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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 6100 | . . 3 ⊢ ◡ I = I | |
| 2 | 1 | eqcomi 2746 | . 2 ⊢ I = ◡ I |
| 3 | funi 6525 | . . 3 ⊢ Fun I | |
| 4 | funeq 6513 | . . 3 ⊢ ( I = ◡ I → (Fun I ↔ Fun ◡ I )) | |
| 5 | 3, 4 | mpbii 233 | . 2 ⊢ ( I = ◡ I → Fun ◡ I ) |
| 6 | funcnvres 6571 | . . 3 ⊢ (Fun ◡ I → ◡( I ↾ 𝐴) = (◡ I ↾ ( I “ 𝐴))) | |
| 7 | imai 6034 | . . . 4 ⊢ ( I “ 𝐴) = 𝐴 | |
| 8 | 1, 7 | reseq12i 5937 | . . 3 ⊢ (◡ I ↾ ( I “ 𝐴)) = ( I ↾ 𝐴) |
| 9 | 6, 8 | eqtrdi 2788 | . 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 1542 I cid 5519 ◡ccnv 5624 ↾ cres 5627 “ cima 5628 Fun wfun 6487 |
| 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-12 2185 ax-ext 2709 ax-sep 5242 ax-nul 5252 ax-pr 5378 |
| 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-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-ral 3053 df-rex 3062 df-rab 3401 df-v 3443 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4287 df-if 4481 df-sn 4582 df-pr 4584 df-op 4588 df-br 5100 df-opab 5162 df-id 5520 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-fun 6495 |
| This theorem is referenced by: fcoi1 6709 f1oiOLD 6814 relexpcnv 14963 tsrdir 18532 gicref 19206 ssidcn 23204 idqtop 23655 idhmeo 23722 bj-iminvid 37413 ltrncnvnid 40466 dihmeetlem1N 41629 dihglblem5apreN 41630 diophrw 43079 cnvrcl0 43944 relexpaddss 44037 imaidfu 49432 |
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