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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 6785 | . . 3 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → ◡𝐹:𝐵–1-1-onto→𝐴) | |
| 2 | f1of 6773 | . . 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 2114 ◡ccnv 5622 ⟶wf 6487 –1-1-onto→wf1o 6490 ‘cfv 6491 |
| 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 2183 ax-ext 2707 ax-sep 5240 ax-nul 5250 ax-pr 5376 |
| 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 2932 df-ral 3051 df-rex 3060 df-rab 3399 df-v 3441 df-dif 3903 df-un 3905 df-ss 3917 df-nul 4285 df-if 4479 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-br 5098 df-opab 5160 df-id 5518 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-iota 6447 df-fun 6493 df-fn 6494 df-f 6495 df-f1 6496 df-fo 6497 df-f1o 6498 df-fv 6499 |
| This theorem is referenced by: f1oiso2 7298 f1ocnvfv3 7353 dif1enlem 9086 rexdif1en 9087 dif1en 9088 uzrdglem 13882 uzrdgsuci 13885 fzennn 13893 cardfz 13895 fzfi 13897 iunmbl2 25516 addsonbday 28258 noseqrdglem 28284 noseqrdgsuc 28287 bdayfinlem 28463 f1otrg 28924 axcontlem10 29027 wlkiswwlks2lem5 29927 clwlkclwwlklem2a 30054 cnvbraval 32166 cnvbracl 32167 cycpmco2lem6 33192 cycpmco2 33194 mndpluscn 34062 ismtycnv 37972 rngoisocnv 38151 lautcnvclN 40383 lautcnvle 40384 lautcvr 40387 lautj 40388 lautm 40389 ltrncnvatb 40433 diacnvclN 41346 dihcnvcl 41566 dihlspsnat 41628 dihglblem6 41635 dochocss 41661 dochnoncon 41686 mapdcnvcl 41947 rmxyelxp 43191 cantnfub 43600 isuspgrim0lem 48176 isuspgrim0 48177 upgrimwlklem2 48181 upgrimtrls 48189 uhgrimisgrgriclem 48213 clnbgrgrimlem 48216 uspgrlimlem3 48273 grlicsym 48296 imaf1homlem 49389 uptrar 49498 |
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