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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 6833 | . . 3 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → ◡𝐹:𝐵–1-1-onto→𝐴) | |
| 2 | f1of 6820 | . . 3 ⊢ (◡𝐹:𝐵–1-1-onto→𝐴 → ◡𝐹:𝐵⟶𝐴) | |
| 3 | 1, 2 | syl 18 | . 2 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → ◡𝐹:𝐵⟶𝐴) |
| 4 | 3 | ffvelcdmda 7079 | 1 ⊢ ((𝐹:𝐴–1-1-onto→𝐵 ∧ 𝐶 ∈ 𝐵) → (◡𝐹‘𝐶) ∈ 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 ∈ wcel 2141 ◡ccnv 5660 ⟶wf 6532 –1-1-onto→wf1o 6535 ‘cfv 6536 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2143 ax-9 2151 ax-10 2174 ax-12 2211 ax-ext 2733 ax-sep 5256 ax-nul 5268 ax-pr 5404 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-nf 1812 df-sb 2095 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-ne 2957 df-ral 3078 df-rex 3088 df-rab 3415 df-v 3455 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-id 5556 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 |
| This theorem is referenced by: f1oiso2 7350 f1ocnvfv3 7405 dif1enlem 9143 rexdif1en 9144 dif1en 9145 uzrdglem 13992 uzrdgsuci 13995 fzennn 14003 cardfz 14005 fzfi 14007 iunmbl2 25695 addonbday 28448 noseqrdglem 28474 noseqrdgsuc 28477 bdayfinlem 28655 f1otrg 29186 axcontlem10 29289 wlkiswwlks2lem5 30188 clwlkclwwlklem2a 30315 cnvbraval 32428 cnvbracl 32429 cycpmco2lem6 33417 cycpmco2 33419 mndpluscn 34282 vonf1oonfo 35553 ismtycnv 38397 rngoisocnv 38576 lautcnvclN 40808 lautcnvle 40809 lautcvr 40812 lautj 40813 lautm 40814 ltrncnvatb 40858 diacnvclN 41771 dihcnvcl 41991 dihlspsnat 42053 dihglblem6 42060 dochocss 42086 dochnoncon 42111 mapdcnvcl 42372 rmxyelxp 43587 cantnfub 43996 isuspgrim0lem 48603 isuspgrim0 48604 upgrimwlklem2 48608 upgrimtrls 48616 uhgrimisgrgriclem 48640 clnbgrgrimlem 48643 uspgrlimlem3 48700 grlicsym 48723 imaf1homlem 49830 uptrar 49939 |
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