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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 6787 | . . 3 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → ◡𝐹:𝐵–1-1-onto→𝐴) | |
| 2 | f1of 6775 | . . 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 7031 | 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 5624 ⟶wf 6489 –1-1-onto→wf1o 6492 ‘cfv 6493 |
| 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 2185 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-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-ne 2934 df-ral 3053 df-rex 3062 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-uni 4865 df-br 5100 df-opab 5162 df-id 5520 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 |
| This theorem is referenced by: f1oiso2 7300 f1ocnvfv3 7355 dif1enlem 9088 rexdif1en 9089 dif1en 9090 uzrdglem 13884 uzrdgsuci 13887 fzennn 13895 cardfz 13897 fzfi 13899 iunmbl2 25518 addonbday 28279 noseqrdglem 28305 noseqrdgsuc 28308 bdayfinlem 28486 f1otrg 28947 axcontlem10 29050 wlkiswwlks2lem5 29950 clwlkclwwlklem2a 30077 cnvbraval 32189 cnvbracl 32190 cycpmco2lem6 33215 cycpmco2 33217 mndpluscn 34085 ismtycnv 38005 rngoisocnv 38184 lautcnvclN 40416 lautcnvle 40417 lautcvr 40420 lautj 40421 lautm 40422 ltrncnvatb 40466 diacnvclN 41379 dihcnvcl 41599 dihlspsnat 41661 dihglblem6 41668 dochocss 41694 dochnoncon 41719 mapdcnvcl 41980 rmxyelxp 43221 cantnfub 43630 isuspgrim0lem 48206 isuspgrim0 48207 upgrimwlklem2 48211 upgrimtrls 48219 uhgrimisgrgriclem 48243 clnbgrgrimlem 48246 uspgrlimlem3 48303 grlicsym 48326 imaf1homlem 49419 uptrar 49528 |
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