| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > topontopn | Structured version Visualization version GIF version | ||
| Description: Express the predicate "is a topological space." (Contributed by Mario Carneiro, 13-Aug-2015.) |
| Ref | Expression |
|---|---|
| tsettps.a | ⊢ 𝐴 = (Base‘𝐾) |
| tsettps.j | ⊢ 𝐽 = (TopSet‘𝐾) |
| Ref | Expression |
|---|---|
| topontopn | ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐽 = (TopOpen‘𝐾)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | toponuni 22901 | . . . 4 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐴 = ∪ 𝐽) | |
| 2 | eqimss2 3976 | . . . 4 ⊢ (𝐴 = ∪ 𝐽 → ∪ 𝐽 ⊆ 𝐴) | |
| 3 | 1, 2 | syl 17 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝐴) → ∪ 𝐽 ⊆ 𝐴) |
| 4 | sspwuni 5032 | . . 3 ⊢ (𝐽 ⊆ 𝒫 𝐴 ↔ ∪ 𝐽 ⊆ 𝐴) | |
| 5 | 3, 4 | sylibr 236 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐽 ⊆ 𝒫 𝐴) |
| 6 | tsettps.a | . . 3 ⊢ 𝐴 = (Base‘𝐾) | |
| 7 | tsettps.j | . . 3 ⊢ 𝐽 = (TopSet‘𝐾) | |
| 8 | 6, 7 | topnid 17393 | . 2 ⊢ (𝐽 ⊆ 𝒫 𝐴 → 𝐽 = (TopOpen‘𝐾)) |
| 9 | 5, 8 | syl 17 | 1 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐽 = (TopOpen‘𝐾)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1548 ∈ wcel 2121 ⊆ wss 3885 𝒫 cpw 4532 ∪ cuni 4841 ‘cfv 6489 Basecbs 17174 TopSetcts 17221 TopOpenctopn 17379 TopOnctopon 22897 |
| 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-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-ov 7363 df-oprab 7364 df-mpo 7365 df-1st 7935 df-2nd 7936 df-rest 17380 df-topn 17381 df-topon 22898 |
| This theorem is referenced by: tsettps 22928 xrstopn 23195 cnfldms 24762 cnfldtopn 24768 |
| Copyright terms: Public domain | W3C validator |