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Theorem dfrecs2 32182
Description: A quantifier-free definition of recs. (Contributed by Scott Fenton, 17-Jul-2020.)
Assertion
Ref Expression
dfrecs2 recs(𝐹) = (( Funs ∩ (Domain “ On)) ∖ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict))))

Proof of Theorem dfrecs2
Dummy variables 𝑓 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 dfrecs3 7514 . 2 recs(𝐹) = {𝑓 ∣ ∃𝑥 ∈ On (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))}
2 elin 3829 . . . . . . . . 9 (𝑓 ∈ ( Funs ∩ (Domain “ On)) ↔ (𝑓 Funs 𝑓 ∈ (Domain “ On)))
3 vex 3234 . . . . . . . . . . 11 𝑓 ∈ V
43elfuns 32147 . . . . . . . . . 10 (𝑓 Funs ↔ Fun 𝑓)
5 vex 3234 . . . . . . . . . . . . . 14 𝑥 ∈ V
65, 3brcnv 5337 . . . . . . . . . . . . 13 (𝑥Domain𝑓𝑓Domain𝑥)
73, 5brdomain 32165 . . . . . . . . . . . . 13 (𝑓Domain𝑥𝑥 = dom 𝑓)
86, 7bitri 264 . . . . . . . . . . . 12 (𝑥Domain𝑓𝑥 = dom 𝑓)
98rexbii 3070 . . . . . . . . . . 11 (∃𝑥 ∈ On 𝑥Domain𝑓 ↔ ∃𝑥 ∈ On 𝑥 = dom 𝑓)
103elima 5506 . . . . . . . . . . 11 (𝑓 ∈ (Domain “ On) ↔ ∃𝑥 ∈ On 𝑥Domain𝑓)
11 risset 3091 . . . . . . . . . . 11 (dom 𝑓 ∈ On ↔ ∃𝑥 ∈ On 𝑥 = dom 𝑓)
129, 10, 113bitr4i 292 . . . . . . . . . 10 (𝑓 ∈ (Domain “ On) ↔ dom 𝑓 ∈ On)
134, 12anbi12i 733 . . . . . . . . 9 ((𝑓 Funs 𝑓 ∈ (Domain “ On)) ↔ (Fun 𝑓 ∧ dom 𝑓 ∈ On))
142, 13bitri 264 . . . . . . . 8 (𝑓 ∈ ( Funs ∩ (Domain “ On)) ↔ (Fun 𝑓 ∧ dom 𝑓 ∈ On))
153eldm 5353 . . . . . . . . . . 11 (𝑓 ∈ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict))) ↔ ∃𝑦 𝑓(( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))𝑦)
16 brdif 4738 . . . . . . . . . . . . 13 (𝑓(( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))𝑦 ↔ (𝑓( E ∘ Domain)𝑦 ∧ ¬ 𝑓 Fix (Apply ∘ (FullFun𝐹 ∘ Restrict))𝑦))
17 vex 3234 . . . . . . . . . . . . . . . 16 𝑦 ∈ V
183, 17brco 5325 . . . . . . . . . . . . . . 15 (𝑓( E ∘ Domain)𝑦 ↔ ∃𝑥(𝑓Domain𝑥𝑥 E 𝑦))
197anbi1i 731 . . . . . . . . . . . . . . . . 17 ((𝑓Domain𝑥𝑥 E 𝑦) ↔ (𝑥 = dom 𝑓𝑥 E 𝑦))
2019exbii 1814 . . . . . . . . . . . . . . . 16 (∃𝑥(𝑓Domain𝑥𝑥 E 𝑦) ↔ ∃𝑥(𝑥 = dom 𝑓𝑥 E 𝑦))
213dmex 7141 . . . . . . . . . . . . . . . . 17 dom 𝑓 ∈ V
22 breq1 4688 . . . . . . . . . . . . . . . . 17 (𝑥 = dom 𝑓 → (𝑥 E 𝑦 ↔ dom 𝑓 E 𝑦))
2321, 22ceqsexv 3273 . . . . . . . . . . . . . . . 16 (∃𝑥(𝑥 = dom 𝑓𝑥 E 𝑦) ↔ dom 𝑓 E 𝑦)
2420, 23bitri 264 . . . . . . . . . . . . . . 15 (∃𝑥(𝑓Domain𝑥𝑥 E 𝑦) ↔ dom 𝑓 E 𝑦)
2521, 17brcnv 5337 . . . . . . . . . . . . . . . 16 (dom 𝑓 E 𝑦𝑦 E dom 𝑓)
2621epelc 5060 . . . . . . . . . . . . . . . 16 (𝑦 E dom 𝑓𝑦 ∈ dom 𝑓)
2725, 26bitri 264 . . . . . . . . . . . . . . 15 (dom 𝑓 E 𝑦𝑦 ∈ dom 𝑓)
2818, 24, 273bitri 286 . . . . . . . . . . . . . 14 (𝑓( E ∘ Domain)𝑦𝑦 ∈ dom 𝑓)
29 df-br 4686 . . . . . . . . . . . . . . . 16 (𝑓 Fix (Apply ∘ (FullFun𝐹 ∘ Restrict))𝑦 ↔ ⟨𝑓, 𝑦⟩ ∈ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))
30 opex 4962 . . . . . . . . . . . . . . . . 17 𝑓, 𝑦⟩ ∈ V
3130elfix 32135 . . . . . . . . . . . . . . . 16 (⟨𝑓, 𝑦⟩ ∈ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)) ↔ ⟨𝑓, 𝑦⟩(Apply ∘ (FullFun𝐹 ∘ Restrict))⟨𝑓, 𝑦⟩)
3230, 30brco 5325 . . . . . . . . . . . . . . . . 17 (⟨𝑓, 𝑦⟩(Apply ∘ (FullFun𝐹 ∘ Restrict))⟨𝑓, 𝑦⟩ ↔ ∃𝑥(⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥𝑥Apply⟨𝑓, 𝑦⟩))
33 ancom 465 . . . . . . . . . . . . . . . . . . . 20 ((⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥𝑥Apply⟨𝑓, 𝑦⟩) ↔ (𝑥Apply⟨𝑓, 𝑦⟩ ∧ ⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥))
345, 30brcnv 5337 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥Apply⟨𝑓, 𝑦⟩ ↔ ⟨𝑓, 𝑦⟩Apply𝑥)
353, 17, 5brapply 32170 . . . . . . . . . . . . . . . . . . . . . 22 (⟨𝑓, 𝑦⟩Apply𝑥𝑥 = (𝑓𝑦))
3634, 35bitri 264 . . . . . . . . . . . . . . . . . . . . 21 (𝑥Apply⟨𝑓, 𝑦⟩ ↔ 𝑥 = (𝑓𝑦))
3736anbi1i 731 . . . . . . . . . . . . . . . . . . . 20 ((𝑥Apply⟨𝑓, 𝑦⟩ ∧ ⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥) ↔ (𝑥 = (𝑓𝑦) ∧ ⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥))
3833, 37bitri 264 . . . . . . . . . . . . . . . . . . 19 ((⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥𝑥Apply⟨𝑓, 𝑦⟩) ↔ (𝑥 = (𝑓𝑦) ∧ ⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥))
3938exbii 1814 . . . . . . . . . . . . . . . . . 18 (∃𝑥(⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥𝑥Apply⟨𝑓, 𝑦⟩) ↔ ∃𝑥(𝑥 = (𝑓𝑦) ∧ ⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥))
40 fvex 6239 . . . . . . . . . . . . . . . . . . 19 (𝑓𝑦) ∈ V
41 breq2 4689 . . . . . . . . . . . . . . . . . . 19 (𝑥 = (𝑓𝑦) → (⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥 ↔ ⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)(𝑓𝑦)))
4240, 41ceqsexv 3273 . . . . . . . . . . . . . . . . . 18 (∃𝑥(𝑥 = (𝑓𝑦) ∧ ⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥) ↔ ⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)(𝑓𝑦))
4339, 42bitri 264 . . . . . . . . . . . . . . . . 17 (∃𝑥(⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)𝑥𝑥Apply⟨𝑓, 𝑦⟩) ↔ ⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)(𝑓𝑦))
4430, 40brco 5325 . . . . . . . . . . . . . . . . . 18 (⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)(𝑓𝑦) ↔ ∃𝑥(⟨𝑓, 𝑦⟩Restrict𝑥𝑥FullFun𝐹(𝑓𝑦)))
453, 17, 5brrestrict 32181 . . . . . . . . . . . . . . . . . . . . 21 (⟨𝑓, 𝑦⟩Restrict𝑥𝑥 = (𝑓𝑦))
4645anbi1i 731 . . . . . . . . . . . . . . . . . . . 20 ((⟨𝑓, 𝑦⟩Restrict𝑥𝑥FullFun𝐹(𝑓𝑦)) ↔ (𝑥 = (𝑓𝑦) ∧ 𝑥FullFun𝐹(𝑓𝑦)))
4746exbii 1814 . . . . . . . . . . . . . . . . . . 19 (∃𝑥(⟨𝑓, 𝑦⟩Restrict𝑥𝑥FullFun𝐹(𝑓𝑦)) ↔ ∃𝑥(𝑥 = (𝑓𝑦) ∧ 𝑥FullFun𝐹(𝑓𝑦)))
483resex 5478 . . . . . . . . . . . . . . . . . . . 20 (𝑓𝑦) ∈ V
49 breq1 4688 . . . . . . . . . . . . . . . . . . . 20 (𝑥 = (𝑓𝑦) → (𝑥FullFun𝐹(𝑓𝑦) ↔ (𝑓𝑦)FullFun𝐹(𝑓𝑦)))
5048, 49ceqsexv 3273 . . . . . . . . . . . . . . . . . . 19 (∃𝑥(𝑥 = (𝑓𝑦) ∧ 𝑥FullFun𝐹(𝑓𝑦)) ↔ (𝑓𝑦)FullFun𝐹(𝑓𝑦))
5147, 50bitri 264 . . . . . . . . . . . . . . . . . 18 (∃𝑥(⟨𝑓, 𝑦⟩Restrict𝑥𝑥FullFun𝐹(𝑓𝑦)) ↔ (𝑓𝑦)FullFun𝐹(𝑓𝑦))
5248, 40brfullfun 32180 . . . . . . . . . . . . . . . . . 18 ((𝑓𝑦)FullFun𝐹(𝑓𝑦) ↔ (𝑓𝑦) = (𝐹‘(𝑓𝑦)))
5344, 51, 523bitri 286 . . . . . . . . . . . . . . . . 17 (⟨𝑓, 𝑦⟩(FullFun𝐹 ∘ Restrict)(𝑓𝑦) ↔ (𝑓𝑦) = (𝐹‘(𝑓𝑦)))
5432, 43, 533bitri 286 . . . . . . . . . . . . . . . 16 (⟨𝑓, 𝑦⟩(Apply ∘ (FullFun𝐹 ∘ Restrict))⟨𝑓, 𝑦⟩ ↔ (𝑓𝑦) = (𝐹‘(𝑓𝑦)))
5529, 31, 543bitri 286 . . . . . . . . . . . . . . 15 (𝑓 Fix (Apply ∘ (FullFun𝐹 ∘ Restrict))𝑦 ↔ (𝑓𝑦) = (𝐹‘(𝑓𝑦)))
5655notbii 309 . . . . . . . . . . . . . 14 𝑓 Fix (Apply ∘ (FullFun𝐹 ∘ Restrict))𝑦 ↔ ¬ (𝑓𝑦) = (𝐹‘(𝑓𝑦)))
5728, 56anbi12i 733 . . . . . . . . . . . . 13 ((𝑓( E ∘ Domain)𝑦 ∧ ¬ 𝑓 Fix (Apply ∘ (FullFun𝐹 ∘ Restrict))𝑦) ↔ (𝑦 ∈ dom 𝑓 ∧ ¬ (𝑓𝑦) = (𝐹‘(𝑓𝑦))))
5816, 57bitri 264 . . . . . . . . . . . 12 (𝑓(( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))𝑦 ↔ (𝑦 ∈ dom 𝑓 ∧ ¬ (𝑓𝑦) = (𝐹‘(𝑓𝑦))))
5958exbii 1814 . . . . . . . . . . 11 (∃𝑦 𝑓(( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))𝑦 ↔ ∃𝑦(𝑦 ∈ dom 𝑓 ∧ ¬ (𝑓𝑦) = (𝐹‘(𝑓𝑦))))
6015, 59bitri 264 . . . . . . . . . 10 (𝑓 ∈ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict))) ↔ ∃𝑦(𝑦 ∈ dom 𝑓 ∧ ¬ (𝑓𝑦) = (𝐹‘(𝑓𝑦))))
61 df-rex 2947 . . . . . . . . . 10 (∃𝑦 ∈ dom 𝑓 ¬ (𝑓𝑦) = (𝐹‘(𝑓𝑦)) ↔ ∃𝑦(𝑦 ∈ dom 𝑓 ∧ ¬ (𝑓𝑦) = (𝐹‘(𝑓𝑦))))
62 rexnal 3024 . . . . . . . . . 10 (∃𝑦 ∈ dom 𝑓 ¬ (𝑓𝑦) = (𝐹‘(𝑓𝑦)) ↔ ¬ ∀𝑦 ∈ dom 𝑓(𝑓𝑦) = (𝐹‘(𝑓𝑦)))
6360, 61, 623bitr2ri 289 . . . . . . . . 9 (¬ ∀𝑦 ∈ dom 𝑓(𝑓𝑦) = (𝐹‘(𝑓𝑦)) ↔ 𝑓 ∈ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict))))
6463con1bii 345 . . . . . . . 8 𝑓 ∈ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict))) ↔ ∀𝑦 ∈ dom 𝑓(𝑓𝑦) = (𝐹‘(𝑓𝑦)))
6514, 64anbi12i 733 . . . . . . 7 ((𝑓 ∈ ( Funs ∩ (Domain “ On)) ∧ ¬ 𝑓 ∈ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))) ↔ ((Fun 𝑓 ∧ dom 𝑓 ∈ On) ∧ ∀𝑦 ∈ dom 𝑓(𝑓𝑦) = (𝐹‘(𝑓𝑦))))
66 anass 682 . . . . . . 7 (((Fun 𝑓 ∧ dom 𝑓 ∈ On) ∧ ∀𝑦 ∈ dom 𝑓(𝑓𝑦) = (𝐹‘(𝑓𝑦))) ↔ (Fun 𝑓 ∧ (dom 𝑓 ∈ On ∧ ∀𝑦 ∈ dom 𝑓(𝑓𝑦) = (𝐹‘(𝑓𝑦)))))
6765, 66bitri 264 . . . . . 6 ((𝑓 ∈ ( Funs ∩ (Domain “ On)) ∧ ¬ 𝑓 ∈ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))) ↔ (Fun 𝑓 ∧ (dom 𝑓 ∈ On ∧ ∀𝑦 ∈ dom 𝑓(𝑓𝑦) = (𝐹‘(𝑓𝑦)))))
68 eleq1 2718 . . . . . . . . 9 (𝑥 = dom 𝑓 → (𝑥 ∈ On ↔ dom 𝑓 ∈ On))
69 raleq 3168 . . . . . . . . 9 (𝑥 = dom 𝑓 → (∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)) ↔ ∀𝑦 ∈ dom 𝑓(𝑓𝑦) = (𝐹‘(𝑓𝑦))))
7068, 69anbi12d 747 . . . . . . . 8 (𝑥 = dom 𝑓 → ((𝑥 ∈ On ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦))) ↔ (dom 𝑓 ∈ On ∧ ∀𝑦 ∈ dom 𝑓(𝑓𝑦) = (𝐹‘(𝑓𝑦)))))
7170anbi2d 740 . . . . . . 7 (𝑥 = dom 𝑓 → ((Fun 𝑓 ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))) ↔ (Fun 𝑓 ∧ (dom 𝑓 ∈ On ∧ ∀𝑦 ∈ dom 𝑓(𝑓𝑦) = (𝐹‘(𝑓𝑦))))))
7221, 71ceqsexv 3273 . . . . . 6 (∃𝑥(𝑥 = dom 𝑓 ∧ (Fun 𝑓 ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦))))) ↔ (Fun 𝑓 ∧ (dom 𝑓 ∈ On ∧ ∀𝑦 ∈ dom 𝑓(𝑓𝑦) = (𝐹‘(𝑓𝑦)))))
73 df-fn 5929 . . . . . . . . . 10 (𝑓 Fn 𝑥 ↔ (Fun 𝑓 ∧ dom 𝑓 = 𝑥))
74 eqcom 2658 . . . . . . . . . . 11 (dom 𝑓 = 𝑥𝑥 = dom 𝑓)
7574anbi2i 730 . . . . . . . . . 10 ((Fun 𝑓 ∧ dom 𝑓 = 𝑥) ↔ (Fun 𝑓𝑥 = dom 𝑓))
76 ancom 465 . . . . . . . . . 10 ((Fun 𝑓𝑥 = dom 𝑓) ↔ (𝑥 = dom 𝑓 ∧ Fun 𝑓))
7773, 75, 763bitri 286 . . . . . . . . 9 (𝑓 Fn 𝑥 ↔ (𝑥 = dom 𝑓 ∧ Fun 𝑓))
7877anbi1i 731 . . . . . . . 8 ((𝑓 Fn 𝑥 ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))) ↔ ((𝑥 = dom 𝑓 ∧ Fun 𝑓) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))))
79 an12 855 . . . . . . . 8 ((𝑓 Fn 𝑥 ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))) ↔ (𝑥 ∈ On ∧ (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))))
80 anass 682 . . . . . . . 8 (((𝑥 = dom 𝑓 ∧ Fun 𝑓) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))) ↔ (𝑥 = dom 𝑓 ∧ (Fun 𝑓 ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦))))))
8178, 79, 803bitr3ri 291 . . . . . . 7 ((𝑥 = dom 𝑓 ∧ (Fun 𝑓 ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦))))) ↔ (𝑥 ∈ On ∧ (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))))
8281exbii 1814 . . . . . 6 (∃𝑥(𝑥 = dom 𝑓 ∧ (Fun 𝑓 ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦))))) ↔ ∃𝑥(𝑥 ∈ On ∧ (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))))
8367, 72, 823bitr2i 288 . . . . 5 ((𝑓 ∈ ( Funs ∩ (Domain “ On)) ∧ ¬ 𝑓 ∈ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))) ↔ ∃𝑥(𝑥 ∈ On ∧ (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))))
84 eldif 3617 . . . . 5 (𝑓 ∈ (( Funs ∩ (Domain “ On)) ∖ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))) ↔ (𝑓 ∈ ( Funs ∩ (Domain “ On)) ∧ ¬ 𝑓 ∈ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))))
85 df-rex 2947 . . . . 5 (∃𝑥 ∈ On (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦))) ↔ ∃𝑥(𝑥 ∈ On ∧ (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))))
8683, 84, 853bitr4i 292 . . . 4 (𝑓 ∈ (( Funs ∩ (Domain “ On)) ∖ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))) ↔ ∃𝑥 ∈ On (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦))))
8786abbi2i 2767 . . 3 (( Funs ∩ (Domain “ On)) ∖ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))) = {𝑓 ∣ ∃𝑥 ∈ On (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))}
8887unieqi 4477 . 2 (( Funs ∩ (Domain “ On)) ∖ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict)))) = {𝑓 ∣ ∃𝑥 ∈ On (𝑓 Fn 𝑥 ∧ ∀𝑦𝑥 (𝑓𝑦) = (𝐹‘(𝑓𝑦)))}
891, 88eqtr4i 2676 1 recs(𝐹) = (( Funs ∩ (Domain “ On)) ∖ dom (( E ∘ Domain) ∖ Fix (Apply ∘ (FullFun𝐹 ∘ Restrict))))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wa 383   = wceq 1523  wex 1744  wcel 2030  {cab 2637  wral 2941  wrex 2942  cdif 3604  cin 3606  cop 4216   cuni 4468   class class class wbr 4685   E cep 5057  ccnv 5142  dom cdm 5143  cres 5145  cima 5146  ccom 5147  Oncon0 5761  Fun wfun 5920   Fn wfn 5921  cfv 5926  recscrecs 7512   Fix cfix 32067   Funs cfuns 32069  Domaincdomain 32075  Applycapply 32077  FullFuncfullfn 32082  Restrictcrestrict 32083
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-8 2032  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-sep 4814  ax-nul 4822  ax-pow 4873  ax-pr 4936  ax-un 6991
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1055  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ne 2824  df-ral 2946  df-rex 2947  df-rab 2950  df-v 3233  df-sbc 3469  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-pss 3623  df-symdif 3877  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-tp 4215  df-op 4217  df-uni 4469  df-br 4686  df-opab 4746  df-mpt 4763  df-tr 4786  df-id 5053  df-eprel 5058  df-po 5064  df-so 5065  df-fr 5102  df-we 5104  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-pred 5718  df-ord 5764  df-on 5765  df-iota 5889  df-fun 5928  df-fn 5929  df-f 5930  df-fo 5932  df-fv 5934  df-1st 7210  df-2nd 7211  df-wrecs 7452  df-recs 7513  df-txp 32086  df-pprod 32087  df-bigcup 32090  df-fix 32091  df-funs 32093  df-singleton 32094  df-singles 32095  df-image 32096  df-cart 32097  df-img 32098  df-domain 32099  df-range 32100  df-cap 32102  df-restrict 32103  df-apply 32105  df-funpart 32106  df-fullfun 32107
This theorem is referenced by: (None)
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