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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 6796 | . . 3 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → ◡𝐹:𝐵–1-1-onto→𝐴) | |
| 2 | f1of 6784 | . . 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 7040 | 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 5633 ⟶wf 6498 –1-1-onto→wf1o 6501 ‘cfv 6502 |
| 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 5245 ax-nul 5255 ax-pr 5381 |
| 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 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-id 5529 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-iota 6458 df-fun 6504 df-fn 6505 df-f 6506 df-f1 6507 df-fo 6508 df-f1o 6509 df-fv 6510 |
| This theorem is referenced by: f1oiso2 7310 f1ocnvfv3 7365 dif1enlem 9098 rexdif1en 9099 dif1en 9100 uzrdglem 13894 uzrdgsuci 13897 fzennn 13905 cardfz 13907 fzfi 13909 iunmbl2 25531 addonbday 28292 noseqrdglem 28318 noseqrdgsuc 28321 bdayfinlem 28499 f1otrg 28961 axcontlem10 29064 wlkiswwlks2lem5 29964 clwlkclwwlklem2a 30091 cnvbraval 32204 cnvbracl 32205 cycpmco2lem6 33231 cycpmco2 33233 mndpluscn 34110 ismtycnv 38082 rngoisocnv 38261 lautcnvclN 40493 lautcnvle 40494 lautcvr 40497 lautj 40498 lautm 40499 ltrncnvatb 40543 diacnvclN 41456 dihcnvcl 41676 dihlspsnat 41738 dihglblem6 41745 dochocss 41771 dochnoncon 41796 mapdcnvcl 42057 rmxyelxp 43298 cantnfub 43707 isuspgrim0lem 48282 isuspgrim0 48283 upgrimwlklem2 48287 upgrimtrls 48295 uhgrimisgrgriclem 48319 clnbgrgrimlem 48322 uspgrlimlem3 48379 grlicsym 48402 imaf1homlem 49495 uptrar 49604 |
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