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Theorem cfsmolem 10339

Description: Lemma for cfsmo 10340. (Contributed by Mario Carneiro, 28-Feb-2013.)

**Hypotheses**
Ref	Expression
cfsmolem.2	⊢ 𝐹 = (𝑧 ∈ V ↦ ((𝑔‘dom 𝑧) ∪ ∪ 𝑡 ∈ dom 𝑧 suc (𝑧‘𝑡)))
cfsmolem.3	⊢ 𝐺 = (recs(𝐹) ↾ (cf‘𝐴))

**Assertion**
Ref	Expression
cfsmolem	⊢ (𝐴 ∈ On → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓‘𝑤)))

Distinct variable groups: 𝑓,𝑔,𝑡,𝑤,𝑧,𝐴 𝑓,𝐹,𝑡,𝑧 𝑓,𝐺,𝑤,𝑧 Allowed substitution hints: 𝐹(𝑤,𝑔) 𝐺(𝑡,𝑔)

Proof of Theorem cfsmolem Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		cff1 10327	. 2 ⊢ (𝐴 ∈ On → ∃𝑔(𝑔:(cf‘𝐴)–1-1→𝐴 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔‘𝑤)))
2		cfon 10324	. . . . . . . . . . . 12 ⊢ (cf‘𝐴) ∈ On
3	2	oneli 6509	. . . . . . . . . . 11 ⊢ (𝑥 ∈ (cf‘𝐴) → 𝑥 ∈ On)
4	3	3ad2ant3 1135	. . . . . . . . . 10 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → 𝑥 ∈ On)
5		eleq1w 2827	. . . . . . . . . . . . 13 ⊢ (𝑥 = 𝑦 → (𝑥 ∈ (cf‘𝐴) ↔ 𝑦 ∈ (cf‘𝐴)))
6	5	3anbi3d 1442	. . . . . . . . . . . 12 ⊢ (𝑥 = 𝑦 → ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ↔ (𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴))))
7		fveq2 6920	. . . . . . . . . . . . 13 ⊢ (𝑥 = 𝑦 → (𝐺‘𝑥) = (𝐺‘𝑦))
8	7	eleq1d 2829	. . . . . . . . . . . 12 ⊢ (𝑥 = 𝑦 → ((𝐺‘𝑥) ∈ 𝐴 ↔ (𝐺‘𝑦) ∈ 𝐴))
9	6, 8	imbi12d 344	. . . . . . . . . . 11 ⊢ (𝑥 = 𝑦 → (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺‘𝑥) ∈ 𝐴) ↔ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺‘𝑦) ∈ 𝐴)))
10		simpl1 1191	. . . . . . . . . . . . . . 15 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦 ∈ 𝑥) → 𝑔:(cf‘𝐴)–1-1→𝐴)
11		simpl2 1192	. . . . . . . . . . . . . . 15 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦 ∈ 𝑥) → 𝐴 ∈ On)
12		ontr1 6441	. . . . . . . . . . . . . . . . . 18 ⊢ ((cf‘𝐴) ∈ On → ((𝑦 ∈ 𝑥 ∧ 𝑥 ∈ (cf‘𝐴)) → 𝑦 ∈ (cf‘𝐴)))
13	2, 12	ax-mp 5	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑦 ∈ 𝑥 ∧ 𝑥 ∈ (cf‘𝐴)) → 𝑦 ∈ (cf‘𝐴))
14	13	ancoms 458	. . . . . . . . . . . . . . . 16 ⊢ ((𝑥 ∈ (cf‘𝐴) ∧ 𝑦 ∈ 𝑥) → 𝑦 ∈ (cf‘𝐴))
15	14	3ad2antl3 1187	. . . . . . . . . . . . . . 15 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦 ∈ 𝑥) → 𝑦 ∈ (cf‘𝐴))
16		pm2.27 42	. . . . . . . . . . . . . . 15 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺‘𝑦) ∈ 𝐴) → (𝐺‘𝑦) ∈ 𝐴))
17	10, 11, 15, 16	syl3anc 1371	. . . . . . . . . . . . . 14 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦 ∈ 𝑥) → (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺‘𝑦) ∈ 𝐴) → (𝐺‘𝑦) ∈ 𝐴))
18	17	ralimdva 3173	. . . . . . . . . . . . 13 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦 ∈ 𝑥 ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺‘𝑦) ∈ 𝐴) → ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴))
19		cfsmolem.3	. . . . . . . . . . . . . . . . . . . 20 ⊢ 𝐺 = (recs(𝐹) ↾ (cf‘𝐴))
20	19	fveq1i 6921	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝐺‘𝑥) = ((recs(𝐹) ↾ (cf‘𝐴))‘𝑥)
21		fvres 6939	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥 ∈ (cf‘𝐴) → ((recs(𝐹) ↾ (cf‘𝐴))‘𝑥) = (recs(𝐹)‘𝑥))
22	20, 21	eqtrid 2792	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 ∈ (cf‘𝐴) → (𝐺‘𝑥) = (recs(𝐹)‘𝑥))
23		recsval 8460	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑥 ∈ On → (recs(𝐹)‘𝑥) = (𝐹‘(recs(𝐹) ↾ 𝑥)))
24		recsfnon 8459	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ recs(𝐹) Fn On
25		fnfun 6679	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (recs(𝐹) Fn On → Fun recs(𝐹))
26	24, 25	ax-mp 5	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ Fun recs(𝐹)
27		vex 3492	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ 𝑥 ∈ V
28		resfunexg 7252	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((Fun recs(𝐹) ∧ 𝑥 ∈ V) → (recs(𝐹) ↾ 𝑥) ∈ V)
29	26, 27, 28	mp2an 691	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (recs(𝐹) ↾ 𝑥) ∈ V
30		dmeq 5928	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑧 = (recs(𝐹) ↾ 𝑥) → dom 𝑧 = dom (recs(𝐹) ↾ 𝑥))
31	30	fveq2d 6924	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑧 = (recs(𝐹) ↾ 𝑥) → (𝑔‘dom 𝑧) = (𝑔‘dom (recs(𝐹) ↾ 𝑥)))
32		fveq1 6919	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑧 = (recs(𝐹) ↾ 𝑥) → (𝑧‘𝑡) = ((recs(𝐹) ↾ 𝑥)‘𝑡))
33		suceq 6461	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝑧‘𝑡) = ((recs(𝐹) ↾ 𝑥)‘𝑡) → suc (𝑧‘𝑡) = suc ((recs(𝐹) ↾ 𝑥)‘𝑡))
34	32, 33	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑧 = (recs(𝐹) ↾ 𝑥) → suc (𝑧‘𝑡) = suc ((recs(𝐹) ↾ 𝑥)‘𝑡))
35	30, 34	iuneq12d 5044	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑧 = (recs(𝐹) ↾ 𝑥) → ∪ 𝑡 ∈ dom 𝑧 suc (𝑧‘𝑡) = ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡))
36	31, 35	uneq12d 4192	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑧 = (recs(𝐹) ↾ 𝑥) → ((𝑔‘dom 𝑧) ∪ ∪ 𝑡 ∈ dom 𝑧 suc (𝑧‘𝑡)) = ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡)))
37		cfsmolem.2	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ 𝐹 = (𝑧 ∈ V ↦ ((𝑔‘dom 𝑧) ∪ ∪ 𝑡 ∈ dom 𝑧 suc (𝑧‘𝑡)))
38		fvex 6933	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∈ V
39	29	dmex 7949	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ dom (recs(𝐹) ↾ 𝑥) ∈ V
40		fvex 6933	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((recs(𝐹) ↾ 𝑥)‘𝑡) ∈ V
41	40	sucex 7842	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ suc ((recs(𝐹) ↾ 𝑥)‘𝑡) ∈ V
42	39, 41	iunex 8009	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡) ∈ V
43	38, 42	unex 7779	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡)) ∈ V
44	36, 37, 43	fvmpt 7029	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((recs(𝐹) ↾ 𝑥) ∈ V → (𝐹‘(recs(𝐹) ↾ 𝑥)) = ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡)))
45	29, 44	ax-mp 5	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝐹‘(recs(𝐹) ↾ 𝑥)) = ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡))
46	23, 45	eqtrdi 2796	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑥 ∈ On → (recs(𝐹)‘𝑥) = ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡)))
47		onss 7820	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑥 ∈ On → 𝑥 ⊆ On)
48		fnssres 6703	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((recs(𝐹) Fn On ∧ 𝑥 ⊆ On) → (recs(𝐹) ↾ 𝑥) Fn 𝑥)
49	24, 47, 48	sylancr 586	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑥 ∈ On → (recs(𝐹) ↾ 𝑥) Fn 𝑥)
50		fndm 6682	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((recs(𝐹) ↾ 𝑥) Fn 𝑥 → dom (recs(𝐹) ↾ 𝑥) = 𝑥)
51		fveq2 6920	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (dom (recs(𝐹) ↾ 𝑥) = 𝑥 → (𝑔‘dom (recs(𝐹) ↾ 𝑥)) = (𝑔‘𝑥))
52		iuneq1 5031	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (dom (recs(𝐹) ↾ 𝑥) = 𝑥 → ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = ∪ 𝑡 ∈ 𝑥 suc ((recs(𝐹) ↾ 𝑥)‘𝑡))
53		fvres 6939	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑡 ∈ 𝑥 → ((recs(𝐹) ↾ 𝑥)‘𝑡) = (recs(𝐹)‘𝑡))
54		suceq 6461	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (((recs(𝐹) ↾ 𝑥)‘𝑡) = (recs(𝐹)‘𝑡) → suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = suc (recs(𝐹)‘𝑡))
55	53, 54	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑡 ∈ 𝑥 → suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = suc (recs(𝐹)‘𝑡))
56	55	iuneq2i 5036	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ∪ 𝑡 ∈ 𝑥 suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = ∪ 𝑡 ∈ 𝑥 suc (recs(𝐹)‘𝑡)
57		fveq2 6920	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑦 = 𝑡 → (recs(𝐹)‘𝑦) = (recs(𝐹)‘𝑡))
58		suceq 6461	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((recs(𝐹)‘𝑦) = (recs(𝐹)‘𝑡) → suc (recs(𝐹)‘𝑦) = suc (recs(𝐹)‘𝑡))
59	57, 58	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑦 = 𝑡 → suc (recs(𝐹)‘𝑦) = suc (recs(𝐹)‘𝑡))
60	59	cbviunv 5063	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = ∪ 𝑡 ∈ 𝑥 suc (recs(𝐹)‘𝑡)
61	56, 60	eqtr4i 2771	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ∪ 𝑡 ∈ 𝑥 suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)
62	52, 61	eqtrdi 2796	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (dom (recs(𝐹) ↾ 𝑥) = 𝑥 → ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦))
63	51, 62	uneq12d 4192	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (dom (recs(𝐹) ↾ 𝑥) = 𝑥 → ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡)) = ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
64	49, 50, 63	3syl 18	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑥 ∈ On → ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡)) = ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
65	46, 64	eqtrd 2780	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥 ∈ On → (recs(𝐹)‘𝑥) = ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
66	3, 65	syl 17	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 ∈ (cf‘𝐴) → (recs(𝐹)‘𝑥) = ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
67	22, 66	eqtrd 2780	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 ∈ (cf‘𝐴) → (𝐺‘𝑥) = ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
68	67	3ad2ant2 1134	. . . . . . . . . . . . . . . 16 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → (𝐺‘𝑥) = ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
69		eloni 6405	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝐴 ∈ On → Ord 𝐴)
70	69	adantl 481	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) → Ord 𝐴)
71	70	3ad2ant1 1133	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → Ord 𝐴)
72		f1f 6817	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑔:(cf‘𝐴)–1-1→𝐴 → 𝑔:(cf‘𝐴)⟶𝐴)
73	72	ffvelcdmda 7118	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝑥 ∈ (cf‘𝐴)) → (𝑔‘𝑥) ∈ 𝐴)
74	73	adantlr 714	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴)) → (𝑔‘𝑥) ∈ 𝐴)
75	74	3adant3 1132	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → (𝑔‘𝑥) ∈ 𝐴)
76	19	fveq1i 6921	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝐺‘𝑦) = ((recs(𝐹) ↾ (cf‘𝐴))‘𝑦)
77	13	fvresd 6940	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝑦 ∈ 𝑥 ∧ 𝑥 ∈ (cf‘𝐴)) → ((recs(𝐹) ↾ (cf‘𝐴))‘𝑦) = (recs(𝐹)‘𝑦))
78	76, 77	eqtrid 2792	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝑦 ∈ 𝑥 ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺‘𝑦) = (recs(𝐹)‘𝑦))
79	78	adantrl 715	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝑦 ∈ 𝑥 ∧ (𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴))) → (𝐺‘𝑦) = (recs(𝐹)‘𝑦))
80	79	ancoms 458	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦 ∈ 𝑥) → (𝐺‘𝑦) = (recs(𝐹)‘𝑦))
81	80	eleq1d 2829	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦 ∈ 𝑥) → ((𝐺‘𝑦) ∈ 𝐴 ↔ (recs(𝐹)‘𝑦) ∈ 𝐴))
82		ordsucss 7854	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (Ord 𝐴 → ((recs(𝐹)‘𝑦) ∈ 𝐴 → suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
83	69, 82	syl 17	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝐴 ∈ On → ((recs(𝐹)‘𝑦) ∈ 𝐴 → suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
84	83	ad2antrr 725	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦 ∈ 𝑥) → ((recs(𝐹)‘𝑦) ∈ 𝐴 → suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
85	81, 84	sylbid 240	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦 ∈ 𝑥) → ((𝐺‘𝑦) ∈ 𝐴 → suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
86	85	ralimdva 3173	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴 → ∀𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
87		iunss 5068	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴 ↔ ∀𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴)
88	86, 87	imbitrrdi 252	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴 → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
89	88	3impia 1117	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴)
90		onelon 6420	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((𝐴 ∈ On ∧ (recs(𝐹)‘𝑦) ∈ 𝐴) → (recs(𝐹)‘𝑦) ∈ On)
91	90	ex 412	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝐴 ∈ On → ((recs(𝐹)‘𝑦) ∈ 𝐴 → (recs(𝐹)‘𝑦) ∈ On))
92	91	ad2antrr 725	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦 ∈ 𝑥) → ((recs(𝐹)‘𝑦) ∈ 𝐴 → (recs(𝐹)‘𝑦) ∈ On))
93	81, 92	sylbid 240	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦 ∈ 𝑥) → ((𝐺‘𝑦) ∈ 𝐴 → (recs(𝐹)‘𝑦) ∈ On))
94		onsuc 7847	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((recs(𝐹)‘𝑦) ∈ On → suc (recs(𝐹)‘𝑦) ∈ On)
95	93, 94	syl6 35	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦 ∈ 𝑥) → ((𝐺‘𝑦) ∈ 𝐴 → suc (recs(𝐹)‘𝑦) ∈ On))
96	95	ralimdva 3173	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴 → ∀𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ On))
97	96	3impia 1117	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → ∀𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ On)
98		iunon 8395	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝑥 ∈ V ∧ ∀𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ On) → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ On)
99	27, 97, 98	sylancr 586	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ On)
100		simp1 1136	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → 𝐴 ∈ On)
101		onsseleq 6436	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ On ∧ 𝐴 ∈ On) → (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴 ↔ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴 ∨ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴)))
102	99, 100, 101	syl2anc 583	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴 ↔ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴 ∨ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴)))
103		idd 24	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴 → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴))
104		simpll 766	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) ∧ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On)) → 𝑥 ∈ (cf‘𝐴))
105		simprr 772	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) ∧ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On)) → 𝐴 ∈ On)
106	3	ad2antrr 725	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) ∧ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On)) → 𝑥 ∈ On)
107	3, 49	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ⊢ (𝑥 ∈ (cf‘𝐴) → (recs(𝐹) ↾ 𝑥) Fn 𝑥)
108	107	adantr 480	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → (recs(𝐹) ↾ 𝑥) Fn 𝑥)
109	78	ancoms 458	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ⊢ ((𝑥 ∈ (cf‘𝐴) ∧ 𝑦 ∈ 𝑥) → (𝐺‘𝑦) = (recs(𝐹)‘𝑦))
110		fvres 6939	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ⊢ (𝑦 ∈ 𝑥 → ((recs(𝐹) ↾ 𝑥)‘𝑦) = (recs(𝐹)‘𝑦))
111	110	adantl 481	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ⊢ ((𝑥 ∈ (cf‘𝐴) ∧ 𝑦 ∈ 𝑥) → ((recs(𝐹) ↾ 𝑥)‘𝑦) = (recs(𝐹)‘𝑦))
112	109, 111	eqtr4d 2783	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ⊢ ((𝑥 ∈ (cf‘𝐴) ∧ 𝑦 ∈ 𝑥) → (𝐺‘𝑦) = ((recs(𝐹) ↾ 𝑥)‘𝑦))
113	112	eleq1d 2829	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ⊢ ((𝑥 ∈ (cf‘𝐴) ∧ 𝑦 ∈ 𝑥) → ((𝐺‘𝑦) ∈ 𝐴 ↔ ((recs(𝐹) ↾ 𝑥)‘𝑦) ∈ 𝐴))
114	113	ralbidva 3182	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ⊢ (𝑥 ∈ (cf‘𝐴) → (∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴 ↔ ∀𝑦 ∈ 𝑥 ((recs(𝐹) ↾ 𝑥)‘𝑦) ∈ 𝐴))
115	114	biimpa 476	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → ∀𝑦 ∈ 𝑥 ((recs(𝐹) ↾ 𝑥)‘𝑦) ∈ 𝐴)
116		ffnfv 7153	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ ((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ↔ ((recs(𝐹) ↾ 𝑥) Fn 𝑥 ∧ ∀𝑦 ∈ 𝑥 ((recs(𝐹) ↾ 𝑥)‘𝑦) ∈ 𝐴))
117	108, 115, 116	sylanbrc 582	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → (recs(𝐹) ↾ 𝑥):𝑥⟶𝐴)
118		eleq2 2833	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ⊢ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 → (𝑡 ∈ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ↔ 𝑡 ∈ 𝐴))
119	118	biimpar 477	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ⊢ ((∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝑡 ∈ 𝐴) → 𝑡 ∈ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦))
120	119	adantrl 715	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ⊢ ((∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ (𝐴 ∈ On ∧ 𝑡 ∈ 𝐴)) → 𝑡 ∈ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦))
121	120	3adant1 1130	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ⊢ (((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ (𝐴 ∈ On ∧ 𝑡 ∈ 𝐴)) → 𝑡 ∈ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦))
122		onelon 6420	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 ⊢ ((𝐴 ∈ On ∧ 𝑡 ∈ 𝐴) → 𝑡 ∈ On)
123	110	adantl 481	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 ⊢ (((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ 𝑦 ∈ 𝑥) → ((recs(𝐹) ↾ 𝑥)‘𝑦) = (recs(𝐹)‘𝑦))
124		ffvelcdm 7115	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 ⊢ (((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ 𝑦 ∈ 𝑥) → ((recs(𝐹) ↾ 𝑥)‘𝑦) ∈ 𝐴)
125	123, 124	eqeltrrd 2845	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 ⊢ (((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ 𝑦 ∈ 𝑥) → (recs(𝐹)‘𝑦) ∈ 𝐴)
126	125, 90	sylan2 592	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 ⊢ ((𝐴 ∈ On ∧ ((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ 𝑦 ∈ 𝑥)) → (recs(𝐹)‘𝑦) ∈ On)
127	126	adantlr 714	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 ⊢ (((𝐴 ∈ On ∧ 𝑡 ∈ 𝐴) ∧ ((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ 𝑦 ∈ 𝑥)) → (recs(𝐹)‘𝑦) ∈ On)
128		onsssuc 6485	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 ⊢ ((𝑡 ∈ On ∧ (recs(𝐹)‘𝑦) ∈ On) → (𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 ∈ suc (recs(𝐹)‘𝑦)))
129	122, 127, 128	syl2an2r 684	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 ⊢ (((𝐴 ∈ On ∧ 𝑡 ∈ 𝐴) ∧ ((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ 𝑦 ∈ 𝑥)) → (𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 ∈ suc (recs(𝐹)‘𝑦)))
130	129	anassrs 467	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ⊢ ((((𝐴 ∈ On ∧ 𝑡 ∈ 𝐴) ∧ (recs(𝐹) ↾ 𝑥):𝑥⟶𝐴) ∧ 𝑦 ∈ 𝑥) → (𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 ∈ suc (recs(𝐹)‘𝑦)))
131	130	rexbidva 3183	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ⊢ (((𝐴 ∈ On ∧ 𝑡 ∈ 𝐴) ∧ (recs(𝐹) ↾ 𝑥):𝑥⟶𝐴) → (∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ ∃𝑦 ∈ 𝑥 𝑡 ∈ suc (recs(𝐹)‘𝑦)))
132		eliun 5019	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ⊢ (𝑡 ∈ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ↔ ∃𝑦 ∈ 𝑥 𝑡 ∈ suc (recs(𝐹)‘𝑦))
133	131, 132	bitr4di 289	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ⊢ (((𝐴 ∈ On ∧ 𝑡 ∈ 𝐴) ∧ (recs(𝐹) ↾ 𝑥):𝑥⟶𝐴) → (∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 ∈ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
134	133	ancoms 458	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ⊢ (((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ (𝐴 ∈ On ∧ 𝑡 ∈ 𝐴)) → (∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 ∈ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
135	134	3adant2 1131	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ⊢ (((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ (𝐴 ∈ On ∧ 𝑡 ∈ 𝐴)) → (∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 ∈ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
136	121, 135	mpbird 257	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ⊢ (((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ (𝐴 ∈ On ∧ 𝑡 ∈ 𝐴)) → ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
137	136	3expa 1118	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ⊢ ((((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴) ∧ (𝐴 ∈ On ∧ 𝑡 ∈ 𝐴)) → ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
138	137	anassrs 467	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ⊢ (((((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴) ∧ 𝐴 ∈ On) ∧ 𝑡 ∈ 𝐴) → ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
139	138	ralrimiva 3152	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ⊢ ((((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴) ∧ 𝐴 ∈ On) → ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
140	139	expl 457	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ⊢ ((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 → ((∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On) → ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦)))
141	117, 140	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → ((∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On) → ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦)))
142	141	imp 406	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) ∧ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On)) → ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
143		feq1 6728	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ⊢ (𝑓 = (recs(𝐹) ↾ 𝑥) → (𝑓:𝑥⟶𝐴 ↔ (recs(𝐹) ↾ 𝑥):𝑥⟶𝐴))
144		fveq1 6919	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ⊢ (𝑓 = (recs(𝐹) ↾ 𝑥) → (𝑓‘𝑦) = ((recs(𝐹) ↾ 𝑥)‘𝑦))
145	144	sseq2d 4041	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ⊢ (𝑓 = (recs(𝐹) ↾ 𝑥) → (𝑡 ⊆ (𝑓‘𝑦) ↔ 𝑡 ⊆ ((recs(𝐹) ↾ 𝑥)‘𝑦)))
146	145	rexbidv 3185	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ⊢ (𝑓 = (recs(𝐹) ↾ 𝑥) → (∃𝑦 ∈ 𝑥 𝑡 ⊆ (𝑓‘𝑦) ↔ ∃𝑦 ∈ 𝑥 𝑡 ⊆ ((recs(𝐹) ↾ 𝑥)‘𝑦)))
147	110	sseq2d 4041	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ⊢ (𝑦 ∈ 𝑥 → (𝑡 ⊆ ((recs(𝐹) ↾ 𝑥)‘𝑦) ↔ 𝑡 ⊆ (recs(𝐹)‘𝑦)))
148	147	rexbiia 3098	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ⊢ (∃𝑦 ∈ 𝑥 𝑡 ⊆ ((recs(𝐹) ↾ 𝑥)‘𝑦) ↔ ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
149	146, 148	bitrdi 287	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ⊢ (𝑓 = (recs(𝐹) ↾ 𝑥) → (∃𝑦 ∈ 𝑥 𝑡 ⊆ (𝑓‘𝑦) ↔ ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦)))
150	149	ralbidv 3184	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ⊢ (𝑓 = (recs(𝐹) ↾ 𝑥) → (∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (𝑓‘𝑦) ↔ ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦)))
151	143, 150	anbi12d 631	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ (𝑓 = (recs(𝐹) ↾ 𝑥) → ((𝑓:𝑥⟶𝐴 ∧ ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (𝑓‘𝑦)) ↔ ((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))))
152	29, 151	spcev 3619	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (((recs(𝐹) ↾ 𝑥):𝑥⟶𝐴 ∧ ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦)) → ∃𝑓(𝑓:𝑥⟶𝐴 ∧ ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (𝑓‘𝑦)))
153	117, 142, 152	syl2an2r 684	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) ∧ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On)) → ∃𝑓(𝑓:𝑥⟶𝐴 ∧ ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (𝑓‘𝑦)))
154		cfflb 10328	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ On) → (∃𝑓(𝑓:𝑥⟶𝐴 ∧ ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (𝑓‘𝑦)) → (cf‘𝐴) ⊆ 𝑥))
155	154	imp 406	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (((𝐴 ∈ On ∧ 𝑥 ∈ On) ∧ ∃𝑓(𝑓:𝑥⟶𝐴 ∧ ∀𝑡 ∈ 𝐴 ∃𝑦 ∈ 𝑥 𝑡 ⊆ (𝑓‘𝑦))) → (cf‘𝐴) ⊆ 𝑥)
156	105, 106, 153, 155	syl21anc 837	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) ∧ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On)) → (cf‘𝐴) ⊆ 𝑥)
157		ontri1 6429	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (((cf‘𝐴) ∈ On ∧ 𝑥 ∈ On) → ((cf‘𝐴) ⊆ 𝑥 ↔ ¬ 𝑥 ∈ (cf‘𝐴)))
158	2, 3, 157	sylancr 586	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (𝑥 ∈ (cf‘𝐴) → ((cf‘𝐴) ⊆ 𝑥 ↔ ¬ 𝑥 ∈ (cf‘𝐴)))
159	158	ad2antrr 725	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) ∧ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On)) → ((cf‘𝐴) ⊆ 𝑥 ↔ ¬ 𝑥 ∈ (cf‘𝐴)))
160	156, 159	mpbid 232	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) ∧ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On)) → ¬ 𝑥 ∈ (cf‘𝐴))
161	104, 160	pm2.21dd 195	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) ∧ (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On)) → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴)
162	161	ex 412	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → ((∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ 𝐴 ∈ On) → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴))
163	162	expcomd 416	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → (𝐴 ∈ On → (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴)))
164	163	com12 32	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝐴 ∈ On → ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴)))
165	164	3impib 1116	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴))
166	103, 165	jaod 858	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → ((∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴 ∨ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) = 𝐴) → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴))
167	102, 166	sylbid 240	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → (∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴 → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴))
168	89, 167	mpd 15	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴)
169	168	3adant1l 1176	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴)
170		ordunel 7863	. . . . . . . . . . . . . . . . 17 ⊢ ((Ord 𝐴 ∧ (𝑔‘𝑥) ∈ 𝐴 ∧ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴) → ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)) ∈ 𝐴)
171	71, 75, 169, 170	syl3anc 1371	. . . . . . . . . . . . . . . 16 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)) ∈ 𝐴)
172	68, 171	eqeltrd 2844	. . . . . . . . . . . . . . 15 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴) → (𝐺‘𝑥) ∈ 𝐴)
173	172	3expia 1121	. . . . . . . . . . . . . 14 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴 → (𝐺‘𝑥) ∈ 𝐴))
174	173	3impa 1110	. . . . . . . . . . . . 13 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ 𝐴 → (𝐺‘𝑥) ∈ 𝐴))
175	18, 174	syldc 48	. . . . . . . . . . . 12 ⊢ (∀𝑦 ∈ 𝑥 ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺‘𝑦) ∈ 𝐴) → ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺‘𝑥) ∈ 𝐴))
176	175	a1i 11	. . . . . . . . . . 11 ⊢ (𝑥 ∈ On → (∀𝑦 ∈ 𝑥 ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺‘𝑦) ∈ 𝐴) → ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺‘𝑥) ∈ 𝐴)))
177	9, 176	tfis2 7894	. . . . . . . . . 10 ⊢ (𝑥 ∈ On → ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺‘𝑥) ∈ 𝐴))
178	4, 177	mpcom 38	. . . . . . . . 9 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺‘𝑥) ∈ 𝐴)
179	178	3expia 1121	. . . . . . . 8 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) → (𝑥 ∈ (cf‘𝐴) → (𝐺‘𝑥) ∈ 𝐴))
180	179	ralrimiv 3151	. . . . . . 7 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) → ∀𝑥 ∈ (cf‘𝐴)(𝐺‘𝑥) ∈ 𝐴)
181	2	onssi 7874	. . . . . . . . 9 ⊢ (cf‘𝐴) ⊆ On
182		fnssres 6703	. . . . . . . . . 10 ⊢ ((recs(𝐹) Fn On ∧ (cf‘𝐴) ⊆ On) → (recs(𝐹) ↾ (cf‘𝐴)) Fn (cf‘𝐴))
183	19	fneq1i 6676	. . . . . . . . . 10 ⊢ (𝐺 Fn (cf‘𝐴) ↔ (recs(𝐹) ↾ (cf‘𝐴)) Fn (cf‘𝐴))
184	182, 183	sylibr 234	. . . . . . . . 9 ⊢ ((recs(𝐹) Fn On ∧ (cf‘𝐴) ⊆ On) → 𝐺 Fn (cf‘𝐴))
185	24, 181, 184	mp2an 691	. . . . . . . 8 ⊢ 𝐺 Fn (cf‘𝐴)
186		ffnfv 7153	. . . . . . . 8 ⊢ (𝐺:(cf‘𝐴)⟶𝐴 ↔ (𝐺 Fn (cf‘𝐴) ∧ ∀𝑥 ∈ (cf‘𝐴)(𝐺‘𝑥) ∈ 𝐴))
187	185, 186	mpbiran 708	. . . . . . 7 ⊢ (𝐺:(cf‘𝐴)⟶𝐴 ↔ ∀𝑥 ∈ (cf‘𝐴)(𝐺‘𝑥) ∈ 𝐴)
188	180, 187	sylibr 234	. . . . . 6 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) → 𝐺:(cf‘𝐴)⟶𝐴)
189	188	adantlr 714	. . . . 5 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔‘𝑤)) ∧ 𝐴 ∈ On) → 𝐺:(cf‘𝐴)⟶𝐴)
190		onss 7820	. . . . . . . 8 ⊢ (𝐴 ∈ On → 𝐴 ⊆ On)
191	190	adantl 481	. . . . . . 7 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) → 𝐴 ⊆ On)
192	2	onordi 6506	. . . . . . . 8 ⊢ Ord (cf‘𝐴)
193		fvex 6933	. . . . . . . . . . . . . . . . 17 ⊢ (recs(𝐹)‘𝑦) ∈ V
194	193	sucid 6477	. . . . . . . . . . . . . . . 16 ⊢ (recs(𝐹)‘𝑦) ∈ suc (recs(𝐹)‘𝑦)
195		fveq2 6920	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑡 = 𝑦 → (recs(𝐹)‘𝑡) = (recs(𝐹)‘𝑦))
196		suceq 6461	. . . . . . . . . . . . . . . . . . 19 ⊢ ((recs(𝐹)‘𝑡) = (recs(𝐹)‘𝑦) → suc (recs(𝐹)‘𝑡) = suc (recs(𝐹)‘𝑦))
197	195, 196	syl 17	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑡 = 𝑦 → suc (recs(𝐹)‘𝑡) = suc (recs(𝐹)‘𝑦))
198	197	eliuni 5021	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑦 ∈ 𝑥 ∧ (recs(𝐹)‘𝑦) ∈ suc (recs(𝐹)‘𝑦)) → (recs(𝐹)‘𝑦) ∈ ∪ 𝑡 ∈ 𝑥 suc (recs(𝐹)‘𝑡))
199	198, 60	eleqtrrdi 2855	. . . . . . . . . . . . . . . 16 ⊢ ((𝑦 ∈ 𝑥 ∧ (recs(𝐹)‘𝑦) ∈ suc (recs(𝐹)‘𝑦)) → (recs(𝐹)‘𝑦) ∈ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦))
200	194, 199	mpan2 690	. . . . . . . . . . . . . . 15 ⊢ (𝑦 ∈ 𝑥 → (recs(𝐹)‘𝑦) ∈ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦))
201		elun2 4206	. . . . . . . . . . . . . . 15 ⊢ ((recs(𝐹)‘𝑦) ∈ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦) → (recs(𝐹)‘𝑦) ∈ ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
202	200, 201	syl 17	. . . . . . . . . . . . . 14 ⊢ (𝑦 ∈ 𝑥 → (recs(𝐹)‘𝑦) ∈ ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
203	202	adantr 480	. . . . . . . . . . . . 13 ⊢ ((𝑦 ∈ 𝑥 ∧ 𝑥 ∈ (cf‘𝐴)) → (recs(𝐹)‘𝑦) ∈ ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
204	3	adantl 481	. . . . . . . . . . . . . 14 ⊢ ((𝑦 ∈ 𝑥 ∧ 𝑥 ∈ (cf‘𝐴)) → 𝑥 ∈ On)
205	204, 65	syl 17	. . . . . . . . . . . . 13 ⊢ ((𝑦 ∈ 𝑥 ∧ 𝑥 ∈ (cf‘𝐴)) → (recs(𝐹)‘𝑥) = ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦)))
206	203, 205	eleqtrrd 2847	. . . . . . . . . . . 12 ⊢ ((𝑦 ∈ 𝑥 ∧ 𝑥 ∈ (cf‘𝐴)) → (recs(𝐹)‘𝑦) ∈ (recs(𝐹)‘𝑥))
207	22	adantl 481	. . . . . . . . . . . 12 ⊢ ((𝑦 ∈ 𝑥 ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺‘𝑥) = (recs(𝐹)‘𝑥))
208	206, 78, 207	3eltr4d 2859	. . . . . . . . . . 11 ⊢ ((𝑦 ∈ 𝑥 ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺‘𝑦) ∈ (𝐺‘𝑥))
209	208	expcom 413	. . . . . . . . . 10 ⊢ (𝑥 ∈ (cf‘𝐴) → (𝑦 ∈ 𝑥 → (𝐺‘𝑦) ∈ (𝐺‘𝑥)))
210	209	ralrimiv 3151	. . . . . . . . 9 ⊢ (𝑥 ∈ (cf‘𝐴) → ∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ (𝐺‘𝑥))
211	210	rgen 3069	. . . . . . . 8 ⊢ ∀𝑥 ∈ (cf‘𝐴)∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ (𝐺‘𝑥)
212		issmo2 8405	. . . . . . . . 9 ⊢ (𝐺:(cf‘𝐴)⟶𝐴 → ((𝐴 ⊆ On ∧ Ord (cf‘𝐴) ∧ ∀𝑥 ∈ (cf‘𝐴)∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ (𝐺‘𝑥)) → Smo 𝐺))
213	212	com12 32	. . . . . . . 8 ⊢ ((𝐴 ⊆ On ∧ Ord (cf‘𝐴) ∧ ∀𝑥 ∈ (cf‘𝐴)∀𝑦 ∈ 𝑥 (𝐺‘𝑦) ∈ (𝐺‘𝑥)) → (𝐺:(cf‘𝐴)⟶𝐴 → Smo 𝐺))
214	192, 211, 213	mp3an23 1453	. . . . . . 7 ⊢ (𝐴 ⊆ On → (𝐺:(cf‘𝐴)⟶𝐴 → Smo 𝐺))
215	191, 188, 214	sylc 65	. . . . . 6 ⊢ ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ 𝐴 ∈ On) → Smo 𝐺)
216	215	adantlr 714	. . . . 5 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔‘𝑤)) ∧ 𝐴 ∈ On) → Smo 𝐺)
217		fveq2 6920	. . . . . . . . . . 11 ⊢ (𝑥 = 𝑤 → (𝑔‘𝑥) = (𝑔‘𝑤))
218		fveq2 6920	. . . . . . . . . . 11 ⊢ (𝑥 = 𝑤 → (𝐺‘𝑥) = (𝐺‘𝑤))
219	217, 218	sseq12d 4042	. . . . . . . . . 10 ⊢ (𝑥 = 𝑤 → ((𝑔‘𝑥) ⊆ (𝐺‘𝑥) ↔ (𝑔‘𝑤) ⊆ (𝐺‘𝑤)))
220		ssun1 4201	. . . . . . . . . . 11 ⊢ (𝑔‘𝑥) ⊆ ((𝑔‘𝑥) ∪ ∪ 𝑦 ∈ 𝑥 suc (recs(𝐹)‘𝑦))
221	220, 67	sseqtrrid 4062	. . . . . . . . . 10 ⊢ (𝑥 ∈ (cf‘𝐴) → (𝑔‘𝑥) ⊆ (𝐺‘𝑥))
222	219, 221	vtoclga 3589	. . . . . . . . 9 ⊢ (𝑤 ∈ (cf‘𝐴) → (𝑔‘𝑤) ⊆ (𝐺‘𝑤))
223		sstr 4017	. . . . . . . . . 10 ⊢ ((𝑧 ⊆ (𝑔‘𝑤) ∧ (𝑔‘𝑤) ⊆ (𝐺‘𝑤)) → 𝑧 ⊆ (𝐺‘𝑤))
224	223	expcom 413	. . . . . . . . 9 ⊢ ((𝑔‘𝑤) ⊆ (𝐺‘𝑤) → (𝑧 ⊆ (𝑔‘𝑤) → 𝑧 ⊆ (𝐺‘𝑤)))
225	222, 224	syl 17	. . . . . . . 8 ⊢ (𝑤 ∈ (cf‘𝐴) → (𝑧 ⊆ (𝑔‘𝑤) → 𝑧 ⊆ (𝐺‘𝑤)))
226	225	reximia 3087	. . . . . . 7 ⊢ (∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔‘𝑤) → ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺‘𝑤))
227	226	ralimi 3089	. . . . . 6 ⊢ (∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔‘𝑤) → ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺‘𝑤))
228	227	ad2antlr 726	. . . . 5 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔‘𝑤)) ∧ 𝐴 ∈ On) → ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺‘𝑤))
229		fnex 7254	. . . . . . 7 ⊢ ((𝐺 Fn (cf‘𝐴) ∧ (cf‘𝐴) ∈ On) → 𝐺 ∈ V)
230	185, 2, 229	mp2an 691	. . . . . 6 ⊢ 𝐺 ∈ V
231		feq1 6728	. . . . . . 7 ⊢ (𝑓 = 𝐺 → (𝑓:(cf‘𝐴)⟶𝐴 ↔ 𝐺:(cf‘𝐴)⟶𝐴))
232		smoeq 8406	. . . . . . 7 ⊢ (𝑓 = 𝐺 → (Smo 𝑓 ↔ Smo 𝐺))
233		fveq1 6919	. . . . . . . . . 10 ⊢ (𝑓 = 𝐺 → (𝑓‘𝑤) = (𝐺‘𝑤))
234	233	sseq2d 4041	. . . . . . . . 9 ⊢ (𝑓 = 𝐺 → (𝑧 ⊆ (𝑓‘𝑤) ↔ 𝑧 ⊆ (𝐺‘𝑤)))
235	234	rexbidv 3185	. . . . . . . 8 ⊢ (𝑓 = 𝐺 → (∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓‘𝑤) ↔ ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺‘𝑤)))
236	235	ralbidv 3184	. . . . . . 7 ⊢ (𝑓 = 𝐺 → (∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓‘𝑤) ↔ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺‘𝑤)))
237	231, 232, 236	3anbi123d 1436	. . . . . 6 ⊢ (𝑓 = 𝐺 → ((𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓‘𝑤)) ↔ (𝐺:(cf‘𝐴)⟶𝐴 ∧ Smo 𝐺 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺‘𝑤))))
238	230, 237	spcev 3619	. . . . 5 ⊢ ((𝐺:(cf‘𝐴)⟶𝐴 ∧ Smo 𝐺 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺‘𝑤)) → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓‘𝑤)))
239	189, 216, 228, 238	syl3anc 1371	. . . 4 ⊢ (((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔‘𝑤)) ∧ 𝐴 ∈ On) → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓‘𝑤)))
240	239	expcom 413	. . 3 ⊢ (𝐴 ∈ On → ((𝑔:(cf‘𝐴)–1-1→𝐴 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔‘𝑤)) → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓‘𝑤))))
241	240	exlimdv 1932	. 2 ⊢ (𝐴 ∈ On → (∃𝑔(𝑔:(cf‘𝐴)–1-1→𝐴 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔‘𝑤)) → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓‘𝑤))))
242	1, 241	mpd 15	1 ⊢ (𝐴 ∈ On → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧 ∈ 𝐴 ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓‘𝑤)))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 ∨ wo 846 ∧ w3a 1087 = wceq 1537 ∃wex 1777 ∈ wcel 2108 ∀wral 3067 ∃wrex 3076 Vcvv 3488 ∪ cun 3974 ⊆ wss 3976 ∪ ciun 5015 ↦ cmpt 5249 dom cdm 5700 ↾ cres 5702 Ord word 6394 Oncon0 6395 suc csuc 6397 Fun wfun 6567 Fn wfn 6568 ⟶wf 6569 –1-1→wf1 6570 ‘cfv 6573 Smo wsmo 8401 recscrecs 8426 cfccf 10006

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-rep 5303 ax-sep 5317 ax-nul 5324 ax-pow 5383 ax-pr 5447 ax-un 7770

This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-ral 3068 df-rex 3077 df-rmo 3388 df-reu 3389 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-pss 3996 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-int 4971 df-iun 5017 df-br 5167 df-opab 5229 df-mpt 5250 df-tr 5284 df-id 5593 df-eprel 5599 df-po 5607 df-so 5608 df-fr 5652 df-se 5653 df-we 5654 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-pred 6332 df-ord 6398 df-on 6399 df-suc 6401 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-f1 6578 df-fo 6579 df-f1o 6580 df-fv 6581 df-isom 6582 df-riota 7404 df-ov 7451 df-oprab 7452 df-mpo 7453 df-1st 8030 df-2nd 8031 df-frecs 8322 df-wrecs 8353 df-smo 8402 df-recs 8427 df-er 8763 df-map 8886 df-en 9004 df-dom 9005 df-sdom 9006 df-card 10008 df-cf 10010 df-acn 10011

This theorem is referenced by: cfsmo 10340

W3C validator