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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 6790 | . . 3 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → ◡𝐹:𝐵–1-1-onto→𝐴) | |
| 2 | f1of 6778 | . . 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 7034 | 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 5627 ⟶wf 6492 –1-1-onto→wf1o 6495 ‘cfv 6496 |
| 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 5232 ax-nul 5242 ax-pr 5374 |
| 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 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-id 5523 df-xp 5634 df-rel 5635 df-cnv 5636 df-co 5637 df-dm 5638 df-rn 5639 df-iota 6452 df-fun 6498 df-fn 6499 df-f 6500 df-f1 6501 df-fo 6502 df-f1o 6503 df-fv 6504 |
| This theorem is referenced by: f1oiso2 7304 f1ocnvfv3 7359 dif1enlem 9091 rexdif1en 9092 dif1en 9093 uzrdglem 13916 uzrdgsuci 13919 fzennn 13927 cardfz 13929 fzfi 13931 iunmbl2 25540 addonbday 28291 noseqrdglem 28317 noseqrdgsuc 28320 bdayfinlem 28498 f1otrg 28959 axcontlem10 29062 wlkiswwlks2lem5 29962 clwlkclwwlklem2a 30089 cnvbraval 32202 cnvbracl 32203 cycpmco2lem6 33213 cycpmco2 33215 mndpluscn 34092 ismtycnv 38145 rngoisocnv 38324 lautcnvclN 40556 lautcnvle 40557 lautcvr 40560 lautj 40561 lautm 40562 ltrncnvatb 40606 diacnvclN 41519 dihcnvcl 41739 dihlspsnat 41801 dihglblem6 41808 dochocss 41834 dochnoncon 41859 mapdcnvcl 42120 rmxyelxp 43366 cantnfub 43775 isuspgrim0lem 48389 isuspgrim0 48390 upgrimwlklem2 48394 upgrimtrls 48402 uhgrimisgrgriclem 48426 clnbgrgrimlem 48429 uspgrlimlem3 48486 grlicsym 48509 imaf1homlem 49602 uptrar 49711 |
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