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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 6786 | . 2 ⊢ (𝐹:𝐴–1-1→𝐵 → 𝐹:𝐴–1-1-onto→ran 𝐹) | |
| 2 | f1ocnv 6787 | . 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 6490 –1-1-onto→wf1o 6492 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-sep 5242 ax-nul 5252 ax-pr 5378 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-rab 3401 df-v 3443 df-dif 3905 df-un 3907 df-ss 3919 df-nul 4287 df-if 4481 df-sn 4582 df-pr 4584 df-op 4588 df-br 5100 df-opab 5162 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 |
| This theorem is referenced by: f1dmex 7903 f1domfi 9109 fin1a2lem7 10320 cycpmco2f1 33187 cycpmco2rn 33188 cycpmco2lem2 33190 cycpmco2lem3 33191 cycpmco2lem4 33192 cycpmco2lem5 33193 cycpmco2lem6 33194 cycpmco2lem7 33195 cycpmco2 33196 diophrw 43037 |
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