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Theorem foresf1o 30271
Description: From a surjective function, *choose* a subset of the domain, such that the restricted function is bijective. (Contributed by Thierry Arnoux, 27-Jan-2020.)
Assertion
Ref Expression
foresf1o ((𝐴𝑉𝐹:𝐴onto𝐵) → ∃𝑥 ∈ 𝒫 𝐴(𝐹𝑥):𝑥1-1-onto𝐵)
Distinct variable groups:   𝑥,𝐴   𝑥,𝐵   𝑥,𝐹
Allowed substitution hint:   𝑉(𝑥)

Proof of Theorem foresf1o
Dummy variables 𝑔 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 fornex 7643 . . . 4 (𝐴𝑉 → (𝐹:𝐴onto𝐵𝐵 ∈ V))
21imp 410 . . 3 ((𝐴𝑉𝐹:𝐴onto𝐵) → 𝐵 ∈ V)
3 foelrn 6854 . . . . . 6 ((𝐹:𝐴onto𝐵𝑦𝐵) → ∃𝑧𝐴 𝑦 = (𝐹𝑧))
4 fofn 6574 . . . . . . . . . 10 (𝐹:𝐴onto𝐵𝐹 Fn 𝐴)
5 eqcom 2829 . . . . . . . . . . 11 ((𝐹𝑧) = 𝑦𝑦 = (𝐹𝑧))
6 fniniseg 6812 . . . . . . . . . . . . 13 (𝐹 Fn 𝐴 → (𝑧 ∈ (𝐹 “ {𝑦}) ↔ (𝑧𝐴 ∧ (𝐹𝑧) = 𝑦)))
76biimpar 481 . . . . . . . . . . . 12 ((𝐹 Fn 𝐴 ∧ (𝑧𝐴 ∧ (𝐹𝑧) = 𝑦)) → 𝑧 ∈ (𝐹 “ {𝑦}))
87anassrs 471 . . . . . . . . . . 11 (((𝐹 Fn 𝐴𝑧𝐴) ∧ (𝐹𝑧) = 𝑦) → 𝑧 ∈ (𝐹 “ {𝑦}))
95, 8sylan2br 597 . . . . . . . . . 10 (((𝐹 Fn 𝐴𝑧𝐴) ∧ 𝑦 = (𝐹𝑧)) → 𝑧 ∈ (𝐹 “ {𝑦}))
104, 9sylanl1 679 . . . . . . . . 9 (((𝐹:𝐴onto𝐵𝑧𝐴) ∧ 𝑦 = (𝐹𝑧)) → 𝑧 ∈ (𝐹 “ {𝑦}))
1110ex 416 . . . . . . . 8 ((𝐹:𝐴onto𝐵𝑧𝐴) → (𝑦 = (𝐹𝑧) → 𝑧 ∈ (𝐹 “ {𝑦})))
1211reximdva 3260 . . . . . . 7 (𝐹:𝐴onto𝐵 → (∃𝑧𝐴 𝑦 = (𝐹𝑧) → ∃𝑧𝐴 𝑧 ∈ (𝐹 “ {𝑦})))
1312adantr 484 . . . . . 6 ((𝐹:𝐴onto𝐵𝑦𝐵) → (∃𝑧𝐴 𝑦 = (𝐹𝑧) → ∃𝑧𝐴 𝑧 ∈ (𝐹 “ {𝑦})))
143, 13mpd 15 . . . . 5 ((𝐹:𝐴onto𝐵𝑦𝐵) → ∃𝑧𝐴 𝑧 ∈ (𝐹 “ {𝑦}))
1514adantll 713 . . . 4 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ 𝑦𝐵) → ∃𝑧𝐴 𝑧 ∈ (𝐹 “ {𝑦}))
1615ralrimiva 3174 . . 3 ((𝐴𝑉𝐹:𝐴onto𝐵) → ∀𝑦𝐵𝑧𝐴 𝑧 ∈ (𝐹 “ {𝑦}))
17 eleq1 2901 . . . 4 (𝑧 = (𝑔𝑦) → (𝑧 ∈ (𝐹 “ {𝑦}) ↔ (𝑔𝑦) ∈ (𝐹 “ {𝑦})))
1817ac6sg 9899 . . 3 (𝐵 ∈ V → (∀𝑦𝐵𝑧𝐴 𝑧 ∈ (𝐹 “ {𝑦}) → ∃𝑔(𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))))
192, 16, 18sylc 65 . 2 ((𝐴𝑉𝐹:𝐴onto𝐵) → ∃𝑔(𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦})))
20 frn 6500 . . . . 5 (𝑔:𝐵𝐴 → ran 𝑔𝐴)
2120ad2antrl 727 . . . 4 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) → ran 𝑔𝐴)
22 vex 3472 . . . . . 6 𝑔 ∈ V
2322rnex 7603 . . . . 5 ran 𝑔 ∈ V
2423elpw 4515 . . . 4 (ran 𝑔 ∈ 𝒫 𝐴 ↔ ran 𝑔𝐴)
2521, 24sylibr 237 . . 3 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) → ran 𝑔 ∈ 𝒫 𝐴)
26 fof 6572 . . . . . 6 (𝐹:𝐴onto𝐵𝐹:𝐴𝐵)
2726ad2antlr 726 . . . . 5 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) → 𝐹:𝐴𝐵)
2827, 21fssresd 6526 . . . 4 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) → (𝐹 ↾ ran 𝑔):ran 𝑔𝐵)
29 ffn 6494 . . . . . 6 (𝑔:𝐵𝐴𝑔 Fn 𝐵)
3029ad2antrl 727 . . . . 5 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) → 𝑔 Fn 𝐵)
31 dffn3 6506 . . . . 5 (𝑔 Fn 𝐵𝑔:𝐵⟶ran 𝑔)
3230, 31sylib 221 . . . 4 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) → 𝑔:𝐵⟶ran 𝑔)
33 fvres 6671 . . . . . . . 8 (𝑧 ∈ ran 𝑔 → ((𝐹 ↾ ran 𝑔)‘𝑧) = (𝐹𝑧))
3433adantl 485 . . . . . . 7 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) → ((𝐹 ↾ ran 𝑔)‘𝑧) = (𝐹𝑧))
3534fveq2d 6656 . . . . . 6 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) → (𝑔‘((𝐹 ↾ ran 𝑔)‘𝑧)) = (𝑔‘(𝐹𝑧)))
36 nfv 1915 . . . . . . . . 9 𝑦(𝐴𝑉𝐹:𝐴onto𝐵)
37 nfv 1915 . . . . . . . . . 10 𝑦 𝑔:𝐵𝐴
38 nfra1 3208 . . . . . . . . . 10 𝑦𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦})
3937, 38nfan 1900 . . . . . . . . 9 𝑦(𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))
4036, 39nfan 1900 . . . . . . . 8 𝑦((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦})))
41 nfv 1915 . . . . . . . 8 𝑦 𝑧 ∈ ran 𝑔
4240, 41nfan 1900 . . . . . . 7 𝑦(((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔)
43 simpr 488 . . . . . . . . . . 11 ((((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) ∧ 𝑦𝐵) ∧ (𝑔𝑦) = 𝑧) → (𝑔𝑦) = 𝑧)
4443fveq2d 6656 . . . . . . . . . 10 ((((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) ∧ 𝑦𝐵) ∧ (𝑔𝑦) = 𝑧) → (𝐹‘(𝑔𝑦)) = (𝐹𝑧))
454ad5antlr 734 . . . . . . . . . . 11 ((((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) ∧ 𝑦𝐵) ∧ (𝑔𝑦) = 𝑧) → 𝐹 Fn 𝐴)
46 simplrr 777 . . . . . . . . . . . . 13 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) → ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))
4746ad2antrr 725 . . . . . . . . . . . 12 ((((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) ∧ 𝑦𝐵) ∧ (𝑔𝑦) = 𝑧) → ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))
48 simplr 768 . . . . . . . . . . . 12 ((((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) ∧ 𝑦𝐵) ∧ (𝑔𝑦) = 𝑧) → 𝑦𝐵)
49 rspa 3196 . . . . . . . . . . . 12 ((∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}) ∧ 𝑦𝐵) → (𝑔𝑦) ∈ (𝐹 “ {𝑦}))
5047, 48, 49syl2anc 587 . . . . . . . . . . 11 ((((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) ∧ 𝑦𝐵) ∧ (𝑔𝑦) = 𝑧) → (𝑔𝑦) ∈ (𝐹 “ {𝑦}))
51 fniniseg 6812 . . . . . . . . . . . 12 (𝐹 Fn 𝐴 → ((𝑔𝑦) ∈ (𝐹 “ {𝑦}) ↔ ((𝑔𝑦) ∈ 𝐴 ∧ (𝐹‘(𝑔𝑦)) = 𝑦)))
5251simplbda 503 . . . . . . . . . . 11 ((𝐹 Fn 𝐴 ∧ (𝑔𝑦) ∈ (𝐹 “ {𝑦})) → (𝐹‘(𝑔𝑦)) = 𝑦)
5345, 50, 52syl2anc 587 . . . . . . . . . 10 ((((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) ∧ 𝑦𝐵) ∧ (𝑔𝑦) = 𝑧) → (𝐹‘(𝑔𝑦)) = 𝑦)
5444, 53eqtr3d 2859 . . . . . . . . 9 ((((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) ∧ 𝑦𝐵) ∧ (𝑔𝑦) = 𝑧) → (𝐹𝑧) = 𝑦)
5554fveq2d 6656 . . . . . . . 8 ((((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) ∧ 𝑦𝐵) ∧ (𝑔𝑦) = 𝑧) → (𝑔‘(𝐹𝑧)) = (𝑔𝑦))
5655, 43eqtrd 2857 . . . . . . 7 ((((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) ∧ 𝑦𝐵) ∧ (𝑔𝑦) = 𝑧) → (𝑔‘(𝐹𝑧)) = 𝑧)
57 fvelrnb 6708 . . . . . . . . 9 (𝑔 Fn 𝐵 → (𝑧 ∈ ran 𝑔 ↔ ∃𝑦𝐵 (𝑔𝑦) = 𝑧))
5857biimpa 480 . . . . . . . 8 ((𝑔 Fn 𝐵𝑧 ∈ ran 𝑔) → ∃𝑦𝐵 (𝑔𝑦) = 𝑧)
5930, 58sylan 583 . . . . . . 7 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) → ∃𝑦𝐵 (𝑔𝑦) = 𝑧)
6042, 56, 59r19.29af 3316 . . . . . 6 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) → (𝑔‘(𝐹𝑧)) = 𝑧)
6135, 60eqtrd 2857 . . . . 5 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑧 ∈ ran 𝑔) → (𝑔‘((𝐹 ↾ ran 𝑔)‘𝑧)) = 𝑧)
6261ralrimiva 3174 . . . 4 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) → ∀𝑧 ∈ ran 𝑔(𝑔‘((𝐹 ↾ ran 𝑔)‘𝑧)) = 𝑧)
6332ffvelrnda 6833 . . . . . . . 8 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑦𝐵) → (𝑔𝑦) ∈ ran 𝑔)
64 fvres 6671 . . . . . . . 8 ((𝑔𝑦) ∈ ran 𝑔 → ((𝐹 ↾ ran 𝑔)‘(𝑔𝑦)) = (𝐹‘(𝑔𝑦)))
6563, 64syl 17 . . . . . . 7 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑦𝐵) → ((𝐹 ↾ ran 𝑔)‘(𝑔𝑦)) = (𝐹‘(𝑔𝑦)))
664ad3antlr 730 . . . . . . . 8 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑦𝐵) → 𝐹 Fn 𝐴)
67 simplrr 777 . . . . . . . . 9 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑦𝐵) → ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))
68 simpr 488 . . . . . . . . 9 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑦𝐵) → 𝑦𝐵)
6967, 68, 49syl2anc 587 . . . . . . . 8 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑦𝐵) → (𝑔𝑦) ∈ (𝐹 “ {𝑦}))
7066, 69, 52syl2anc 587 . . . . . . 7 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑦𝐵) → (𝐹‘(𝑔𝑦)) = 𝑦)
7165, 70eqtrd 2857 . . . . . 6 ((((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) ∧ 𝑦𝐵) → ((𝐹 ↾ ran 𝑔)‘(𝑔𝑦)) = 𝑦)
7271ex 416 . . . . 5 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) → (𝑦𝐵 → ((𝐹 ↾ ran 𝑔)‘(𝑔𝑦)) = 𝑦))
7340, 72ralrimi 3205 . . . 4 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) → ∀𝑦𝐵 ((𝐹 ↾ ran 𝑔)‘(𝑔𝑦)) = 𝑦)
7428, 32, 62, 732fvidf1od 7037 . . 3 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) → (𝐹 ↾ ran 𝑔):ran 𝑔1-1-onto𝐵)
75 reseq2 5826 . . . . 5 (𝑥 = ran 𝑔 → (𝐹𝑥) = (𝐹 ↾ ran 𝑔))
76 id 22 . . . . 5 (𝑥 = ran 𝑔𝑥 = ran 𝑔)
77 eqidd 2823 . . . . 5 (𝑥 = ran 𝑔𝐵 = 𝐵)
7875, 76, 77f1oeq123d 6592 . . . 4 (𝑥 = ran 𝑔 → ((𝐹𝑥):𝑥1-1-onto𝐵 ↔ (𝐹 ↾ ran 𝑔):ran 𝑔1-1-onto𝐵))
7978rspcev 3598 . . 3 ((ran 𝑔 ∈ 𝒫 𝐴 ∧ (𝐹 ↾ ran 𝑔):ran 𝑔1-1-onto𝐵) → ∃𝑥 ∈ 𝒫 𝐴(𝐹𝑥):𝑥1-1-onto𝐵)
8025, 74, 79syl2anc 587 . 2 (((𝐴𝑉𝐹:𝐴onto𝐵) ∧ (𝑔:𝐵𝐴 ∧ ∀𝑦𝐵 (𝑔𝑦) ∈ (𝐹 “ {𝑦}))) → ∃𝑥 ∈ 𝒫 𝐴(𝐹𝑥):𝑥1-1-onto𝐵)
8119, 80exlimddv 1936 1 ((𝐴𝑉𝐹:𝐴onto𝐵) → ∃𝑥 ∈ 𝒫 𝐴(𝐹𝑥):𝑥1-1-onto𝐵)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 399   = wceq 1538  wex 1781  wcel 2114  wral 3130  wrex 3131  Vcvv 3469  wss 3908  𝒫 cpw 4511  {csn 4539  ccnv 5531  ran crn 5533  cres 5534  cima 5535   Fn wfn 6329  wf 6330  ontowfo 6332  1-1-ontowf1o 6333  cfv 6334
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2178  ax-ext 2794  ax-rep 5166  ax-sep 5179  ax-nul 5186  ax-pow 5243  ax-pr 5307  ax-un 7446  ax-reg 9044  ax-inf2 9092  ax-ac2 9874
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3or 1085  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2622  df-eu 2653  df-clab 2801  df-cleq 2815  df-clel 2894  df-nfc 2962  df-ne 3012  df-ral 3135  df-rex 3136  df-reu 3137  df-rmo 3138  df-rab 3139  df-v 3471  df-sbc 3748  df-csb 3856  df-dif 3911  df-un 3913  df-in 3915  df-ss 3925  df-pss 3927  df-nul 4266  df-if 4440  df-pw 4513  df-sn 4540  df-pr 4542  df-tp 4544  df-op 4546  df-uni 4814  df-int 4852  df-iun 4896  df-iin 4897  df-br 5043  df-opab 5105  df-mpt 5123  df-tr 5149  df-id 5437  df-eprel 5442  df-po 5451  df-so 5452  df-fr 5491  df-se 5492  df-we 5493  df-xp 5538  df-rel 5539  df-cnv 5540  df-co 5541  df-dm 5542  df-rn 5543  df-res 5544  df-ima 5545  df-pred 6126  df-ord 6172  df-on 6173  df-lim 6174  df-suc 6175  df-iota 6293  df-fun 6336  df-fn 6337  df-f 6338  df-f1 6339  df-fo 6340  df-f1o 6341  df-fv 6342  df-isom 6343  df-riota 7098  df-om 7566  df-wrecs 7934  df-recs 7995  df-rdg 8033  df-en 8497  df-r1 9181  df-rank 9182  df-card 9356  df-ac 9531
This theorem is referenced by:  rabfodom  30272
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