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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 6098 | . . 3 ⊢ ◡ I = I | |
| 2 | 1 | eqcomi 2744 | . 2 ⊢ I = ◡ I |
| 3 | funi 6523 | . . 3 ⊢ Fun I | |
| 4 | funeq 6511 | . . 3 ⊢ ( I = ◡ I → (Fun I ↔ Fun ◡ I )) | |
| 5 | 3, 4 | mpbii 233 | . 2 ⊢ ( I = ◡ I → Fun ◡ I ) |
| 6 | funcnvres 6569 | . . 3 ⊢ (Fun ◡ I → ◡( I ↾ 𝐴) = (◡ I ↾ ( I “ 𝐴))) | |
| 7 | imai 6032 | . . . 4 ⊢ ( I “ 𝐴) = 𝐴 | |
| 8 | 1, 7 | reseq12i 5935 | . . 3 ⊢ (◡ I ↾ ( I “ 𝐴)) = ( I ↾ 𝐴) |
| 9 | 6, 8 | eqtrdi 2786 | . 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 5517 ◡ccnv 5622 ↾ cres 5625 “ cima 5626 Fun wfun 6485 |
| 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 2183 ax-ext 2707 ax-sep 5240 ax-nul 5250 ax-pr 5376 |
| 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 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-ral 3051 df-rex 3060 df-rab 3399 df-v 3441 df-dif 3903 df-un 3905 df-in 3907 df-ss 3917 df-nul 4285 df-if 4479 df-sn 4580 df-pr 4582 df-op 4586 df-br 5098 df-opab 5160 df-id 5518 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-fun 6493 |
| This theorem is referenced by: fcoi1 6707 f1oiOLD 6812 relexpcnv 14960 tsrdir 18529 gicref 19203 ssidcn 23201 idqtop 23652 idhmeo 23719 bj-iminvid 37369 ltrncnvnid 40422 dihmeetlem1N 41585 dihglblem5apreN 41586 diophrw 43038 cnvrcl0 43903 relexpaddss 43996 imaidfu 49392 |
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