| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > hmeocnv | Structured version Visualization version GIF version | ||
| Description: The converse of a homeomorphism is a homeomorphism. (Contributed by FL, 5-Mar-2007.) (Revised by Mario Carneiro, 22-Aug-2015.) |
| Ref | Expression |
|---|---|
| hmeocnv | ⊢ (𝐹 ∈ (𝐽Homeo𝐾) → ◡𝐹 ∈ (𝐾Homeo𝐽)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | hmeocnvcn 24107 | . 2 ⊢ (𝐹 ∈ (𝐽Homeo𝐾) → ◡𝐹 ∈ (𝐾 Cn 𝐽)) | |
| 2 | hmeocn 24106 | . . . . 5 ⊢ (𝐹 ∈ (𝐽Homeo𝐾) → 𝐹 ∈ (𝐽 Cn 𝐾)) | |
| 3 | eqid 2763 | . . . . . 6 ⊢ ∪ 𝐽 = ∪ 𝐽 | |
| 4 | eqid 2763 | . . . . . 6 ⊢ ∪ 𝐾 = ∪ 𝐾 | |
| 5 | 3, 4 | cnf 23591 | . . . . 5 ⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐹:∪ 𝐽⟶∪ 𝐾) |
| 6 | frel 6734 | . . . . 5 ⊢ (𝐹:∪ 𝐽⟶∪ 𝐾 → Rel 𝐹) | |
| 7 | 2, 5, 6 | 3syl 19 | . . . 4 ⊢ (𝐹 ∈ (𝐽Homeo𝐾) → Rel 𝐹) |
| 8 | dfrel2 6192 | . . . 4 ⊢ (Rel 𝐹 ↔ ◡◡𝐹 = 𝐹) | |
| 9 | 7, 8 | sylib 221 | . . 3 ⊢ (𝐹 ∈ (𝐽Homeo𝐾) → ◡◡𝐹 = 𝐹) |
| 10 | 9, 2 | eqeltrd 2864 | . 2 ⊢ (𝐹 ∈ (𝐽Homeo𝐾) → ◡◡𝐹 ∈ (𝐽 Cn 𝐾)) |
| 11 | ishmeo 24105 | . 2 ⊢ (◡𝐹 ∈ (𝐾Homeo𝐽) ↔ (◡𝐹 ∈ (𝐾 Cn 𝐽) ∧ ◡◡𝐹 ∈ (𝐽 Cn 𝐾))) | |
| 12 | 1, 10, 11 | sylanbrc 595 | 1 ⊢ (𝐹 ∈ (𝐽Homeo𝐾) → ◡𝐹 ∈ (𝐾Homeo𝐽)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2147 ∪ cuni 4870 ◡ccnv 5654 Rel wrel 5660 ⟶wf 6551 (class class class)co 7440 Cn ccn 23569 Homeochmeo 24099 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7772 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-fv 6563 df-ov 7443 df-oprab 7444 df-mpo 7445 df-map 8874 df-top 23239 df-topon 23256 df-cn 23572 df-hmeo 24101 |
| This theorem is used by: hmeocnvb 24120 hmphsym 24128 xpstopnlem2 24157 |
| Copyright terms: Public domain | W3C validator |