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Theorem cfsmolem 9044
Description: Lemma for cfsmo 9045. (Contributed by Mario Carneiro, 28-Feb-2013.)
Hypotheses
Ref Expression
cfsmolem.2 𝐹 = (𝑧 ∈ V ↦ ((𝑔‘dom 𝑧) ∪ 𝑡 ∈ dom 𝑧 suc (𝑧𝑡)))
cfsmolem.3 𝐺 = (recs(𝐹) ↾ (cf‘𝐴))
Assertion
Ref Expression
cfsmolem (𝐴 ∈ On → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓𝑤)))
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.
StepHypRef Expression
1 cff1 9032 . 2 (𝐴 ∈ On → ∃𝑔(𝑔:(cf‘𝐴)–1-1𝐴 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔𝑤)))
2 cfon 9029 . . . . . . . . . . . 12 (cf‘𝐴) ∈ On
32oneli 5799 . . . . . . . . . . 11 (𝑥 ∈ (cf‘𝐴) → 𝑥 ∈ On)
433ad2ant3 1082 . . . . . . . . . 10 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → 𝑥 ∈ On)
5 eleq1 2686 . . . . . . . . . . . . 13 (𝑥 = 𝑦 → (𝑥 ∈ (cf‘𝐴) ↔ 𝑦 ∈ (cf‘𝐴)))
653anbi3d 1402 . . . . . . . . . . . 12 (𝑥 = 𝑦 → ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ↔ (𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴))))
7 fveq2 6153 . . . . . . . . . . . . 13 (𝑥 = 𝑦 → (𝐺𝑥) = (𝐺𝑦))
87eleq1d 2683 . . . . . . . . . . . 12 (𝑥 = 𝑦 → ((𝐺𝑥) ∈ 𝐴 ↔ (𝐺𝑦) ∈ 𝐴))
96, 8imbi12d 334 . . . . . . . . . . 11 (𝑥 = 𝑦 → (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺𝑥) ∈ 𝐴) ↔ ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺𝑦) ∈ 𝐴)))
10 simpl1 1062 . . . . . . . . . . . . . . 15 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦𝑥) → 𝑔:(cf‘𝐴)–1-1𝐴)
11 simpl2 1063 . . . . . . . . . . . . . . 15 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦𝑥) → 𝐴 ∈ On)
12 ontr1 5735 . . . . . . . . . . . . . . . . . 18 ((cf‘𝐴) ∈ On → ((𝑦𝑥𝑥 ∈ (cf‘𝐴)) → 𝑦 ∈ (cf‘𝐴)))
132, 12ax-mp 5 . . . . . . . . . . . . . . . . 17 ((𝑦𝑥𝑥 ∈ (cf‘𝐴)) → 𝑦 ∈ (cf‘𝐴))
1413ancoms 469 . . . . . . . . . . . . . . . 16 ((𝑥 ∈ (cf‘𝐴) ∧ 𝑦𝑥) → 𝑦 ∈ (cf‘𝐴))
15143ad2antl3 1223 . . . . . . . . . . . . . . 15 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦𝑥) → 𝑦 ∈ (cf‘𝐴))
16 pm2.27 42 . . . . . . . . . . . . . . 15 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺𝑦) ∈ 𝐴) → (𝐺𝑦) ∈ 𝐴))
1710, 11, 15, 16syl3anc 1323 . . . . . . . . . . . . . 14 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦𝑥) → (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺𝑦) ∈ 𝐴) → (𝐺𝑦) ∈ 𝐴))
1817ralimdva 2957 . . . . . . . . . . . . 13 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦𝑥 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺𝑦) ∈ 𝐴) → ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴))
19 cfsmolem.3 . . . . . . . . . . . . . . . . . . . 20 𝐺 = (recs(𝐹) ↾ (cf‘𝐴))
2019fveq1i 6154 . . . . . . . . . . . . . . . . . . 19 (𝐺𝑥) = ((recs(𝐹) ↾ (cf‘𝐴))‘𝑥)
21 fvres 6169 . . . . . . . . . . . . . . . . . . 19 (𝑥 ∈ (cf‘𝐴) → ((recs(𝐹) ↾ (cf‘𝐴))‘𝑥) = (recs(𝐹)‘𝑥))
2220, 21syl5eq 2667 . . . . . . . . . . . . . . . . . 18 (𝑥 ∈ (cf‘𝐴) → (𝐺𝑥) = (recs(𝐹)‘𝑥))
23 recsval 7452 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ On → (recs(𝐹)‘𝑥) = (𝐹‘(recs(𝐹) ↾ 𝑥)))
24 recsfnon 7451 . . . . . . . . . . . . . . . . . . . . . . . 24 recs(𝐹) Fn On
25 fnfun 5951 . . . . . . . . . . . . . . . . . . . . . . . 24 (recs(𝐹) Fn On → Fun recs(𝐹))
2624, 25ax-mp 5 . . . . . . . . . . . . . . . . . . . . . . 23 Fun recs(𝐹)
27 vex 3192 . . . . . . . . . . . . . . . . . . . . . . 23 𝑥 ∈ V
28 resfunexg 6439 . . . . . . . . . . . . . . . . . . . . . . 23 ((Fun recs(𝐹) ∧ 𝑥 ∈ V) → (recs(𝐹) ↾ 𝑥) ∈ V)
2926, 27, 28mp2an 707 . . . . . . . . . . . . . . . . . . . . . 22 (recs(𝐹) ↾ 𝑥) ∈ V
30 dmeq 5289 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑧 = (recs(𝐹) ↾ 𝑥) → dom 𝑧 = dom (recs(𝐹) ↾ 𝑥))
3130fveq2d 6157 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑧 = (recs(𝐹) ↾ 𝑥) → (𝑔‘dom 𝑧) = (𝑔‘dom (recs(𝐹) ↾ 𝑥)))
32 fveq1 6152 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑧 = (recs(𝐹) ↾ 𝑥) → (𝑧𝑡) = ((recs(𝐹) ↾ 𝑥)‘𝑡))
33 suceq 5754 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑧𝑡) = ((recs(𝐹) ↾ 𝑥)‘𝑡) → suc (𝑧𝑡) = suc ((recs(𝐹) ↾ 𝑥)‘𝑡))
3432, 33syl 17 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑧 = (recs(𝐹) ↾ 𝑥) → suc (𝑧𝑡) = suc ((recs(𝐹) ↾ 𝑥)‘𝑡))
3530, 34iuneq12d 4517 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑧 = (recs(𝐹) ↾ 𝑥) → 𝑡 ∈ dom 𝑧 suc (𝑧𝑡) = 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡))
3631, 35uneq12d 3751 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑧 = (recs(𝐹) ↾ 𝑥) → ((𝑔‘dom 𝑧) ∪ 𝑡 ∈ dom 𝑧 suc (𝑧𝑡)) = ((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 (𝑧𝑡)))
38 fvex 6163 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∈ V
3929dmex 7053 . . . . . . . . . . . . . . . . . . . . . . . . 25 dom (recs(𝐹) ↾ 𝑥) ∈ V
40 fvex 6163 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((recs(𝐹) ↾ 𝑥)‘𝑡) ∈ V
4140sucex 6965 . . . . . . . . . . . . . . . . . . . . . . . . 25 suc ((recs(𝐹) ↾ 𝑥)‘𝑡) ∈ V
4239, 41iunex 7100 . . . . . . . . . . . . . . . . . . . . . . . 24 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡) ∈ V
4338, 42unex 6916 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡)) ∈ V
4436, 37, 43fvmpt 6244 . . . . . . . . . . . . . . . . . . . . . 22 ((recs(𝐹) ↾ 𝑥) ∈ V → (𝐹‘(recs(𝐹) ↾ 𝑥)) = ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡)))
4529, 44ax-mp 5 . . . . . . . . . . . . . . . . . . . . 21 (𝐹‘(recs(𝐹) ↾ 𝑥)) = ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡))
4623, 45syl6eq 2671 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ On → (recs(𝐹)‘𝑥) = ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡)))
47 onss 6944 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 ∈ On → 𝑥 ⊆ On)
48 fnssres 5967 . . . . . . . . . . . . . . . . . . . . . 22 ((recs(𝐹) Fn On ∧ 𝑥 ⊆ On) → (recs(𝐹) ↾ 𝑥) Fn 𝑥)
4924, 47, 48sylancr 694 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ On → (recs(𝐹) ↾ 𝑥) Fn 𝑥)
50 fndm 5953 . . . . . . . . . . . . . . . . . . . . 21 ((recs(𝐹) ↾ 𝑥) Fn 𝑥 → dom (recs(𝐹) ↾ 𝑥) = 𝑥)
51 fveq2 6153 . . . . . . . . . . . . . . . . . . . . . 22 (dom (recs(𝐹) ↾ 𝑥) = 𝑥 → (𝑔‘dom (recs(𝐹) ↾ 𝑥)) = (𝑔𝑥))
52 iuneq1 4505 . . . . . . . . . . . . . . . . . . . . . . 23 (dom (recs(𝐹) ↾ 𝑥) = 𝑥 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = 𝑡𝑥 suc ((recs(𝐹) ↾ 𝑥)‘𝑡))
53 fvres 6169 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑡𝑥 → ((recs(𝐹) ↾ 𝑥)‘𝑡) = (recs(𝐹)‘𝑡))
54 suceq 5754 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((recs(𝐹) ↾ 𝑥)‘𝑡) = (recs(𝐹)‘𝑡) → suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = suc (recs(𝐹)‘𝑡))
5553, 54syl 17 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑡𝑥 → suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = suc (recs(𝐹)‘𝑡))
5655iuneq2i 4510 . . . . . . . . . . . . . . . . . . . . . . . 24 𝑡𝑥 suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = 𝑡𝑥 suc (recs(𝐹)‘𝑡)
57 fveq2 6153 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑦 = 𝑡 → (recs(𝐹)‘𝑦) = (recs(𝐹)‘𝑡))
58 suceq 5754 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((recs(𝐹)‘𝑦) = (recs(𝐹)‘𝑡) → suc (recs(𝐹)‘𝑦) = suc (recs(𝐹)‘𝑡))
5957, 58syl 17 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑦 = 𝑡 → suc (recs(𝐹)‘𝑦) = suc (recs(𝐹)‘𝑡))
6059cbviunv 4530 . . . . . . . . . . . . . . . . . . . . . . . 24 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝑡𝑥 suc (recs(𝐹)‘𝑡)
6156, 60eqtr4i 2646 . . . . . . . . . . . . . . . . . . . . . . 23 𝑡𝑥 suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = 𝑦𝑥 suc (recs(𝐹)‘𝑦)
6252, 61syl6eq 2671 . . . . . . . . . . . . . . . . . . . . . 22 (dom (recs(𝐹) ↾ 𝑥) = 𝑥 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡) = 𝑦𝑥 suc (recs(𝐹)‘𝑦))
6351, 62uneq12d 3751 . . . . . . . . . . . . . . . . . . . . 21 (dom (recs(𝐹) ↾ 𝑥) = 𝑥 → ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡)) = ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
6449, 50, 633syl 18 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ On → ((𝑔‘dom (recs(𝐹) ↾ 𝑥)) ∪ 𝑡 ∈ dom (recs(𝐹) ↾ 𝑥)suc ((recs(𝐹) ↾ 𝑥)‘𝑡)) = ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
6546, 64eqtrd 2655 . . . . . . . . . . . . . . . . . . 19 (𝑥 ∈ On → (recs(𝐹)‘𝑥) = ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
663, 65syl 17 . . . . . . . . . . . . . . . . . 18 (𝑥 ∈ (cf‘𝐴) → (recs(𝐹)‘𝑥) = ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
6722, 66eqtrd 2655 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ (cf‘𝐴) → (𝐺𝑥) = ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
68673ad2ant2 1081 . . . . . . . . . . . . . . . 16 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → (𝐺𝑥) = ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
69 eloni 5697 . . . . . . . . . . . . . . . . . . 19 (𝐴 ∈ On → Ord 𝐴)
7069adantl 482 . . . . . . . . . . . . . . . . . 18 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) → Ord 𝐴)
71703ad2ant1 1080 . . . . . . . . . . . . . . . . 17 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → Ord 𝐴)
72 f1f 6063 . . . . . . . . . . . . . . . . . . . 20 (𝑔:(cf‘𝐴)–1-1𝐴𝑔:(cf‘𝐴)⟶𝐴)
7372ffvelrnda 6320 . . . . . . . . . . . . . . . . . . 19 ((𝑔:(cf‘𝐴)–1-1𝐴𝑥 ∈ (cf‘𝐴)) → (𝑔𝑥) ∈ 𝐴)
7473adantlr 750 . . . . . . . . . . . . . . . . . 18 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴)) → (𝑔𝑥) ∈ 𝐴)
75743adant3 1079 . . . . . . . . . . . . . . . . 17 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → (𝑔𝑥) ∈ 𝐴)
7619fveq1i 6154 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝐺𝑦) = ((recs(𝐹) ↾ (cf‘𝐴))‘𝑦)
7713fvresd 6170 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ((𝑦𝑥𝑥 ∈ (cf‘𝐴)) → ((recs(𝐹) ↾ (cf‘𝐴))‘𝑦) = (recs(𝐹)‘𝑦))
7876, 77syl5eq 2667 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑦𝑥𝑥 ∈ (cf‘𝐴)) → (𝐺𝑦) = (recs(𝐹)‘𝑦))
7978adantrl 751 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑦𝑥 ∧ (𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴))) → (𝐺𝑦) = (recs(𝐹)‘𝑦))
8079ancoms 469 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦𝑥) → (𝐺𝑦) = (recs(𝐹)‘𝑦))
8180eleq1d 2683 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦𝑥) → ((𝐺𝑦) ∈ 𝐴 ↔ (recs(𝐹)‘𝑦) ∈ 𝐴))
82 ordsucss 6972 . . . . . . . . . . . . . . . . . . . . . . . . 25 (Ord 𝐴 → ((recs(𝐹)‘𝑦) ∈ 𝐴 → suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
8369, 82syl 17 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝐴 ∈ On → ((recs(𝐹)‘𝑦) ∈ 𝐴 → suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
8483ad2antrr 761 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦𝑥) → ((recs(𝐹)‘𝑦) ∈ 𝐴 → suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
8581, 84sylbid 230 . . . . . . . . . . . . . . . . . . . . . 22 (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦𝑥) → ((𝐺𝑦) ∈ 𝐴 → suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
8685ralimdva 2957 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴 → ∀𝑦𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
87 iunss 4532 . . . . . . . . . . . . . . . . . . . . 21 ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴 ↔ ∀𝑦𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴)
8886, 87syl6ibr 242 . . . . . . . . . . . . . . . . . . . 20 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴))
89883impia 1258 . . . . . . . . . . . . . . . . . . 19 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → 𝑦𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴)
90 onelon 5712 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝐴 ∈ On ∧ (recs(𝐹)‘𝑦) ∈ 𝐴) → (recs(𝐹)‘𝑦) ∈ On)
9190ex 450 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝐴 ∈ On → ((recs(𝐹)‘𝑦) ∈ 𝐴 → (recs(𝐹)‘𝑦) ∈ On))
9291ad2antrr 761 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦𝑥) → ((recs(𝐹)‘𝑦) ∈ 𝐴 → (recs(𝐹)‘𝑦) ∈ On))
9381, 92sylbid 230 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦𝑥) → ((𝐺𝑦) ∈ 𝐴 → (recs(𝐹)‘𝑦) ∈ On))
94 suceloni 6967 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((recs(𝐹)‘𝑦) ∈ On → suc (recs(𝐹)‘𝑦) ∈ On)
9593, 94syl6 35 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) ∧ 𝑦𝑥) → ((𝐺𝑦) ∈ 𝐴 → suc (recs(𝐹)‘𝑦) ∈ On))
9695ralimdva 2957 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴 → ∀𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ On))
97963impia 1258 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → ∀𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ On)
98 iunon 7388 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑥 ∈ V ∧ ∀𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ On) → 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ On)
9927, 98mpan 705 . . . . . . . . . . . . . . . . . . . . . 22 (∀𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ On → 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ On)
10097, 99syl 17 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ On)
101 simp1 1059 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → 𝐴 ∈ On)
102 onsseleq 5729 . . . . . . . . . . . . . . . . . . . . 21 (( 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ On ∧ 𝐴 ∈ On) → ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴 ↔ ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴)))
103100, 101, 102syl2anc 692 . . . . . . . . . . . . . . . . . . . 20 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴 ↔ ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴)))
104 idd 24 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴))
105 simpll 789 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) ∧ ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On)) → 𝑥 ∈ (cf‘𝐴))
106 simprr 795 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) ∧ ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On)) → 𝐴 ∈ On)
1073ad2antrr 761 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) ∧ ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On)) → 𝑥 ∈ On)
1083, 49syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑥 ∈ (cf‘𝐴) → (recs(𝐹) ↾ 𝑥) Fn 𝑥)
109108adantr 481 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → (recs(𝐹) ↾ 𝑥) Fn 𝑥)
11078ancoms 469 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((𝑥 ∈ (cf‘𝐴) ∧ 𝑦𝑥) → (𝐺𝑦) = (recs(𝐹)‘𝑦))
111 fvres 6169 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (𝑦𝑥 → ((recs(𝐹) ↾ 𝑥)‘𝑦) = (recs(𝐹)‘𝑦))
112111adantl 482 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((𝑥 ∈ (cf‘𝐴) ∧ 𝑦𝑥) → ((recs(𝐹) ↾ 𝑥)‘𝑦) = (recs(𝐹)‘𝑦))
113110, 112eqtr4d 2658 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ((𝑥 ∈ (cf‘𝐴) ∧ 𝑦𝑥) → (𝐺𝑦) = ((recs(𝐹) ↾ 𝑥)‘𝑦))
114113eleq1d 2683 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ((𝑥 ∈ (cf‘𝐴) ∧ 𝑦𝑥) → ((𝐺𝑦) ∈ 𝐴 ↔ ((recs(𝐹) ↾ 𝑥)‘𝑦) ∈ 𝐴))
115114ralbidva 2980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑥 ∈ (cf‘𝐴) → (∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴 ↔ ∀𝑦𝑥 ((recs(𝐹) ↾ 𝑥)‘𝑦) ∈ 𝐴))
116115biimpa 501 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → ∀𝑦𝑥 ((recs(𝐹) ↾ 𝑥)‘𝑦) ∈ 𝐴)
117 ffnfv 6349 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ((recs(𝐹) ↾ 𝑥):𝑥𝐴 ↔ ((recs(𝐹) ↾ 𝑥) Fn 𝑥 ∧ ∀𝑦𝑥 ((recs(𝐹) ↾ 𝑥)‘𝑦) ∈ 𝐴))
118109, 116, 117sylanbrc 697 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → (recs(𝐹) ↾ 𝑥):𝑥𝐴)
119 eleq2 2687 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 → (𝑡 𝑦𝑥 suc (recs(𝐹)‘𝑦) ↔ 𝑡𝐴))
120119biimpar 502 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 (( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝑡𝐴) → 𝑡 𝑦𝑥 suc (recs(𝐹)‘𝑦))
121120adantrl 751 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 (( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ (𝐴 ∈ On ∧ 𝑡𝐴)) → 𝑡 𝑦𝑥 suc (recs(𝐹)‘𝑦))
1221213adant1 1077 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (((recs(𝐹) ↾ 𝑥):𝑥𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ (𝐴 ∈ On ∧ 𝑡𝐴)) → 𝑡 𝑦𝑥 suc (recs(𝐹)‘𝑦))
123 onelon 5712 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 ((𝐴 ∈ On ∧ 𝑡𝐴) → 𝑡 ∈ On)
124111adantl 482 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 (((recs(𝐹) ↾ 𝑥):𝑥𝐴𝑦𝑥) → ((recs(𝐹) ↾ 𝑥)‘𝑦) = (recs(𝐹)‘𝑦))
125 ffvelrn 6318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 (((recs(𝐹) ↾ 𝑥):𝑥𝐴𝑦𝑥) → ((recs(𝐹) ↾ 𝑥)‘𝑦) ∈ 𝐴)
126124, 125eqeltrrd 2699 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 (((recs(𝐹) ↾ 𝑥):𝑥𝐴𝑦𝑥) → (recs(𝐹)‘𝑦) ∈ 𝐴)
127126, 90sylan2 491 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 ((𝐴 ∈ On ∧ ((recs(𝐹) ↾ 𝑥):𝑥𝐴𝑦𝑥)) → (recs(𝐹)‘𝑦) ∈ On)
128127adantlr 750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 (((𝐴 ∈ On ∧ 𝑡𝐴) ∧ ((recs(𝐹) ↾ 𝑥):𝑥𝐴𝑦𝑥)) → (recs(𝐹)‘𝑦) ∈ On)
129 onsssuc 5777 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 ((𝑡 ∈ On ∧ (recs(𝐹)‘𝑦) ∈ On) → (𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 ∈ suc (recs(𝐹)‘𝑦)))
130123, 128, 129syl2an2r 875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 (((𝐴 ∈ On ∧ 𝑡𝐴) ∧ ((recs(𝐹) ↾ 𝑥):𝑥𝐴𝑦𝑥)) → (𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 ∈ suc (recs(𝐹)‘𝑦)))
131130anassrs 679 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((𝐴 ∈ On ∧ 𝑡𝐴) ∧ (recs(𝐹) ↾ 𝑥):𝑥𝐴) ∧ 𝑦𝑥) → (𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 ∈ suc (recs(𝐹)‘𝑦)))
132131rexbidva 3043 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 (((𝐴 ∈ On ∧ 𝑡𝐴) ∧ (recs(𝐹) ↾ 𝑥):𝑥𝐴) → (∃𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ ∃𝑦𝑥 𝑡 ∈ suc (recs(𝐹)‘𝑦)))
133 eliun 4495 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 (𝑡 𝑦𝑥 suc (recs(𝐹)‘𝑦) ↔ ∃𝑦𝑥 𝑡 ∈ suc (recs(𝐹)‘𝑦))
134132, 133syl6bbr 278 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 (((𝐴 ∈ On ∧ 𝑡𝐴) ∧ (recs(𝐹) ↾ 𝑥):𝑥𝐴) → (∃𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
135134ancoms 469 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 (((recs(𝐹) ↾ 𝑥):𝑥𝐴 ∧ (𝐴 ∈ On ∧ 𝑡𝐴)) → (∃𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
1361353adant2 1078 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (((recs(𝐹) ↾ 𝑥):𝑥𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ (𝐴 ∈ On ∧ 𝑡𝐴)) → (∃𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦) ↔ 𝑡 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
137122, 136mpbird 247 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (((recs(𝐹) ↾ 𝑥):𝑥𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 ∧ (𝐴 ∈ On ∧ 𝑡𝐴)) → ∃𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
1381373expa 1262 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((recs(𝐹) ↾ 𝑥):𝑥𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴) ∧ (𝐴 ∈ On ∧ 𝑡𝐴)) → ∃𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
139138anassrs 679 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (((((recs(𝐹) ↾ 𝑥):𝑥𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴) ∧ 𝐴 ∈ On) ∧ 𝑡𝐴) → ∃𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
140139ralrimiva 2961 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ((((recs(𝐹) ↾ 𝑥):𝑥𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴) ∧ 𝐴 ∈ On) → ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
141140expl 647 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ((recs(𝐹) ↾ 𝑥):𝑥𝐴 → (( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On) → ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦)))
142118, 141syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → (( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On) → ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦)))
143142imp 445 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) ∧ ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On)) → ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
144 feq1 5988 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑓 = (recs(𝐹) ↾ 𝑥) → (𝑓:𝑥𝐴 ↔ (recs(𝐹) ↾ 𝑥):𝑥𝐴))
145 fveq1 6152 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (𝑓 = (recs(𝐹) ↾ 𝑥) → (𝑓𝑦) = ((recs(𝐹) ↾ 𝑥)‘𝑦))
146145sseq2d 3617 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (𝑓 = (recs(𝐹) ↾ 𝑥) → (𝑡 ⊆ (𝑓𝑦) ↔ 𝑡 ⊆ ((recs(𝐹) ↾ 𝑥)‘𝑦)))
147146rexbidv 3046 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (𝑓 = (recs(𝐹) ↾ 𝑥) → (∃𝑦𝑥 𝑡 ⊆ (𝑓𝑦) ↔ ∃𝑦𝑥 𝑡 ⊆ ((recs(𝐹) ↾ 𝑥)‘𝑦)))
148111sseq2d 3617 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (𝑦𝑥 → (𝑡 ⊆ ((recs(𝐹) ↾ 𝑥)‘𝑦) ↔ 𝑡 ⊆ (recs(𝐹)‘𝑦)))
149148rexbiia 3034 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (∃𝑦𝑥 𝑡 ⊆ ((recs(𝐹) ↾ 𝑥)‘𝑦) ↔ ∃𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))
150147, 149syl6bb 276 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 (𝑓 = (recs(𝐹) ↾ 𝑥) → (∃𝑦𝑥 𝑡 ⊆ (𝑓𝑦) ↔ ∃𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦)))
151150ralbidv 2981 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (𝑓 = (recs(𝐹) ↾ 𝑥) → (∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (𝑓𝑦) ↔ ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦)))
152144, 151anbi12d 746 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑓 = (recs(𝐹) ↾ 𝑥) → ((𝑓:𝑥𝐴 ∧ ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (𝑓𝑦)) ↔ ((recs(𝐹) ↾ 𝑥):𝑥𝐴 ∧ ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦))))
15329, 152spcev 3289 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (((recs(𝐹) ↾ 𝑥):𝑥𝐴 ∧ ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (recs(𝐹)‘𝑦)) → ∃𝑓(𝑓:𝑥𝐴 ∧ ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (𝑓𝑦)))
154118, 143, 153syl2an2r 875 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) ∧ ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On)) → ∃𝑓(𝑓:𝑥𝐴 ∧ ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (𝑓𝑦)))
155 cfflb 9033 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ((𝐴 ∈ On ∧ 𝑥 ∈ On) → (∃𝑓(𝑓:𝑥𝐴 ∧ ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (𝑓𝑦)) → (cf‘𝐴) ⊆ 𝑥))
156155imp 445 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (((𝐴 ∈ On ∧ 𝑥 ∈ On) ∧ ∃𝑓(𝑓:𝑥𝐴 ∧ ∀𝑡𝐴𝑦𝑥 𝑡 ⊆ (𝑓𝑦))) → (cf‘𝐴) ⊆ 𝑥)
157106, 107, 154, 156syl21anc 1322 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) ∧ ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On)) → (cf‘𝐴) ⊆ 𝑥)
158 ontri1 5721 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (((cf‘𝐴) ∈ On ∧ 𝑥 ∈ On) → ((cf‘𝐴) ⊆ 𝑥 ↔ ¬ 𝑥 ∈ (cf‘𝐴)))
1592, 3, 158sylancr 694 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑥 ∈ (cf‘𝐴) → ((cf‘𝐴) ⊆ 𝑥 ↔ ¬ 𝑥 ∈ (cf‘𝐴)))
160159ad2antrr 761 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) ∧ ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On)) → ((cf‘𝐴) ⊆ 𝑥 ↔ ¬ 𝑥 ∈ (cf‘𝐴)))
161157, 160mpbid 222 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) ∧ ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On)) → ¬ 𝑥 ∈ (cf‘𝐴))
162105, 161pm2.21dd 186 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) ∧ ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On)) → 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴)
163162ex 450 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → (( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴𝐴 ∈ On) → 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴))
164163expcomd 454 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → (𝐴 ∈ On → ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴)))
165164com12 32 . . . . . . . . . . . . . . . . . . . . . 22 (𝐴 ∈ On → ((𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴)))
1661653impib 1259 . . . . . . . . . . . . . . . . . . . . 21 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴))
167104, 166jaod 395 . . . . . . . . . . . . . . . . . . . 20 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → (( 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) = 𝐴) → 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴))
168103, 167sylbid 230 . . . . . . . . . . . . . . . . . . 19 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → ( 𝑦𝑥 suc (recs(𝐹)‘𝑦) ⊆ 𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴))
16989, 168mpd 15 . . . . . . . . . . . . . . . . . 18 ((𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴)
1701693adant1l 1315 . . . . . . . . . . . . . . . . 17 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴)
171 ordunel 6981 . . . . . . . . . . . . . . . . 17 ((Ord 𝐴 ∧ (𝑔𝑥) ∈ 𝐴 𝑦𝑥 suc (recs(𝐹)‘𝑦) ∈ 𝐴) → ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)) ∈ 𝐴)
17271, 75, 170, 171syl3anc 1323 . . . . . . . . . . . . . . . 16 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)) ∈ 𝐴)
17368, 172eqeltrd 2698 . . . . . . . . . . . . . . 15 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴) ∧ ∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴) → (𝐺𝑥) ∈ 𝐴)
1741733expia 1264 . . . . . . . . . . . . . 14 (((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴 → (𝐺𝑥) ∈ 𝐴))
1751743impa 1256 . . . . . . . . . . . . 13 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (∀𝑦𝑥 (𝐺𝑦) ∈ 𝐴 → (𝐺𝑥) ∈ 𝐴))
17618, 175syldc 48 . . . . . . . . . . . 12 (∀𝑦𝑥 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺𝑦) ∈ 𝐴) → ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺𝑥) ∈ 𝐴))
177176a1i 11 . . . . . . . . . . 11 (𝑥 ∈ On → (∀𝑦𝑥 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑦 ∈ (cf‘𝐴)) → (𝐺𝑦) ∈ 𝐴) → ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺𝑥) ∈ 𝐴)))
1789, 177tfis2 7010 . . . . . . . . . 10 (𝑥 ∈ On → ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺𝑥) ∈ 𝐴))
1794, 178mpcom 38 . . . . . . . . 9 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On ∧ 𝑥 ∈ (cf‘𝐴)) → (𝐺𝑥) ∈ 𝐴)
1801793expia 1264 . . . . . . . 8 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) → (𝑥 ∈ (cf‘𝐴) → (𝐺𝑥) ∈ 𝐴))
181180ralrimiv 2960 . . . . . . 7 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) → ∀𝑥 ∈ (cf‘𝐴)(𝐺𝑥) ∈ 𝐴)
1822onssi 6991 . . . . . . . . 9 (cf‘𝐴) ⊆ On
183 fnssres 5967 . . . . . . . . . 10 ((recs(𝐹) Fn On ∧ (cf‘𝐴) ⊆ On) → (recs(𝐹) ↾ (cf‘𝐴)) Fn (cf‘𝐴))
18419fneq1i 5948 . . . . . . . . . 10 (𝐺 Fn (cf‘𝐴) ↔ (recs(𝐹) ↾ (cf‘𝐴)) Fn (cf‘𝐴))
185183, 184sylibr 224 . . . . . . . . 9 ((recs(𝐹) Fn On ∧ (cf‘𝐴) ⊆ On) → 𝐺 Fn (cf‘𝐴))
18624, 182, 185mp2an 707 . . . . . . . 8 𝐺 Fn (cf‘𝐴)
187 ffnfv 6349 . . . . . . . 8 (𝐺:(cf‘𝐴)⟶𝐴 ↔ (𝐺 Fn (cf‘𝐴) ∧ ∀𝑥 ∈ (cf‘𝐴)(𝐺𝑥) ∈ 𝐴))
188186, 187mpbiran 952 . . . . . . 7 (𝐺:(cf‘𝐴)⟶𝐴 ↔ ∀𝑥 ∈ (cf‘𝐴)(𝐺𝑥) ∈ 𝐴)
189181, 188sylibr 224 . . . . . 6 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) → 𝐺:(cf‘𝐴)⟶𝐴)
190189adantlr 750 . . . . 5 (((𝑔:(cf‘𝐴)–1-1𝐴 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔𝑤)) ∧ 𝐴 ∈ On) → 𝐺:(cf‘𝐴)⟶𝐴)
191 onss 6944 . . . . . . . 8 (𝐴 ∈ On → 𝐴 ⊆ On)
192191adantl 482 . . . . . . 7 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) → 𝐴 ⊆ On)
1932onordi 5796 . . . . . . . 8 Ord (cf‘𝐴)
194 fvex 6163 . . . . . . . . . . . . . . . . 17 (recs(𝐹)‘𝑦) ∈ V
195194sucid 5768 . . . . . . . . . . . . . . . 16 (recs(𝐹)‘𝑦) ∈ suc (recs(𝐹)‘𝑦)
196 fveq2 6153 . . . . . . . . . . . . . . . . . . 19 (𝑡 = 𝑦 → (recs(𝐹)‘𝑡) = (recs(𝐹)‘𝑦))
197 suceq 5754 . . . . . . . . . . . . . . . . . . 19 ((recs(𝐹)‘𝑡) = (recs(𝐹)‘𝑦) → suc (recs(𝐹)‘𝑡) = suc (recs(𝐹)‘𝑦))
198196, 197syl 17 . . . . . . . . . . . . . . . . . 18 (𝑡 = 𝑦 → suc (recs(𝐹)‘𝑡) = suc (recs(𝐹)‘𝑦))
199198eliuni 4497 . . . . . . . . . . . . . . . . 17 ((𝑦𝑥 ∧ (recs(𝐹)‘𝑦) ∈ suc (recs(𝐹)‘𝑦)) → (recs(𝐹)‘𝑦) ∈ 𝑡𝑥 suc (recs(𝐹)‘𝑡))
200199, 60syl6eleqr 2709 . . . . . . . . . . . . . . . 16 ((𝑦𝑥 ∧ (recs(𝐹)‘𝑦) ∈ suc (recs(𝐹)‘𝑦)) → (recs(𝐹)‘𝑦) ∈ 𝑦𝑥 suc (recs(𝐹)‘𝑦))
201195, 200mpan2 706 . . . . . . . . . . . . . . 15 (𝑦𝑥 → (recs(𝐹)‘𝑦) ∈ 𝑦𝑥 suc (recs(𝐹)‘𝑦))
202 elun2 3764 . . . . . . . . . . . . . . 15 ((recs(𝐹)‘𝑦) ∈ 𝑦𝑥 suc (recs(𝐹)‘𝑦) → (recs(𝐹)‘𝑦) ∈ ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
203201, 202syl 17 . . . . . . . . . . . . . 14 (𝑦𝑥 → (recs(𝐹)‘𝑦) ∈ ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
204203adantr 481 . . . . . . . . . . . . 13 ((𝑦𝑥𝑥 ∈ (cf‘𝐴)) → (recs(𝐹)‘𝑦) ∈ ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
2053adantl 482 . . . . . . . . . . . . . 14 ((𝑦𝑥𝑥 ∈ (cf‘𝐴)) → 𝑥 ∈ On)
206205, 65syl 17 . . . . . . . . . . . . 13 ((𝑦𝑥𝑥 ∈ (cf‘𝐴)) → (recs(𝐹)‘𝑥) = ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦)))
207204, 206eleqtrrd 2701 . . . . . . . . . . . 12 ((𝑦𝑥𝑥 ∈ (cf‘𝐴)) → (recs(𝐹)‘𝑦) ∈ (recs(𝐹)‘𝑥))
20822adantl 482 . . . . . . . . . . . 12 ((𝑦𝑥𝑥 ∈ (cf‘𝐴)) → (𝐺𝑥) = (recs(𝐹)‘𝑥))
209207, 78, 2083eltr4d 2713 . . . . . . . . . . 11 ((𝑦𝑥𝑥 ∈ (cf‘𝐴)) → (𝐺𝑦) ∈ (𝐺𝑥))
210209expcom 451 . . . . . . . . . 10 (𝑥 ∈ (cf‘𝐴) → (𝑦𝑥 → (𝐺𝑦) ∈ (𝐺𝑥)))
211210ralrimiv 2960 . . . . . . . . 9 (𝑥 ∈ (cf‘𝐴) → ∀𝑦𝑥 (𝐺𝑦) ∈ (𝐺𝑥))
212211rgen 2917 . . . . . . . 8 𝑥 ∈ (cf‘𝐴)∀𝑦𝑥 (𝐺𝑦) ∈ (𝐺𝑥)
213 issmo2 7398 . . . . . . . . 9 (𝐺:(cf‘𝐴)⟶𝐴 → ((𝐴 ⊆ On ∧ Ord (cf‘𝐴) ∧ ∀𝑥 ∈ (cf‘𝐴)∀𝑦𝑥 (𝐺𝑦) ∈ (𝐺𝑥)) → Smo 𝐺))
214213com12 32 . . . . . . . 8 ((𝐴 ⊆ On ∧ Ord (cf‘𝐴) ∧ ∀𝑥 ∈ (cf‘𝐴)∀𝑦𝑥 (𝐺𝑦) ∈ (𝐺𝑥)) → (𝐺:(cf‘𝐴)⟶𝐴 → Smo 𝐺))
215193, 212, 214mp3an23 1413 . . . . . . 7 (𝐴 ⊆ On → (𝐺:(cf‘𝐴)⟶𝐴 → Smo 𝐺))
216192, 189, 215sylc 65 . . . . . 6 ((𝑔:(cf‘𝐴)–1-1𝐴𝐴 ∈ On) → Smo 𝐺)
217216adantlr 750 . . . . 5 (((𝑔:(cf‘𝐴)–1-1𝐴 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔𝑤)) ∧ 𝐴 ∈ On) → Smo 𝐺)
218 fveq2 6153 . . . . . . . . . . 11 (𝑥 = 𝑤 → (𝑔𝑥) = (𝑔𝑤))
219 fveq2 6153 . . . . . . . . . . 11 (𝑥 = 𝑤 → (𝐺𝑥) = (𝐺𝑤))
220218, 219sseq12d 3618 . . . . . . . . . 10 (𝑥 = 𝑤 → ((𝑔𝑥) ⊆ (𝐺𝑥) ↔ (𝑔𝑤) ⊆ (𝐺𝑤)))
221 ssun1 3759 . . . . . . . . . . 11 (𝑔𝑥) ⊆ ((𝑔𝑥) ∪ 𝑦𝑥 suc (recs(𝐹)‘𝑦))
222221, 67syl5sseqr 3638 . . . . . . . . . 10 (𝑥 ∈ (cf‘𝐴) → (𝑔𝑥) ⊆ (𝐺𝑥))
223220, 222vtoclga 3261 . . . . . . . . 9 (𝑤 ∈ (cf‘𝐴) → (𝑔𝑤) ⊆ (𝐺𝑤))
224 sstr 3595 . . . . . . . . . 10 ((𝑧 ⊆ (𝑔𝑤) ∧ (𝑔𝑤) ⊆ (𝐺𝑤)) → 𝑧 ⊆ (𝐺𝑤))
225224expcom 451 . . . . . . . . 9 ((𝑔𝑤) ⊆ (𝐺𝑤) → (𝑧 ⊆ (𝑔𝑤) → 𝑧 ⊆ (𝐺𝑤)))
226223, 225syl 17 . . . . . . . 8 (𝑤 ∈ (cf‘𝐴) → (𝑧 ⊆ (𝑔𝑤) → 𝑧 ⊆ (𝐺𝑤)))
227226reximia 3004 . . . . . . 7 (∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔𝑤) → ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺𝑤))
228227ralimi 2947 . . . . . 6 (∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔𝑤) → ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺𝑤))
229228ad2antlr 762 . . . . 5 (((𝑔:(cf‘𝐴)–1-1𝐴 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔𝑤)) ∧ 𝐴 ∈ On) → ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺𝑤))
230 fnex 6441 . . . . . . 7 ((𝐺 Fn (cf‘𝐴) ∧ (cf‘𝐴) ∈ On) → 𝐺 ∈ V)
231186, 2, 230mp2an 707 . . . . . 6 𝐺 ∈ V
232 feq1 5988 . . . . . . 7 (𝑓 = 𝐺 → (𝑓:(cf‘𝐴)⟶𝐴𝐺:(cf‘𝐴)⟶𝐴))
233 smoeq 7399 . . . . . . 7 (𝑓 = 𝐺 → (Smo 𝑓 ↔ Smo 𝐺))
234 fveq1 6152 . . . . . . . . . 10 (𝑓 = 𝐺 → (𝑓𝑤) = (𝐺𝑤))
235234sseq2d 3617 . . . . . . . . 9 (𝑓 = 𝐺 → (𝑧 ⊆ (𝑓𝑤) ↔ 𝑧 ⊆ (𝐺𝑤)))
236235rexbidv 3046 . . . . . . . 8 (𝑓 = 𝐺 → (∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓𝑤) ↔ ∃𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺𝑤)))
237236ralbidv 2981 . . . . . . 7 (𝑓 = 𝐺 → (∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓𝑤) ↔ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺𝑤)))
238232, 233, 2373anbi123d 1396 . . . . . 6 (𝑓 = 𝐺 → ((𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓𝑤)) ↔ (𝐺:(cf‘𝐴)⟶𝐴 ∧ Smo 𝐺 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺𝑤))))
239231, 238spcev 3289 . . . . 5 ((𝐺:(cf‘𝐴)⟶𝐴 ∧ Smo 𝐺 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝐺𝑤)) → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓𝑤)))
240190, 217, 229, 239syl3anc 1323 . . . 4 (((𝑔:(cf‘𝐴)–1-1𝐴 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔𝑤)) ∧ 𝐴 ∈ On) → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓𝑤)))
241240expcom 451 . . 3 (𝐴 ∈ On → ((𝑔:(cf‘𝐴)–1-1𝐴 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔𝑤)) → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓𝑤))))
242241exlimdv 1858 . 2 (𝐴 ∈ On → (∃𝑔(𝑔:(cf‘𝐴)–1-1𝐴 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑔𝑤)) → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓𝑤))))
2431, 242mpd 15 1 (𝐴 ∈ On → ∃𝑓(𝑓:(cf‘𝐴)⟶𝐴 ∧ Smo 𝑓 ∧ ∀𝑧𝐴𝑤 ∈ (cf‘𝐴)𝑧 ⊆ (𝑓𝑤)))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wo 383  wa 384  w3a 1036   = wceq 1480  wex 1701  wcel 1987  wral 2907  wrex 2908  Vcvv 3189  cun 3557  wss 3559   ciun 4490  cmpt 4678  dom cdm 5079  cres 5081  Ord word 5686  Oncon0 5687  suc csuc 5689  Fun wfun 5846   Fn wfn 5847  wf 5848  1-1wf1 5849  cfv 5852  Smo wsmo 7394  recscrecs 7419  cfccf 8715
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-rep 4736  ax-sep 4746  ax-nul 4754  ax-pow 4808  ax-pr 4872  ax-un 6909
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1037  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-ral 2912  df-rex 2913  df-reu 2914  df-rmo 2915  df-rab 2916  df-v 3191  df-sbc 3422  df-csb 3519  df-dif 3562  df-un 3564  df-in 3566  df-ss 3573  df-pss 3575  df-nul 3897  df-if 4064  df-pw 4137  df-sn 4154  df-pr 4156  df-tp 4158  df-op 4160  df-uni 4408  df-int 4446  df-iun 4492  df-br 4619  df-opab 4679  df-mpt 4680  df-tr 4718  df-eprel 4990  df-id 4994  df-po 5000  df-so 5001  df-fr 5038  df-se 5039  df-we 5040  df-xp 5085  df-rel 5086  df-cnv 5087  df-co 5088  df-dm 5089  df-rn 5090  df-res 5091  df-ima 5092  df-pred 5644  df-ord 5690  df-on 5691  df-suc 5693  df-iota 5815  df-fun 5854  df-fn 5855  df-f 5856  df-f1 5857  df-fo 5858  df-f1o 5859  df-fv 5860  df-isom 5861  df-riota 6571  df-ov 6613  df-oprab 6614  df-mpt2 6615  df-1st 7120  df-2nd 7121  df-wrecs 7359  df-smo 7395  df-recs 7420  df-er 7694  df-map 7811  df-en 7908  df-dom 7909  df-sdom 7910  df-card 8717  df-cf 8719  df-acn 8720
This theorem is referenced by:  cfsmo  9045
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