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| Mirrors > Home > MPE Home > Th. List > invisoinvr | Structured version Visualization version GIF version | ||
| Description: The inverse of an isomorphism is invers to the isomorphism. (Contributed by AV, 9-Apr-2020.) |
| Ref | Expression |
|---|---|
| invisoinv.b | ⊢ 𝐵 = (Base‘𝐶) |
| invisoinv.i | ⊢ 𝐼 = (Iso‘𝐶) |
| invisoinv.n | ⊢ 𝑁 = (Inv‘𝐶) |
| invisoinv.c | ⊢ (𝜑 → 𝐶 ∈ Cat) |
| invisoinv.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| invisoinv.y | ⊢ (𝜑 → 𝑌 ∈ 𝐵) |
| invisoinv.f | ⊢ (𝜑 → 𝐹 ∈ (𝑋𝐼𝑌)) |
| Ref | Expression |
|---|---|
| invisoinvr | ⊢ (𝜑 → 𝐹(𝑋𝑁𝑌)((𝑋𝑁𝑌)‘𝐹)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | invisoinv.b | . . 3 ⊢ 𝐵 = (Base‘𝐶) | |
| 2 | invisoinv.i | . . 3 ⊢ 𝐼 = (Iso‘𝐶) | |
| 3 | invisoinv.n | . . 3 ⊢ 𝑁 = (Inv‘𝐶) | |
| 4 | invisoinv.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 5 | invisoinv.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 6 | invisoinv.y | . . 3 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
| 7 | invisoinv.f | . . 3 ⊢ (𝜑 → 𝐹 ∈ (𝑋𝐼𝑌)) | |
| 8 | 1, 2, 3, 4, 5, 6, 7 | invisoinvl 17752 | . 2 ⊢ (𝜑 → ((𝑋𝑁𝑌)‘𝐹)(𝑌𝑁𝑋)𝐹) |
| 9 | 1, 3, 4, 5, 6 | invsym 17724 | . 2 ⊢ (𝜑 → (𝐹(𝑋𝑁𝑌)((𝑋𝑁𝑌)‘𝐹) ↔ ((𝑋𝑁𝑌)‘𝐹)(𝑌𝑁𝑋)𝐹)) |
| 10 | 8, 9 | mpbird 259 | 1 ⊢ (𝜑 → 𝐹(𝑋𝑁𝑌)((𝑋𝑁𝑌)‘𝐹)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1548 ∈ wcel 2121 class class class wbr 5075 ‘cfv 6489 (class class class)co 7360 Basecbs 17174 Catccat 17625 Invcinv 17707 Isociso 17708 |
| 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-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5202 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 |
| 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-nfc 2890 df-ne 2937 df-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 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-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-1st 7935 df-2nd 7936 df-cat 17629 df-cid 17630 df-sect 17709 df-inv 17710 df-iso 17711 |
| This theorem is referenced by: invcoisoid 17754 funciso 17836 fuciso 17940 |
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