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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 7645 | . 2 ⊢ (𝜑 → (𝐹:𝐴–1-1-onto→𝐵 ∧ ◡𝐹 = (𝑦 ∈ 𝐵 ↦ 𝐷))) |
| 6 | 5 | simpld 498 | 1 ⊢ (𝜑 → 𝐹:𝐴–1-1-onto→𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 = wceq 1559 ∈ wcel 2141 ↦ cmpt 5180 ◡ccnv 5644 –1-1-onto→wf1o 6516 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5245 ax-pr 5389 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4480 df-sn 4582 df-pr 4584 df-op 4588 df-br 5100 df-opab 5162 df-mpt 5181 df-id 5540 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-fun 6519 df-fn 6520 df-f 6521 df-f1 6522 df-fo 6523 df-f1o 6524 |
| This theorem is referenced by: f1opw2 7647 mpof1o2d 8100 en3d 8966 f1opwfi 9296 mapfien 9351 djulf1o 9867 djurf1o 9868 fin23lem22 10281 negf1o 11614 incexclem 15849 dvdsflip 16334 hashgcdlem 16806 grplmulf1o 19038 grpraddf1o 19039 conjghm 19272 gapm 19329 sylow2a 19642 lsmhash 19728 psrbagconf1o 21961 psdmul 22211 hmeoimaf1o 23810 itg1mulc 25746 resinf1o 26578 eff1olem 26590 sqff1o 27223 dvdsppwf1o 27227 dvdsflf1o 27228 fcobij 32872 mgcf1o 33142 subfacp1lem3 35496 subfacp1lem5 35498 frlmsnic 43122 isubgr3stgrlem8 48559 |
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