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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 6873 | . 2 ⊢ (𝐹:𝐴–1-1→𝐵 → 𝐹:𝐴–1-1-onto→ran 𝐹) | |
2 | f1ocnv 6874 | . 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 5699 ran crn 5701 –1-1→wf1 6570 –1-1-onto→wf1o 6572 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pr 5447 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-sb 2065 df-clab 2718 df-cleq 2732 df-clel 2819 df-rab 3444 df-v 3490 df-dif 3979 df-un 3981 df-ss 3993 df-nul 4353 df-if 4549 df-sn 4649 df-pr 4651 df-op 4655 df-br 5167 df-opab 5229 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-fun 6575 df-fn 6576 df-f 6577 df-f1 6578 df-fo 6579 df-f1o 6580 |
This theorem is referenced by: f1dmex 7997 f1domfi 9247 fin1a2lem7 10475 cycpmco2f1 33117 cycpmco2rn 33118 cycpmco2lem2 33120 cycpmco2lem3 33121 cycpmco2lem4 33122 cycpmco2lem5 33123 cycpmco2lem6 33124 cycpmco2lem7 33125 cycpmco2 33126 diophrw 42715 |
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