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| Mirrors > Home > MPE Home > Th. List > cnvresid | Structured version Visualization version GIF version | ||
| Description: Converse of a restricted identity function. (Contributed by FL, 4-Mar-2007.) |
| Ref | Expression |
|---|---|
| cnvresid | ⊢ ◡( I ↾ 𝐴) = ( I ↾ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnvi 5859 | . . 3 ⊢ ◡ I = I | |
| 2 | 1 | eqcomi 2773 | . 2 ⊢ I = ◡ I |
| 3 | funi 6555 | . . 3 ⊢ Fun I | |
| 4 | funeq 6543 | . . 3 ⊢ ( I = ◡ I → (Fun I ↔ Fun ◡ I )) | |
| 5 | 3, 4 | mpbii 235 | . 2 ⊢ ( I = ◡ I → Fun ◡ I ) |
| 6 | funcnvres 6601 | . . 3 ⊢ (Fun ◡ I → ◡( I ↾ 𝐴) = (◡ I ↾ ( I “ 𝐴))) | |
| 7 | imai 6065 | . . . 4 ⊢ ( I “ 𝐴) = 𝐴 | |
| 8 | 1, 7 | reseq12i 5965 | . . 3 ⊢ (◡ I ↾ ( I “ 𝐴)) = ( I ↾ 𝐴) |
| 9 | 6, 8 | eqtrdi 2815 | . 2 ⊢ (Fun ◡ I → ◡( I ↾ 𝐴) = ( I ↾ 𝐴)) |
| 10 | 2, 5, 9 | mp2b 10 | 1 ⊢ ◡( I ↾ 𝐴) = ( I ↾ 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1562 I cid 5543 ◡ccnv 5648 ↾ cres 5651 “ cima 5652 Fun wfun 6517 |
| 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-12 2214 ax-ext 2736 ax-sep 5248 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-sb 2093 df-mo 2568 df-eu 2598 df-clab 2743 df-cleq 2756 df-clel 2839 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-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-res 5661 df-ima 5662 df-fun 6525 |
| This theorem is referenced by: fcoi1 6740 f1oiOLD 6848 relexpcnv 15050 tsrdir 18638 gicref 19314 ssidcn 23317 idqtop 23768 idhmeo 23835 bj-iminvid 37692 ltrncnvnid 40756 dihmeetlem1N 41919 dihglblem5apreN 41920 diophrw 43345 cnvrcl0 44206 relexpaddss 44299 imaidfu 49736 |
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