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| Mirrors > Home > MPE Home > Th. List > f1ocnvdm | Structured version Visualization version GIF version | ||
| Description: The value of the converse of a one-to-one onto function belongs to its domain. (Contributed by NM, 26-May-2006.) |
| Ref | Expression |
|---|---|
| f1ocnvdm | ⊢ ((𝐹:𝐴–1-1-onto→𝐵 ∧ 𝐶 ∈ 𝐵) → (◡𝐹‘𝐶) ∈ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1ocnv 6786 | . . 3 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → ◡𝐹:𝐵–1-1-onto→𝐴) | |
| 2 | f1of 6774 | . . 3 ⊢ (◡𝐹:𝐵–1-1-onto→𝐴 → ◡𝐹:𝐵⟶𝐴) | |
| 3 | 1, 2 | syl 17 | . 2 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → ◡𝐹:𝐵⟶𝐴) |
| 4 | 3 | ffvelcdmda 7029 | 1 ⊢ ((𝐹:𝐴–1-1-onto→𝐵 ∧ 𝐶 ∈ 𝐵) → (◡𝐹‘𝐶) ∈ 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2113 ◡ccnv 5623 ⟶wf 6488 –1-1-onto→wf1o 6491 ‘cfv 6492 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-ne 2933 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 |
| This theorem is referenced by: f1oiso2 7298 f1ocnvfv3 7353 dif1enlem 9084 rexdif1en 9085 dif1en 9086 uzrdglem 13880 uzrdgsuci 13883 fzennn 13891 cardfz 13893 fzfi 13895 iunmbl2 25514 addonbday 28275 noseqrdglem 28301 noseqrdgsuc 28304 bdayfinlem 28482 f1otrg 28943 axcontlem10 29046 wlkiswwlks2lem5 29946 clwlkclwwlklem2a 30073 cnvbraval 32185 cnvbracl 32186 cycpmco2lem6 33213 cycpmco2 33215 mndpluscn 34083 ismtycnv 37999 rngoisocnv 38178 lautcnvclN 40344 lautcnvle 40345 lautcvr 40348 lautj 40349 lautm 40350 ltrncnvatb 40394 diacnvclN 41307 dihcnvcl 41527 dihlspsnat 41589 dihglblem6 41596 dochocss 41622 dochnoncon 41647 mapdcnvcl 41908 rmxyelxp 43150 cantnfub 43559 isuspgrim0lem 48135 isuspgrim0 48136 upgrimwlklem2 48140 upgrimtrls 48148 uhgrimisgrgriclem 48172 clnbgrgrimlem 48175 uspgrlimlem3 48232 grlicsym 48255 imaf1homlem 49348 uptrar 49457 |
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