → (𝐶 ∈ On → (𝐴 ·o (𝐵 +o 𝐶)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝐶)))))
251	250	3imp 1110	1 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴 ·o (𝐵 +o 𝐶)) = ((𝐴 ·o 𝐵) +o (𝐴 ·o 𝐶)))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 206   ∧ wa 395   ∨ wo 847   ∧ w3a 1086   = wceq 1536   ∈ wcel 2105  ∀wral 3058  ∃wrex 3067  Vcvv 3477   ⊆ wss 3962  ∅c0 4338  ∪ ciun 4995  Ord word 6384  Oncon0 6385  Lim wlim 6386  suc csuc 6387  (class class class)co 7430   +_o coa 8501   ·_o comu 8502

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1791  ax-4 1805  ax-5 1907  ax-6 1964  ax-7 2004  ax-8 2107  ax-9 2115  ax-10 2138  ax-11 2154  ax-12 2174  ax-ext 2705  ax-rep 5284  ax-sep 5301  ax-nul 5311  ax-pr 5437  ax-un 7753

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1539  df-fal 1549  df-ex 1776  df-nf 1780  df-sb 2062  df-mo 2537  df-eu 2566  df-clab 2712  df-cleq 2726  df-clel 2813  df-nfc 2889  df-ne 2938  df-ral 3059  df-rex 3068  df-rmo 3377  df-reu 3378  df-rab 3433  df-v 3479  df-sbc 3791  df-csb 3908  df-dif 3965  df-un 3967  df-in 3969  df-ss 3979  df-pss 3982  df-nul 4339  df-if 4531  df-pw 4606  df-sn 4631  df-pr 4633  df-op 4637  df-uni 4912  df-int 4951  df-iun 4997  df-br 5148  df-opab 5210  df-mpt 5231  df-tr 5265  df-id 5582  df-eprel 5588  df-po 5596  df-so 5597  df-fr 5640  df-we 5642  df-xp 5694  df-rel 5695  df-cnv 5696  df-co 5697  df-dm 5698  df-rn 5699  df-res 5700  df-ima 5701  df-pred 6322  df-ord 6388  df-on 6389  df-lim 6390  df-suc 6391  df-iota 6515  df-fun 6564  df-fn 6565  df-f 6566  df-f1 6567  df-fo 6568  df-f1o 6569  df-fv 6570  df-ov 7433  df-oprab 7434  df-mpo 7435  df-om 7887  df-2nd 8013  df-frecs 8304  df-wrecs 8335  df-recs 8409  df-rdg 8448  df-1o 8504  df-oadd 8508  df-omul 8509

This theorem is referenced by:  omass  8616  oeeui  8638  oaabs2  8685  oaabsb  43283  naddwordnexlem4  43390