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| Mirrors > Home > MPE Home > Th. List > tpsuni | Structured version Visualization version GIF version | ||
| Description: The base set of a topological space. (Contributed by FL, 27-Jun-2014.) |
| Ref | Expression |
|---|---|
| istps.a | ⊢ 𝐴 = (Base‘𝐾) |
| istps.j | ⊢ 𝐽 = (TopOpen‘𝐾) |
| Ref | Expression |
|---|---|
| tpsuni | ⊢ (𝐾 ∈ TopSp → 𝐴 = ∪ 𝐽) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | istps.a | . . 3 ⊢ 𝐴 = (Base‘𝐾) | |
| 2 | istps.j | . . 3 ⊢ 𝐽 = (TopOpen‘𝐾) | |
| 3 | 1, 2 | istps2 22879 | . 2 ⊢ (𝐾 ∈ TopSp ↔ (𝐽 ∈ Top ∧ 𝐴 = ∪ 𝐽)) |
| 4 | 3 | simprbi 496 | 1 ⊢ (𝐾 ∈ TopSp → 𝐴 = ∪ 𝐽) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2113 ∪ cuni 4863 ‘cfv 6492 Basecbs 17136 TopOpenctopn 17341 Topctop 22837 TopSpctps 22876 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-iota 6448 df-fun 6494 df-fv 6500 df-top 22838 df-topon 22855 df-topsp 22877 |
| This theorem is referenced by: mreclatdemoBAD 23040 haustsms 24080 cnextucn 24246 ressxms 24469 rlmbn 25317 rrhf 34155 esumcocn 34237 sibf0 34491 sibfof 34497 sitgclg 34499 sitgaddlemb 34505 sitmcl 34508 binomcxplemdvbinom 44590 binomcxplemnotnn0 44593 qndenserrn 46539 |
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