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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 23755 | . 2 ⊢ (𝐽 ≃ 𝐾 → 𝐾 ≃ 𝐽) | |
| 2 | hmphsym 23755 | . 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 5125 ≃ chmph 23727 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2706 ax-sep 5278 ax-nul 5288 ax-pow 5347 ax-pr 5414 ax-un 7738 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2808 df-nfc 2884 df-ne 2932 df-ral 3051 df-rex 3060 df-rab 3421 df-v 3466 df-sbc 3773 df-csb 3882 df-dif 3936 df-un 3938 df-in 3940 df-ss 3950 df-nul 4316 df-if 4508 df-pw 4584 df-sn 4609 df-pr 4611 df-op 4615 df-uni 4890 df-iun 4975 df-br 5126 df-opab 5188 df-mpt 5208 df-id 5560 df-xp 5673 df-rel 5674 df-cnv 5675 df-co 5676 df-dm 5677 df-rn 5678 df-res 5679 df-ima 5680 df-suc 6371 df-iota 6495 df-fun 6544 df-fn 6545 df-f 6546 df-fv 6550 df-ov 7417 df-oprab 7418 df-mpo 7419 df-1st 7997 df-2nd 7998 df-1o 8489 df-map 8851 df-top 22867 df-topon 22884 df-cn 23200 df-hmeo 23728 df-hmph 23729 |
| This theorem is referenced by: ismntop 33968 |
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