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Theorem tfrexlem 5978
 Description: The transfinite recursion function is set-like if the input is. (Contributed by Mario Carneiro, 3-Jul-2019.)
Hypotheses
Ref Expression
tfrexlem.1 𝐴 = {𝑓 ∣ ∃𝑥 ∈ On (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))}
tfrexlem.2 (𝜑 → ∀𝑥(Fun 𝐹 ∧ (𝐹𝑥) ∈ V))
Assertion
Ref Expression
tfrexlem ((𝜑𝐶𝑉) → (recs(𝐹)‘𝐶) ∈ V)
Distinct variable groups:   𝑥,𝑓,𝑦,𝐴   𝑓,𝐹,𝑥,𝑦
Allowed substitution hints:   𝜑(𝑥,𝑦,𝑓)   𝐶(𝑥,𝑦,𝑓)   𝑉(𝑥,𝑦,𝑓)

Proof of Theorem tfrexlem
Dummy variables 𝑒 𝑔 𝑢 𝑣 𝑡 𝑤 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 fveq2 5205 . . . . 5 (𝑧 = 𝐶 → (recs(𝐹)‘𝑧) = (recs(𝐹)‘𝐶))
21eleq1d 2122 . . . 4 (𝑧 = 𝐶 → ((recs(𝐹)‘𝑧) ∈ V ↔ (recs(𝐹)‘𝐶) ∈ V))
32imbi2d 223 . . 3 (𝑧 = 𝐶 → ((𝜑 → (recs(𝐹)‘𝑧) ∈ V) ↔ (𝜑 → (recs(𝐹)‘𝐶) ∈ V)))
4 inss2 3185 . . . . . . 7 (suc suc 𝑧 ∩ On) ⊆ On
5 ssorduni 4240 . . . . . . 7 ((suc suc 𝑧 ∩ On) ⊆ On → Ord (suc suc 𝑧 ∩ On))
64, 5ax-mp 7 . . . . . 6 Ord (suc suc 𝑧 ∩ On)
7 vex 2577 . . . . . . . . . 10 𝑧 ∈ V
87sucex 4252 . . . . . . . . 9 suc 𝑧 ∈ V
98sucex 4252 . . . . . . . 8 suc suc 𝑧 ∈ V
109inex1 3918 . . . . . . 7 (suc suc 𝑧 ∩ On) ∈ V
1110uniex 4201 . . . . . 6 (suc suc 𝑧 ∩ On) ∈ V
12 elon2 4140 . . . . . 6 ( (suc suc 𝑧 ∩ On) ∈ On ↔ (Ord (suc suc 𝑧 ∩ On) ∧ (suc suc 𝑧 ∩ On) ∈ V))
136, 11, 12mpbir2an 860 . . . . 5 (suc suc 𝑧 ∩ On) ∈ On
14 tfrexlem.1 . . . . . . 7 𝐴 = {𝑓 ∣ ∃𝑥 ∈ On (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))}
1514tfrlem3 5956 . . . . . 6 𝐴 = {𝑣 ∣ ∃𝑧 ∈ On (𝑣 Fn 𝑧 ∧ ∀𝑢𝑧 (𝑣𝑢) = (𝐹‘(𝑣𝑢)))}
16 tfrexlem.2 . . . . . . 7 (𝜑 → ∀𝑥(Fun 𝐹 ∧ (𝐹𝑥) ∈ V))
17 fveq2 5205 . . . . . . . . . 10 (𝑥 = 𝑧 → (𝐹𝑥) = (𝐹𝑧))
1817eleq1d 2122 . . . . . . . . 9 (𝑥 = 𝑧 → ((𝐹𝑥) ∈ V ↔ (𝐹𝑧) ∈ V))
1918anbi2d 445 . . . . . . . 8 (𝑥 = 𝑧 → ((Fun 𝐹 ∧ (𝐹𝑥) ∈ V) ↔ (Fun 𝐹 ∧ (𝐹𝑧) ∈ V)))
2019cbvalv 1810 . . . . . . 7 (∀𝑥(Fun 𝐹 ∧ (𝐹𝑥) ∈ V) ↔ ∀𝑧(Fun 𝐹 ∧ (𝐹𝑧) ∈ V))
2116, 20sylib 131 . . . . . 6 (𝜑 → ∀𝑧(Fun 𝐹 ∧ (𝐹𝑧) ∈ V))
2215, 21tfrlemi1 5976 . . . . 5 ((𝜑 (suc suc 𝑧 ∩ On) ∈ On) → ∃𝑔(𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))))
2313, 22mpan2 409 . . . 4 (𝜑 → ∃𝑔(𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))))
2415recsfval 5961 . . . . . . . . . . 11 recs(𝐹) = 𝐴
2524breqi 3797 . . . . . . . . . 10 (𝑧recs(𝐹)𝑦𝑧 𝐴𝑦)
26 df-br 3792 . . . . . . . . . 10 (𝑧 𝐴𝑦 ↔ ⟨𝑧, 𝑦⟩ ∈ 𝐴)
27 eluni 3610 . . . . . . . . . 10 (⟨𝑧, 𝑦⟩ ∈ 𝐴 ↔ ∃(⟨𝑧, 𝑦⟩ ∈ 𝐴))
2825, 26, 273bitri 199 . . . . . . . . 9 (𝑧recs(𝐹)𝑦 ↔ ∃(⟨𝑧, 𝑦⟩ ∈ 𝐴))
297sucid 4181 . . . . . . . . . . . . . . . . 17 𝑧 ∈ suc 𝑧
30 simpr 107 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((⟨𝑧, 𝑦⟩ ∈ 𝐴) → 𝐴)
31 vex 2577 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ∈ V
3214, 31tfrlem3a 5955 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝐴 ↔ ∃𝑡 ∈ On ( Fn 𝑡 ∧ ∀𝑒𝑡 (𝑒) = (𝐹‘(𝑒))))
3330, 32sylib 131 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((⟨𝑧, 𝑦⟩ ∈ 𝐴) → ∃𝑡 ∈ On ( Fn 𝑡 ∧ ∀𝑒𝑡 (𝑒) = (𝐹‘(𝑒))))
34 simprl 491 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((⟨𝑧, 𝑦⟩ ∈ 𝐴) ∧ (𝑡 ∈ On ∧ ( Fn 𝑡 ∧ ∀𝑒𝑡 (𝑒) = (𝐹‘(𝑒))))) → 𝑡 ∈ On)
35 simprrl 499 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((⟨𝑧, 𝑦⟩ ∈ 𝐴) ∧ (𝑡 ∈ On ∧ ( Fn 𝑡 ∧ ∀𝑒𝑡 (𝑒) = (𝐹‘(𝑒))))) → Fn 𝑡)
36 simpll 489 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((⟨𝑧, 𝑦⟩ ∈ 𝐴) ∧ (𝑡 ∈ On ∧ ( Fn 𝑡 ∧ ∀𝑒𝑡 (𝑒) = (𝐹‘(𝑒))))) → ⟨𝑧, 𝑦⟩ ∈ )
37 fnop 5029 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (( Fn 𝑡 ∧ ⟨𝑧, 𝑦⟩ ∈ ) → 𝑧𝑡)
3835, 36, 37syl2anc 397 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((⟨𝑧, 𝑦⟩ ∈ 𝐴) ∧ (𝑡 ∈ On ∧ ( Fn 𝑡 ∧ ∀𝑒𝑡 (𝑒) = (𝐹‘(𝑒))))) → 𝑧𝑡)
39 onelon 4148 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑡 ∈ On ∧ 𝑧𝑡) → 𝑧 ∈ On)
4034, 38, 39syl2anc 397 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((⟨𝑧, 𝑦⟩ ∈ 𝐴) ∧ (𝑡 ∈ On ∧ ( Fn 𝑡 ∧ ∀𝑒𝑡 (𝑒) = (𝐹‘(𝑒))))) → 𝑧 ∈ On)
4133, 40rexlimddv 2454 . . . . . . . . . . . . . . . . . . . . . . . 24 ((⟨𝑧, 𝑦⟩ ∈ 𝐴) → 𝑧 ∈ On)
4241adantl 266 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → 𝑧 ∈ On)
43 suceloni 4254 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑧 ∈ On → suc 𝑧 ∈ On)
4442, 43syl 14 . . . . . . . . . . . . . . . . . . . . . 22 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → suc 𝑧 ∈ On)
45 suceloni 4254 . . . . . . . . . . . . . . . . . . . . . 22 (suc 𝑧 ∈ On → suc suc 𝑧 ∈ On)
4644, 45syl 14 . . . . . . . . . . . . . . . . . . . . 21 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → suc suc 𝑧 ∈ On)
47 onss 4246 . . . . . . . . . . . . . . . . . . . . 21 (suc suc 𝑧 ∈ On → suc suc 𝑧 ⊆ On)
4846, 47syl 14 . . . . . . . . . . . . . . . . . . . 20 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → suc suc 𝑧 ⊆ On)
49 df-ss 2958 . . . . . . . . . . . . . . . . . . . 20 (suc suc 𝑧 ⊆ On ↔ (suc suc 𝑧 ∩ On) = suc suc 𝑧)
5048, 49sylib 131 . . . . . . . . . . . . . . . . . . 19 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → (suc suc 𝑧 ∩ On) = suc suc 𝑧)
5150unieqd 3618 . . . . . . . . . . . . . . . . . 18 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → (suc suc 𝑧 ∩ On) = suc suc 𝑧)
52 eloni 4139 . . . . . . . . . . . . . . . . . . . 20 (suc 𝑧 ∈ On → Ord suc 𝑧)
53 ordtr 4142 . . . . . . . . . . . . . . . . . . . 20 (Ord suc 𝑧 → Tr suc 𝑧)
5444, 52, 533syl 17 . . . . . . . . . . . . . . . . . . 19 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → Tr suc 𝑧)
558unisuc 4177 . . . . . . . . . . . . . . . . . . 19 (Tr suc 𝑧 suc suc 𝑧 = suc 𝑧)
5654, 55sylib 131 . . . . . . . . . . . . . . . . . 18 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → suc suc 𝑧 = suc 𝑧)
5751, 56eqtrd 2088 . . . . . . . . . . . . . . . . 17 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → (suc suc 𝑧 ∩ On) = suc 𝑧)
5829, 57syl5eleqr 2143 . . . . . . . . . . . . . . . 16 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → 𝑧 (suc suc 𝑧 ∩ On))
59 fndm 5025 . . . . . . . . . . . . . . . . 17 (𝑔 Fn (suc suc 𝑧 ∩ On) → dom 𝑔 = (suc suc 𝑧 ∩ On))
6059ad2antrr 465 . . . . . . . . . . . . . . . 16 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → dom 𝑔 = (suc suc 𝑧 ∩ On))
6158, 60eleqtrrd 2133 . . . . . . . . . . . . . . 15 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → 𝑧 ∈ dom 𝑔)
627eldm 4559 . . . . . . . . . . . . . . 15 (𝑧 ∈ dom 𝑔 ↔ ∃𝑥 𝑧𝑔𝑥)
6361, 62sylib 131 . . . . . . . . . . . . . 14 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → ∃𝑥 𝑧𝑔𝑥)
64 simpr 107 . . . . . . . . . . . . . . 15 ((((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) ∧ 𝑧𝑔𝑥) → 𝑧𝑔𝑥)
65 fneq2 5015 . . . . . . . . . . . . . . . . . . . . 21 (𝑣 = (suc suc 𝑧 ∩ On) → (𝑔 Fn 𝑣𝑔 Fn (suc suc 𝑧 ∩ On)))
66 raleq 2522 . . . . . . . . . . . . . . . . . . . . 21 (𝑣 = (suc suc 𝑧 ∩ On) → (∀𝑤𝑣 (𝑔𝑤) = (𝐹‘(𝑔𝑤)) ↔ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))))
6765, 66anbi12d 450 . . . . . . . . . . . . . . . . . . . 20 (𝑣 = (suc suc 𝑧 ∩ On) → ((𝑔 Fn 𝑣 ∧ ∀𝑤𝑣 (𝑔𝑤) = (𝐹‘(𝑔𝑤))) ↔ (𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤)))))
6867rspcev 2673 . . . . . . . . . . . . . . . . . . 19 (( (suc suc 𝑧 ∩ On) ∈ On ∧ (𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤)))) → ∃𝑣 ∈ On (𝑔 Fn 𝑣 ∧ ∀𝑤𝑣 (𝑔𝑤) = (𝐹‘(𝑔𝑤))))
6913, 68mpan 408 . . . . . . . . . . . . . . . . . 18 ((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) → ∃𝑣 ∈ On (𝑔 Fn 𝑣 ∧ ∀𝑤𝑣 (𝑔𝑤) = (𝐹‘(𝑔𝑤))))
70 vex 2577 . . . . . . . . . . . . . . . . . . 19 𝑔 ∈ V
7114, 70tfrlem3a 5955 . . . . . . . . . . . . . . . . . 18 (𝑔𝐴 ↔ ∃𝑣 ∈ On (𝑔 Fn 𝑣 ∧ ∀𝑤𝑣 (𝑔𝑤) = (𝐹‘(𝑔𝑤))))
7269, 71sylibr 141 . . . . . . . . . . . . . . . . 17 ((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) → 𝑔𝐴)
7372ad2antrr 465 . . . . . . . . . . . . . . . 16 ((((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) ∧ 𝑧𝑔𝑥) → 𝑔𝐴)
74 simplrr 496 . . . . . . . . . . . . . . . 16 ((((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) ∧ 𝑧𝑔𝑥) → 𝐴)
75 simplrl 495 . . . . . . . . . . . . . . . . 17 ((((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) ∧ 𝑧𝑔𝑥) → ⟨𝑧, 𝑦⟩ ∈ )
76 df-br 3792 . . . . . . . . . . . . . . . . 17 (𝑧𝑦 ↔ ⟨𝑧, 𝑦⟩ ∈ )
7775, 76sylibr 141 . . . . . . . . . . . . . . . 16 ((((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) ∧ 𝑧𝑔𝑥) → 𝑧𝑦)
7815tfrlem5 5960 . . . . . . . . . . . . . . . . 17 ((𝑔𝐴𝐴) → ((𝑧𝑔𝑥𝑧𝑦) → 𝑥 = 𝑦))
7978imp 119 . . . . . . . . . . . . . . . 16 (((𝑔𝐴𝐴) ∧ (𝑧𝑔𝑥𝑧𝑦)) → 𝑥 = 𝑦)
8073, 74, 64, 77, 79syl22anc 1147 . . . . . . . . . . . . . . 15 ((((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) ∧ 𝑧𝑔𝑥) → 𝑥 = 𝑦)
8164, 80breqtrd 3815 . . . . . . . . . . . . . 14 ((((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) ∧ 𝑧𝑔𝑥) → 𝑧𝑔𝑦)
8263, 81exlimddv 1794 . . . . . . . . . . . . 13 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → 𝑧𝑔𝑦)
83 vex 2577 . . . . . . . . . . . . . 14 𝑦 ∈ V
847, 83brelrn 4594 . . . . . . . . . . . . 13 (𝑧𝑔𝑦𝑦 ∈ ran 𝑔)
8582, 84syl 14 . . . . . . . . . . . 12 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → 𝑦 ∈ ran 𝑔)
86 elssuni 3635 . . . . . . . . . . . 12 (𝑦 ∈ ran 𝑔𝑦 ran 𝑔)
8785, 86syl 14 . . . . . . . . . . 11 (((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) ∧ (⟨𝑧, 𝑦⟩ ∈ 𝐴)) → 𝑦 ran 𝑔)
8887ex 112 . . . . . . . . . 10 ((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) → ((⟨𝑧, 𝑦⟩ ∈ 𝐴) → 𝑦 ran 𝑔))
8988exlimdv 1716 . . . . . . . . 9 ((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) → (∃(⟨𝑧, 𝑦⟩ ∈ 𝐴) → 𝑦 ran 𝑔))
9028, 89syl5bi 145 . . . . . . . 8 ((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) → (𝑧recs(𝐹)𝑦𝑦 ran 𝑔))
9190alrimiv 1770 . . . . . . 7 ((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) → ∀𝑦(𝑧recs(𝐹)𝑦𝑦 ran 𝑔))
92 fvss 5216 . . . . . . 7 (∀𝑦(𝑧recs(𝐹)𝑦𝑦 ran 𝑔) → (recs(𝐹)‘𝑧) ⊆ ran 𝑔)
9391, 92syl 14 . . . . . 6 ((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) → (recs(𝐹)‘𝑧) ⊆ ran 𝑔)
9470rnex 4626 . . . . . . . 8 ran 𝑔 ∈ V
9594uniex 4201 . . . . . . 7 ran 𝑔 ∈ V
9695ssex 3921 . . . . . 6 ((recs(𝐹)‘𝑧) ⊆ ran 𝑔 → (recs(𝐹)‘𝑧) ∈ V)
9793, 96syl 14 . . . . 5 ((𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) → (recs(𝐹)‘𝑧) ∈ V)
9897exlimiv 1505 . . . 4 (∃𝑔(𝑔 Fn (suc suc 𝑧 ∩ On) ∧ ∀𝑤 (suc suc 𝑧 ∩ On)(𝑔𝑤) = (𝐹‘(𝑔𝑤))) → (recs(𝐹)‘𝑧) ∈ V)
9923, 98syl 14 . . 3 (𝜑 → (recs(𝐹)‘𝑧) ∈ V)
1003, 99vtoclg 2630 . 2 (𝐶𝑉 → (𝜑 → (recs(𝐹)‘𝐶) ∈ V))
101100impcom 120 1 ((𝜑𝐶𝑉) → (recs(𝐹)‘𝐶) ∈ V)
 Colors of variables: wff set class Syntax hints:   → wi 4   ∧ wa 101  ∀wal 1257   = wceq 1259  ∃wex 1397   ∈ wcel 1409  {cab 2042  ∀wral 2323  ∃wrex 2324  Vcvv 2574   ∩ cin 2943   ⊆ wss 2944  ⟨cop 3405  ∪ cuni 3607   class class class wbr 3791  Tr wtr 3881  Ord word 4126  Oncon0 4127  suc csuc 4129  dom cdm 4372  ran crn 4373   ↾ cres 4374  Fun wfun 4923   Fn wfn 4924  ‘cfv 4929  recscrecs 5949 This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 103  ax-ia2 104  ax-ia3 105  ax-in1 554  ax-in2 555  ax-io 640  ax-5 1352  ax-7 1353  ax-gen 1354  ax-ie1 1398  ax-ie2 1399  ax-8 1411  ax-10 1412  ax-11 1413  ax-i12 1414  ax-bndl 1415  ax-4 1416  ax-13 1420  ax-14 1421  ax-17 1435  ax-i9 1439  ax-ial 1443  ax-i5r 1444  ax-ext 2038  ax-coll 3899  ax-sep 3902  ax-pow 3954  ax-pr 3971  ax-un 4197  ax-setind 4289 This theorem depends on definitions:  df-bi 114  df-3an 898  df-tru 1262  df-fal 1265  df-nf 1366  df-sb 1662  df-eu 1919  df-mo 1920  df-clab 2043  df-cleq 2049  df-clel 2052  df-nfc 2183  df-ne 2221  df-ral 2328  df-rex 2329  df-reu 2330  df-rab 2332  df-v 2576  df-sbc 2787  df-csb 2880  df-dif 2947  df-un 2949  df-in 2951  df-ss 2958  df-nul 3252  df-pw 3388  df-sn 3408  df-pr 3409  df-op 3411  df-uni 3608  df-iun 3686  df-br 3792  df-opab 3846  df-mpt 3847  df-tr 3882  df-id 4057  df-iord 4130  df-on 4132  df-suc 4135  df-xp 4378  df-rel 4379  df-cnv 4380  df-co 4381  df-dm 4382  df-rn 4383  df-res 4384  df-ima 4385  df-iota 4894  df-fun 4931  df-fn 4932  df-f 4933  df-f1 4934  df-fo 4935  df-f1o 4936  df-fv 4937  df-recs 5950 This theorem is referenced by:  tfrex  5984
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