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| Mirrors > Home > MPE Home > Th. List > f1o2d | Structured version Visualization version GIF version | ||
| Description: Describe an implicit one-to-one onto function. (Contributed by Mario Carneiro, 12-May-2014.) |
| Ref | Expression |
|---|---|
| f1od.1 | ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐶) |
| f1o2d.2 | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ 𝐵) |
| f1o2d.3 | ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝐷 ∈ 𝐴) |
| f1o2d.4 | ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵)) → (𝑥 = 𝐷 ↔ 𝑦 = 𝐶)) |
| Ref | Expression |
|---|---|
| f1o2d | ⊢ (𝜑 → 𝐹:𝐴–1-1-onto→𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1od.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐶) | |
| 2 | f1o2d.2 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ 𝐵) | |
| 3 | f1o2d.3 | . . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝐷 ∈ 𝐴) | |
| 4 | f1o2d.4 | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵)) → (𝑥 = 𝐷 ↔ 𝑦 = 𝐶)) | |
| 5 | 1, 2, 3, 4 | f1ocnv2d 7653 | . 2 ⊢ (𝜑 → (𝐹:𝐴–1-1-onto→𝐵 ∧ ◡𝐹 = (𝑦 ∈ 𝐵 ↦ 𝐷))) |
| 6 | 5 | simpld 499 | 1 ⊢ (𝜑 → 𝐹:𝐴–1-1-onto→𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 = wceq 1563 ∈ wcel 2145 ↦ cmpt 5186 ◡ccnv 5651 –1-1-onto→wf1o 6524 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5251 ax-pr 5395 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ral 3080 df-rex 3090 df-rab 3418 df-v 3459 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-sn 4586 df-pr 4588 df-op 4592 df-br 5106 df-opab 5168 df-mpt 5187 df-id 5547 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 |
| This theorem is referenced by: f1opw2 7655 mpof1o2d 8109 en3d 8974 f1opwfi 9301 mapfien 9356 djulf1o 9886 djurf1o 9887 fin23lem22 10299 negf1o 11632 incexclem 15880 dvdsflip 16365 hashgcdlem 16837 grplmulf1o 19070 grpraddf1o 19071 conjghm 19310 gapm 19367 sylow2a 19680 lsmhash 19766 psrbagconf1o 22039 psdmul 22289 hmeoimaf1o 23888 itg1mulc 25824 resinf1o 26659 eff1olem 26671 sqff1o 27304 dvdsppwf1o 27308 dvdsflf1o 27309 fcobij 32977 mgcf1o 33236 subfacp1lem3 35545 subfacp1lem5 35547 frlmsnic 43170 isubgr3stgrlem8 48593 |
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