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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 6781 | . . 3 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → ◡𝐹:𝐵–1-1-onto→𝐴) | |
| 2 | f1of 6769 | . . 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 7025 | 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 2114 ◡ccnv 5619 ⟶wf 6483 –1-1-onto→wf1o 6486 ‘cfv 6487 |
| 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-10 2147 ax-12 2184 ax-ext 2707 ax-sep 5220 ax-nul 5230 ax-pr 5364 |
| 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-nf 1786 df-sb 2069 df-mo 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-ne 2931 df-ral 3050 df-rex 3060 df-rab 3388 df-v 3429 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4264 df-if 4457 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-br 5075 df-opab 5137 df-id 5515 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 |
| This theorem is referenced by: f1oiso2 7296 f1ocnvfv3 7351 dif1enlem 9083 rexdif1en 9084 dif1en 9085 uzrdglem 13908 uzrdgsuci 13911 fzennn 13919 cardfz 13921 fzfi 13923 iunmbl2 25512 addonbday 28259 noseqrdglem 28285 noseqrdgsuc 28288 bdayfinlem 28466 f1otrg 28927 axcontlem10 29030 wlkiswwlks2lem5 29929 clwlkclwwlklem2a 30056 cnvbraval 32169 cnvbracl 32170 cycpmco2lem6 33180 cycpmco2 33182 mndpluscn 34058 ismtycnv 38111 rngoisocnv 38290 lautcnvclN 40522 lautcnvle 40523 lautcvr 40526 lautj 40527 lautm 40528 ltrncnvatb 40572 diacnvclN 41485 dihcnvcl 41705 dihlspsnat 41767 dihglblem6 41774 dochocss 41800 dochnoncon 41825 mapdcnvcl 42086 rmxyelxp 43328 cantnfub 43737 isuspgrim0lem 48357 isuspgrim0 48358 upgrimwlklem2 48362 upgrimtrls 48370 uhgrimisgrgriclem 48394 clnbgrgrimlem 48397 uspgrlimlem3 48454 grlicsym 48477 imaf1homlem 49570 uptrar 49679 |
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