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| Mirrors > Home > MPE Home > Th. List > hmphsymb | Structured version Visualization version GIF version | ||
| Description: "Is homeomorphic to" is symmetric. (Contributed by FL, 22-Feb-2007.) |
| Ref | Expression |
|---|---|
| hmphsymb | ⊢ (𝐽 ≃ 𝐾 ↔ 𝐾 ≃ 𝐽) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | hmphsym 23675 | . 2 ⊢ (𝐽 ≃ 𝐾 → 𝐾 ≃ 𝐽) | |
| 2 | hmphsym 23675 | . 2 ⊢ (𝐾 ≃ 𝐽 → 𝐽 ≃ 𝐾) | |
| 3 | 1, 2 | impbii 209 | 1 ⊢ (𝐽 ≃ 𝐾 ↔ 𝐾 ≃ 𝐽) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 class class class wbr 5109 ≃ chmph 23647 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5253 ax-nul 5263 ax-pow 5322 ax-pr 5389 ax-un 7713 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-ral 3046 df-rex 3055 df-rab 3409 df-v 3452 df-sbc 3756 df-csb 3865 df-dif 3919 df-un 3921 df-in 3923 df-ss 3933 df-nul 4299 df-if 4491 df-pw 4567 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-iun 4959 df-br 5110 df-opab 5172 df-mpt 5191 df-id 5535 df-xp 5646 df-rel 5647 df-cnv 5648 df-co 5649 df-dm 5650 df-rn 5651 df-res 5652 df-ima 5653 df-suc 6340 df-iota 6466 df-fun 6515 df-fn 6516 df-f 6517 df-fv 6521 df-ov 7392 df-oprab 7393 df-mpo 7394 df-1st 7970 df-2nd 7971 df-1o 8436 df-map 8803 df-top 22787 df-topon 22804 df-cn 23120 df-hmeo 23648 df-hmph 23649 |
| This theorem is referenced by: ismntop 34022 |
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