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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 5830 | . . 3 ⊢ ◡ I = I | |
| 2 | 1 | eqcomi 2750 | . 2 ⊢ I = ◡ I |
| 3 | funi 6521 | . . 3 ⊢ Fun I | |
| 4 | funeq 6509 | . . 3 ⊢ ( I = ◡ I → (Fun I ↔ Fun ◡ I )) | |
| 5 | 3, 4 | mpbii 235 | . 2 ⊢ ( I = ◡ I → Fun ◡ I ) |
| 6 | funcnvres 6567 | . . 3 ⊢ (Fun ◡ I → ◡( I ↾ 𝐴) = (◡ I ↾ ( I “ 𝐴))) | |
| 7 | imai 6033 | . . . 4 ⊢ ( I “ 𝐴) = 𝐴 | |
| 8 | 1, 7 | reseq12i 5936 | . . 3 ⊢ (◡ I ↾ ( I “ 𝐴)) = ( I ↾ 𝐴) |
| 9 | 6, 8 | eqtrdi 2792 | . 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 1548 I cid 5515 ◡ccnv 5620 ↾ cres 5623 “ cima 5624 Fun wfun 6483 |
| 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-12 2191 ax-ext 2713 ax-sep 5221 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-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 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-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-res 5633 df-ima 5634 df-fun 6491 |
| This theorem is referenced by: fcoi1 6705 f1oiOLD 6810 relexpcnv 14992 tsrdir 18565 gicref 19242 ssidcn 23242 idqtop 23693 idhmeo 23760 bj-iminvid 37570 ltrncnvnid 40634 dihmeetlem1N 41797 dihglblem5apreN 41798 diophrw 43223 cnvrcl0 44084 relexpaddss 44177 imaidfu 49614 |
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