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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 6783 | . . 3 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → ◡𝐹:𝐵–1-1-onto→𝐴) | |
| 2 | f1of 6771 | . . 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 7029 | 1 ⊢ ((𝐹:𝐴–1-1-onto→𝐵 ∧ 𝐶 ∈ 𝐵) → (◡𝐹‘𝐶) ∈ 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 397 ∈ wcel 2121 ◡ccnv 5620 ⟶wf 6485 –1-1-onto→wf1o 6488 ‘cfv 6489 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-nul 5231 ax-pr 5365 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-ne 2937 df-ral 3056 df-rex 3066 df-rab 3394 df-v 3435 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4265 df-if 4458 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-br 5076 df-opab 5138 df-id 5516 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 |
| This theorem is referenced by: f1oiso2 7300 f1ocnvfv3 7355 dif1enlem 9088 rexdif1en 9089 dif1en 9090 uzrdglem 13914 uzrdgsuci 13917 fzennn 13925 cardfz 13927 fzfi 13929 iunmbl2 25546 addonbday 28293 noseqrdglem 28319 noseqrdgsuc 28322 bdayfinlem 28500 f1otrg 28961 axcontlem10 29064 wlkiswwlks2lem5 29963 clwlkclwwlklem2a 30090 cnvbraval 32203 cnvbracl 32204 cycpmco2lem6 33216 cycpmco2 33218 mndpluscn 34122 ismtycnv 38184 rngoisocnv 38363 lautcnvclN 40595 lautcnvle 40596 lautcvr 40599 lautj 40600 lautm 40601 ltrncnvatb 40645 diacnvclN 41558 dihcnvcl 41778 dihlspsnat 41840 dihglblem6 41847 dochocss 41873 dochnoncon 41898 mapdcnvcl 42159 rmxyelxp 43372 cantnfub 43781 isuspgrim0lem 48398 isuspgrim0 48399 upgrimwlklem2 48403 upgrimtrls 48411 uhgrimisgrgriclem 48435 clnbgrgrimlem 48438 uspgrlimlem3 48495 grlicsym 48518 imaf1homlem 49611 uptrar 49720 |
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