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Theorem ssenen 8741
Description: Equinumerosity of equinumerous subsets of a set. (Contributed by NM, 30-Sep-2004.) (Revised by Mario Carneiro, 16-Nov-2014.)
Assertion
Ref Expression
ssenen (𝐴𝐵 → {𝑥 ∣ (𝑥𝐴𝑥𝐶)} ≈ {𝑥 ∣ (𝑥𝐵𝑥𝐶)})
Distinct variable groups:   𝑥,𝐴   𝑥,𝐵   𝑥,𝐶

Proof of Theorem ssenen
Dummy variables 𝑦 𝑧 𝑓 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 bren 8564 . . 3 (𝐴𝐵 ↔ ∃𝑓 𝑓:𝐴1-1-onto𝐵)
2 f1odm 6622 . . . . . . 7 (𝑓:𝐴1-1-onto𝐵 → dom 𝑓 = 𝐴)
3 vex 3402 . . . . . . . 8 𝑓 ∈ V
43dmex 7642 . . . . . . 7 dom 𝑓 ∈ V
52, 4eqeltrrdi 2842 . . . . . 6 (𝑓:𝐴1-1-onto𝐵𝐴 ∈ V)
6 pwexg 5245 . . . . . 6 (𝐴 ∈ V → 𝒫 𝐴 ∈ V)
7 inex1g 5187 . . . . . 6 (𝒫 𝐴 ∈ V → (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ∈ V)
85, 6, 73syl 18 . . . . 5 (𝑓:𝐴1-1-onto𝐵 → (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ∈ V)
9 f1ofo 6625 . . . . . . . 8 (𝑓:𝐴1-1-onto𝐵𝑓:𝐴onto𝐵)
10 forn 6595 . . . . . . . 8 (𝑓:𝐴onto𝐵 → ran 𝑓 = 𝐵)
119, 10syl 17 . . . . . . 7 (𝑓:𝐴1-1-onto𝐵 → ran 𝑓 = 𝐵)
123rnex 7643 . . . . . . 7 ran 𝑓 ∈ V
1311, 12eqeltrrdi 2842 . . . . . 6 (𝑓:𝐴1-1-onto𝐵𝐵 ∈ V)
14 pwexg 5245 . . . . . 6 (𝐵 ∈ V → 𝒫 𝐵 ∈ V)
15 inex1g 5187 . . . . . 6 (𝒫 𝐵 ∈ V → (𝒫 𝐵 ∩ {𝑥𝑥𝐶}) ∈ V)
1613, 14, 153syl 18 . . . . 5 (𝑓:𝐴1-1-onto𝐵 → (𝒫 𝐵 ∩ {𝑥𝑥𝐶}) ∈ V)
17 f1of1 6617 . . . . . . . . . . 11 (𝑓:𝐴1-1-onto𝐵𝑓:𝐴1-1𝐵)
1817adantr 484 . . . . . . . . . 10 ((𝑓:𝐴1-1-onto𝐵𝑦𝐴) → 𝑓:𝐴1-1𝐵)
1913adantr 484 . . . . . . . . . 10 ((𝑓:𝐴1-1-onto𝐵𝑦𝐴) → 𝐵 ∈ V)
20 simpr 488 . . . . . . . . . 10 ((𝑓:𝐴1-1-onto𝐵𝑦𝐴) → 𝑦𝐴)
21 vex 3402 . . . . . . . . . . 11 𝑦 ∈ V
2221a1i 11 . . . . . . . . . 10 ((𝑓:𝐴1-1-onto𝐵𝑦𝐴) → 𝑦 ∈ V)
23 f1imaen2g 8616 . . . . . . . . . 10 (((𝑓:𝐴1-1𝐵𝐵 ∈ V) ∧ (𝑦𝐴𝑦 ∈ V)) → (𝑓𝑦) ≈ 𝑦)
2418, 19, 20, 22, 23syl22anc 838 . . . . . . . . 9 ((𝑓:𝐴1-1-onto𝐵𝑦𝐴) → (𝑓𝑦) ≈ 𝑦)
25 entr 8607 . . . . . . . . 9 (((𝑓𝑦) ≈ 𝑦𝑦𝐶) → (𝑓𝑦) ≈ 𝐶)
2624, 25sylan 583 . . . . . . . 8 (((𝑓:𝐴1-1-onto𝐵𝑦𝐴) ∧ 𝑦𝐶) → (𝑓𝑦) ≈ 𝐶)
2726expl 461 . . . . . . 7 (𝑓:𝐴1-1-onto𝐵 → ((𝑦𝐴𝑦𝐶) → (𝑓𝑦) ≈ 𝐶))
28 imassrn 5914 . . . . . . . . 9 (𝑓𝑦) ⊆ ran 𝑓
2928, 10sseqtrid 3929 . . . . . . . 8 (𝑓:𝐴onto𝐵 → (𝑓𝑦) ⊆ 𝐵)
309, 29syl 17 . . . . . . 7 (𝑓:𝐴1-1-onto𝐵 → (𝑓𝑦) ⊆ 𝐵)
3127, 30jctild 529 . . . . . 6 (𝑓:𝐴1-1-onto𝐵 → ((𝑦𝐴𝑦𝐶) → ((𝑓𝑦) ⊆ 𝐵 ∧ (𝑓𝑦) ≈ 𝐶)))
32 elin 3859 . . . . . . 7 (𝑦 ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ↔ (𝑦 ∈ 𝒫 𝐴𝑦 ∈ {𝑥𝑥𝐶}))
3321elpw 4492 . . . . . . . 8 (𝑦 ∈ 𝒫 𝐴𝑦𝐴)
34 breq1 5033 . . . . . . . . 9 (𝑥 = 𝑦 → (𝑥𝐶𝑦𝐶))
3521, 34elab 3573 . . . . . . . 8 (𝑦 ∈ {𝑥𝑥𝐶} ↔ 𝑦𝐶)
3633, 35anbi12i 630 . . . . . . 7 ((𝑦 ∈ 𝒫 𝐴𝑦 ∈ {𝑥𝑥𝐶}) ↔ (𝑦𝐴𝑦𝐶))
3732, 36bitri 278 . . . . . 6 (𝑦 ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ↔ (𝑦𝐴𝑦𝐶))
38 elin 3859 . . . . . . 7 ((𝑓𝑦) ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}) ↔ ((𝑓𝑦) ∈ 𝒫 𝐵 ∧ (𝑓𝑦) ∈ {𝑥𝑥𝐶}))
393imaex 7647 . . . . . . . . 9 (𝑓𝑦) ∈ V
4039elpw 4492 . . . . . . . 8 ((𝑓𝑦) ∈ 𝒫 𝐵 ↔ (𝑓𝑦) ⊆ 𝐵)
41 breq1 5033 . . . . . . . . 9 (𝑥 = (𝑓𝑦) → (𝑥𝐶 ↔ (𝑓𝑦) ≈ 𝐶))
4239, 41elab 3573 . . . . . . . 8 ((𝑓𝑦) ∈ {𝑥𝑥𝐶} ↔ (𝑓𝑦) ≈ 𝐶)
4340, 42anbi12i 630 . . . . . . 7 (((𝑓𝑦) ∈ 𝒫 𝐵 ∧ (𝑓𝑦) ∈ {𝑥𝑥𝐶}) ↔ ((𝑓𝑦) ⊆ 𝐵 ∧ (𝑓𝑦) ≈ 𝐶))
4438, 43bitri 278 . . . . . 6 ((𝑓𝑦) ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}) ↔ ((𝑓𝑦) ⊆ 𝐵 ∧ (𝑓𝑦) ≈ 𝐶))
4531, 37, 443imtr4g 299 . . . . 5 (𝑓:𝐴1-1-onto𝐵 → (𝑦 ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) → (𝑓𝑦) ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶})))
46 f1ocnv 6630 . . . . . . 7 (𝑓:𝐴1-1-onto𝐵𝑓:𝐵1-1-onto𝐴)
47 f1of1 6617 . . . . . . . . . . . 12 (𝑓:𝐵1-1-onto𝐴𝑓:𝐵1-1𝐴)
48 f1f1orn 6629 . . . . . . . . . . . 12 (𝑓:𝐵1-1𝐴𝑓:𝐵1-1-onto→ran 𝑓)
49 f1of1 6617 . . . . . . . . . . . 12 (𝑓:𝐵1-1-onto→ran 𝑓𝑓:𝐵1-1→ran 𝑓)
5047, 48, 493syl 18 . . . . . . . . . . 11 (𝑓:𝐵1-1-onto𝐴𝑓:𝐵1-1→ran 𝑓)
51 vex 3402 . . . . . . . . . . . 12 𝑧 ∈ V
5251f1imaen 8617 . . . . . . . . . . 11 ((𝑓:𝐵1-1→ran 𝑓𝑧𝐵) → (𝑓𝑧) ≈ 𝑧)
5350, 52sylan 583 . . . . . . . . . 10 ((𝑓:𝐵1-1-onto𝐴𝑧𝐵) → (𝑓𝑧) ≈ 𝑧)
54 entr 8607 . . . . . . . . . 10 (((𝑓𝑧) ≈ 𝑧𝑧𝐶) → (𝑓𝑧) ≈ 𝐶)
5553, 54sylan 583 . . . . . . . . 9 (((𝑓:𝐵1-1-onto𝐴𝑧𝐵) ∧ 𝑧𝐶) → (𝑓𝑧) ≈ 𝐶)
5655expl 461 . . . . . . . 8 (𝑓:𝐵1-1-onto𝐴 → ((𝑧𝐵𝑧𝐶) → (𝑓𝑧) ≈ 𝐶))
57 f1ofo 6625 . . . . . . . . 9 (𝑓:𝐵1-1-onto𝐴𝑓:𝐵onto𝐴)
58 imassrn 5914 . . . . . . . . . 10 (𝑓𝑧) ⊆ ran 𝑓
59 forn 6595 . . . . . . . . . 10 (𝑓:𝐵onto𝐴 → ran 𝑓 = 𝐴)
6058, 59sseqtrid 3929 . . . . . . . . 9 (𝑓:𝐵onto𝐴 → (𝑓𝑧) ⊆ 𝐴)
6157, 60syl 17 . . . . . . . 8 (𝑓:𝐵1-1-onto𝐴 → (𝑓𝑧) ⊆ 𝐴)
6256, 61jctild 529 . . . . . . 7 (𝑓:𝐵1-1-onto𝐴 → ((𝑧𝐵𝑧𝐶) → ((𝑓𝑧) ⊆ 𝐴 ∧ (𝑓𝑧) ≈ 𝐶)))
6346, 62syl 17 . . . . . 6 (𝑓:𝐴1-1-onto𝐵 → ((𝑧𝐵𝑧𝐶) → ((𝑓𝑧) ⊆ 𝐴 ∧ (𝑓𝑧) ≈ 𝐶)))
64 elin 3859 . . . . . . 7 (𝑧 ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}) ↔ (𝑧 ∈ 𝒫 𝐵𝑧 ∈ {𝑥𝑥𝐶}))
6551elpw 4492 . . . . . . . 8 (𝑧 ∈ 𝒫 𝐵𝑧𝐵)
66 breq1 5033 . . . . . . . . 9 (𝑥 = 𝑧 → (𝑥𝐶𝑧𝐶))
6751, 66elab 3573 . . . . . . . 8 (𝑧 ∈ {𝑥𝑥𝐶} ↔ 𝑧𝐶)
6865, 67anbi12i 630 . . . . . . 7 ((𝑧 ∈ 𝒫 𝐵𝑧 ∈ {𝑥𝑥𝐶}) ↔ (𝑧𝐵𝑧𝐶))
6964, 68bitri 278 . . . . . 6 (𝑧 ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}) ↔ (𝑧𝐵𝑧𝐶))
70 elin 3859 . . . . . . 7 ((𝑓𝑧) ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ↔ ((𝑓𝑧) ∈ 𝒫 𝐴 ∧ (𝑓𝑧) ∈ {𝑥𝑥𝐶}))
713cnvex 7656 . . . . . . . . . 10 𝑓 ∈ V
7271imaex 7647 . . . . . . . . 9 (𝑓𝑧) ∈ V
7372elpw 4492 . . . . . . . 8 ((𝑓𝑧) ∈ 𝒫 𝐴 ↔ (𝑓𝑧) ⊆ 𝐴)
74 breq1 5033 . . . . . . . . 9 (𝑥 = (𝑓𝑧) → (𝑥𝐶 ↔ (𝑓𝑧) ≈ 𝐶))
7572, 74elab 3573 . . . . . . . 8 ((𝑓𝑧) ∈ {𝑥𝑥𝐶} ↔ (𝑓𝑧) ≈ 𝐶)
7673, 75anbi12i 630 . . . . . . 7 (((𝑓𝑧) ∈ 𝒫 𝐴 ∧ (𝑓𝑧) ∈ {𝑥𝑥𝐶}) ↔ ((𝑓𝑧) ⊆ 𝐴 ∧ (𝑓𝑧) ≈ 𝐶))
7770, 76bitri 278 . . . . . 6 ((𝑓𝑧) ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ↔ ((𝑓𝑧) ⊆ 𝐴 ∧ (𝑓𝑧) ≈ 𝐶))
7863, 69, 773imtr4g 299 . . . . 5 (𝑓:𝐴1-1-onto𝐵 → (𝑧 ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}) → (𝑓𝑧) ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶})))
79 simpl 486 . . . . . . . . . . 11 ((𝑧 ∈ 𝒫 𝐵𝑧 ∈ {𝑥𝑥𝐶}) → 𝑧 ∈ 𝒫 𝐵)
8079elpwid 4499 . . . . . . . . . 10 ((𝑧 ∈ 𝒫 𝐵𝑧 ∈ {𝑥𝑥𝐶}) → 𝑧𝐵)
8164, 80sylbi 220 . . . . . . . . 9 (𝑧 ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}) → 𝑧𝐵)
82 imaeq2 5899 . . . . . . . . . . . 12 (𝑦 = (𝑓𝑧) → (𝑓𝑦) = (𝑓 “ (𝑓𝑧)))
83 f1orel 6621 . . . . . . . . . . . . . . . 16 (𝑓:𝐴1-1-onto𝐵 → Rel 𝑓)
84 dfrel2 6021 . . . . . . . . . . . . . . . 16 (Rel 𝑓𝑓 = 𝑓)
8583, 84sylib 221 . . . . . . . . . . . . . . 15 (𝑓:𝐴1-1-onto𝐵𝑓 = 𝑓)
8685imaeq1d 5902 . . . . . . . . . . . . . 14 (𝑓:𝐴1-1-onto𝐵 → (𝑓 “ (𝑓𝑧)) = (𝑓 “ (𝑓𝑧)))
8786adantr 484 . . . . . . . . . . . . 13 ((𝑓:𝐴1-1-onto𝐵𝑧𝐵) → (𝑓 “ (𝑓𝑧)) = (𝑓 “ (𝑓𝑧)))
8846, 47syl 17 . . . . . . . . . . . . . 14 (𝑓:𝐴1-1-onto𝐵𝑓:𝐵1-1𝐴)
89 f1imacnv 6634 . . . . . . . . . . . . . 14 ((𝑓:𝐵1-1𝐴𝑧𝐵) → (𝑓 “ (𝑓𝑧)) = 𝑧)
9088, 89sylan 583 . . . . . . . . . . . . 13 ((𝑓:𝐴1-1-onto𝐵𝑧𝐵) → (𝑓 “ (𝑓𝑧)) = 𝑧)
9187, 90eqtr3d 2775 . . . . . . . . . . . 12 ((𝑓:𝐴1-1-onto𝐵𝑧𝐵) → (𝑓 “ (𝑓𝑧)) = 𝑧)
9282, 91sylan9eqr 2795 . . . . . . . . . . 11 (((𝑓:𝐴1-1-onto𝐵𝑧𝐵) ∧ 𝑦 = (𝑓𝑧)) → (𝑓𝑦) = 𝑧)
9392eqcomd 2744 . . . . . . . . . 10 (((𝑓:𝐴1-1-onto𝐵𝑧𝐵) ∧ 𝑦 = (𝑓𝑧)) → 𝑧 = (𝑓𝑦))
9493ex 416 . . . . . . . . 9 ((𝑓:𝐴1-1-onto𝐵𝑧𝐵) → (𝑦 = (𝑓𝑧) → 𝑧 = (𝑓𝑦)))
9581, 94sylan2 596 . . . . . . . 8 ((𝑓:𝐴1-1-onto𝐵𝑧 ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶})) → (𝑦 = (𝑓𝑧) → 𝑧 = (𝑓𝑦)))
9695adantrl 716 . . . . . . 7 ((𝑓:𝐴1-1-onto𝐵 ∧ (𝑦 ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ∧ 𝑧 ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}))) → (𝑦 = (𝑓𝑧) → 𝑧 = (𝑓𝑦)))
97 simpl 486 . . . . . . . . . . 11 ((𝑦 ∈ 𝒫 𝐴𝑦 ∈ {𝑥𝑥𝐶}) → 𝑦 ∈ 𝒫 𝐴)
9897elpwid 4499 . . . . . . . . . 10 ((𝑦 ∈ 𝒫 𝐴𝑦 ∈ {𝑥𝑥𝐶}) → 𝑦𝐴)
9932, 98sylbi 220 . . . . . . . . 9 (𝑦 ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) → 𝑦𝐴)
100 imaeq2 5899 . . . . . . . . . . . 12 (𝑧 = (𝑓𝑦) → (𝑓𝑧) = (𝑓 “ (𝑓𝑦)))
101 f1imacnv 6634 . . . . . . . . . . . . 13 ((𝑓:𝐴1-1𝐵𝑦𝐴) → (𝑓 “ (𝑓𝑦)) = 𝑦)
10217, 101sylan 583 . . . . . . . . . . . 12 ((𝑓:𝐴1-1-onto𝐵𝑦𝐴) → (𝑓 “ (𝑓𝑦)) = 𝑦)
103100, 102sylan9eqr 2795 . . . . . . . . . . 11 (((𝑓:𝐴1-1-onto𝐵𝑦𝐴) ∧ 𝑧 = (𝑓𝑦)) → (𝑓𝑧) = 𝑦)
104103eqcomd 2744 . . . . . . . . . 10 (((𝑓:𝐴1-1-onto𝐵𝑦𝐴) ∧ 𝑧 = (𝑓𝑦)) → 𝑦 = (𝑓𝑧))
105104ex 416 . . . . . . . . 9 ((𝑓:𝐴1-1-onto𝐵𝑦𝐴) → (𝑧 = (𝑓𝑦) → 𝑦 = (𝑓𝑧)))
10699, 105sylan2 596 . . . . . . . 8 ((𝑓:𝐴1-1-onto𝐵𝑦 ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶})) → (𝑧 = (𝑓𝑦) → 𝑦 = (𝑓𝑧)))
107106adantrr 717 . . . . . . 7 ((𝑓:𝐴1-1-onto𝐵 ∧ (𝑦 ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ∧ 𝑧 ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}))) → (𝑧 = (𝑓𝑦) → 𝑦 = (𝑓𝑧)))
10896, 107impbid 215 . . . . . 6 ((𝑓:𝐴1-1-onto𝐵 ∧ (𝑦 ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ∧ 𝑧 ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}))) → (𝑦 = (𝑓𝑧) ↔ 𝑧 = (𝑓𝑦)))
109108ex 416 . . . . 5 (𝑓:𝐴1-1-onto𝐵 → ((𝑦 ∈ (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ∧ 𝑧 ∈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶})) → (𝑦 = (𝑓𝑧) ↔ 𝑧 = (𝑓𝑦))))
1108, 16, 45, 78, 109en3d 8592 . . . 4 (𝑓:𝐴1-1-onto𝐵 → (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ≈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}))
111110exlimiv 1937 . . 3 (∃𝑓 𝑓:𝐴1-1-onto𝐵 → (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ≈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}))
1121, 111sylbi 220 . 2 (𝐴𝐵 → (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) ≈ (𝒫 𝐵 ∩ {𝑥𝑥𝐶}))
113 df-pw 4490 . . . 4 𝒫 𝐴 = {𝑥𝑥𝐴}
114113ineq1i 4099 . . 3 (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) = ({𝑥𝑥𝐴} ∩ {𝑥𝑥𝐶})
115 inab 4189 . . 3 ({𝑥𝑥𝐴} ∩ {𝑥𝑥𝐶}) = {𝑥 ∣ (𝑥𝐴𝑥𝐶)}
116114, 115eqtri 2761 . 2 (𝒫 𝐴 ∩ {𝑥𝑥𝐶}) = {𝑥 ∣ (𝑥𝐴𝑥𝐶)}
117 df-pw 4490 . . . 4 𝒫 𝐵 = {𝑥𝑥𝐵}
118117ineq1i 4099 . . 3 (𝒫 𝐵 ∩ {𝑥𝑥𝐶}) = ({𝑥𝑥𝐵} ∩ {𝑥𝑥𝐶})
119 inab 4189 . . 3 ({𝑥𝑥𝐵} ∩ {𝑥𝑥𝐶}) = {𝑥 ∣ (𝑥𝐵𝑥𝐶)}
120118, 119eqtri 2761 . 2 (𝒫 𝐵 ∩ {𝑥𝑥𝐶}) = {𝑥 ∣ (𝑥𝐵𝑥𝐶)}
121112, 116, 1203brtr3g 5063 1 (𝐴𝐵 → {𝑥 ∣ (𝑥𝐴𝑥𝐶)} ≈ {𝑥 ∣ (𝑥𝐵𝑥𝐶)})
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 399   = wceq 1542  wex 1786  wcel 2114  {cab 2716  Vcvv 3398  cin 3842  wss 3843  𝒫 cpw 4488   class class class wbr 5030  ccnv 5524  dom cdm 5525  ran crn 5526  cima 5528  Rel wrel 5530  1-1wf1 6336  ontowfo 6337  1-1-ontowf1o 6338  cen 8552
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1975  ax-7 2020  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2162  ax-12 2179  ax-ext 2710  ax-rep 5154  ax-sep 5167  ax-nul 5174  ax-pow 5232  ax-pr 5296  ax-un 7479
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 847  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1787  df-nf 1791  df-sb 2075  df-mo 2540  df-eu 2570  df-clab 2717  df-cleq 2730  df-clel 2811  df-nfc 2881  df-ne 2935  df-ral 3058  df-rex 3059  df-reu 3060  df-rab 3062  df-v 3400  df-sbc 3681  df-csb 3791  df-dif 3846  df-un 3848  df-in 3850  df-ss 3860  df-nul 4212  df-if 4415  df-pw 4490  df-sn 4517  df-pr 4519  df-op 4523  df-uni 4797  df-iun 4883  df-br 5031  df-opab 5093  df-mpt 5111  df-id 5429  df-xp 5531  df-rel 5532  df-cnv 5533  df-co 5534  df-dm 5535  df-rn 5536  df-res 5537  df-ima 5538  df-iota 6297  df-fun 6341  df-fn 6342  df-f 6343  df-f1 6344  df-fo 6345  df-f1o 6346  df-fv 6347  df-er 8320  df-en 8556
This theorem is referenced by:  infmap2  9718
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