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| Mirrors > Home > MPE Home > Th. List > f1cnv | Structured version Visualization version GIF version | ||
| Description: The converse of an injective function is bijective. (Contributed by FL, 11-Nov-2011.) |
| Ref | Expression |
|---|---|
| f1cnv | ⊢ (𝐹:𝐴–1-1→𝐵 → ◡𝐹:ran 𝐹–1-1-onto→𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1f1orn 6785 | . 2 ⊢ (𝐹:𝐴–1-1→𝐵 → 𝐹:𝐴–1-1-onto→ran 𝐹) | |
| 2 | f1ocnv 6786 | . 2 ⊢ (𝐹:𝐴–1-1-onto→ran 𝐹 → ◡𝐹:ran 𝐹–1-1-onto→𝐴) | |
| 3 | 1, 2 | syl 17 | 1 ⊢ (𝐹:𝐴–1-1→𝐵 → ◡𝐹:ran 𝐹–1-1-onto→𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ◡ccnv 5624 ran crn 5626 –1-1→wf1 6489 –1-1-onto→wf1o 6491 |
| 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 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2712 ax-sep 5225 ax-pr 5369 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-rab 3393 df-v 3434 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4269 df-if 4462 df-sn 4563 df-pr 4565 df-op 4569 df-br 5080 df-opab 5142 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 |
| This theorem is referenced by: f1dmex 7906 f1domfi 9112 fin1a2lem7 10326 cycpmco2f1 33212 cycpmco2rn 33213 cycpmco2lem2 33215 cycpmco2lem3 33216 cycpmco2lem4 33217 cycpmco2lem5 33218 cycpmco2lem6 33219 cycpmco2lem7 33220 cycpmco2 33221 diophrw 43209 |
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