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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 6821 | . . 3 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → ◡𝐹:𝐵–1-1-onto→𝐴) | |
| 2 | f1of 6808 | . . 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 7067 | 1 ⊢ ((𝐹:𝐴–1-1-onto→𝐵 ∧ 𝐶 ∈ 𝐵) → (◡𝐹‘𝐶) ∈ 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 ∈ wcel 2144 ◡ccnv 5648 ⟶wf 6519 –1-1-onto→wf1o 6522 ‘cfv 6523 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-10 2177 ax-12 2214 ax-ext 2736 ax-sep 5248 ax-nul 5258 ax-pr 5392 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1101 df-tru 1565 df-fal 1575 df-ex 1802 df-nf 1806 df-sb 2093 df-mo 2568 df-eu 2598 df-clab 2743 df-cleq 2756 df-clel 2839 df-ne 2960 df-ral 3079 df-rex 3089 df-rab 3417 df-v 3458 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5103 df-opab 5165 df-id 5544 df-xp 5655 df-rel 5656 df-cnv 5657 df-co 5658 df-dm 5659 df-rn 5660 df-iota 6479 df-fun 6525 df-fn 6526 df-f 6527 df-f1 6528 df-fo 6529 df-f1o 6530 df-fv 6531 |
| This theorem is referenced by: f1oiso2 7338 f1ocnvfv3 7393 dif1enlem 9130 rexdif1en 9131 dif1en 9132 uzrdglem 13972 uzrdgsuci 13975 fzennn 13983 cardfz 13985 fzfi 13987 iunmbl2 25621 addonbday 28374 noseqrdglem 28400 noseqrdgsuc 28403 bdayfinlem 28581 f1otrg 29073 axcontlem10 29176 wlkiswwlks2lem5 30075 clwlkclwwlklem2a 30202 cnvbraval 32315 cnvbracl 32316 cycpmco2lem6 33313 cycpmco2 33315 mndpluscn 34225 vonf1oonfo 35462 ismtycnv 38306 rngoisocnv 38485 lautcnvclN 40717 lautcnvle 40718 lautcvr 40721 lautj 40722 lautm 40723 ltrncnvatb 40767 diacnvclN 41680 dihcnvcl 41900 dihlspsnat 41962 dihglblem6 41969 dochocss 41995 dochnoncon 42020 mapdcnvcl 42281 rmxyelxp 43494 cantnfub 43903 isuspgrim0lem 48520 isuspgrim0 48521 upgrimwlklem2 48525 upgrimtrls 48533 uhgrimisgrgriclem 48557 clnbgrgrimlem 48560 uspgrlimlem3 48617 grlicsym 48640 imaf1homlem 49733 uptrar 49842 |
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