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| Mirrors > Home > ILE Home > Th. List > istpsi | GIF version | ||
| Description: Properties that determine a topological space. (Contributed by NM, 20-Oct-2012.) |
| Ref | Expression |
|---|---|
| istpsi.b | ⊢ (Base‘𝐾) = 𝐴 |
| istpsi.j | ⊢ (TopOpen‘𝐾) = 𝐽 |
| istpsi.1 | ⊢ 𝐴 = ∪ 𝐽 |
| istpsi.2 | ⊢ 𝐽 ∈ Top |
| Ref | Expression |
|---|---|
| istpsi | ⊢ 𝐾 ∈ TopSp |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | istpsi.2 | . 2 ⊢ 𝐽 ∈ Top | |
| 2 | istpsi.1 | . 2 ⊢ 𝐴 = ∪ 𝐽 | |
| 3 | istpsi.b | . . . 4 ⊢ (Base‘𝐾) = 𝐴 | |
| 4 | 3 | eqcomi 2242 | . . 3 ⊢ 𝐴 = (Base‘𝐾) |
| 5 | istpsi.j | . . . 4 ⊢ (TopOpen‘𝐾) = 𝐽 | |
| 6 | 5 | eqcomi 2242 | . . 3 ⊢ 𝐽 = (TopOpen‘𝐾) |
| 7 | 4, 6 | istps2 15117 | . 2 ⊢ (𝐾 ∈ TopSp ↔ (𝐽 ∈ Top ∧ 𝐴 = ∪ 𝐽)) |
| 8 | 1, 2, 7 | mpbir2an 955 | 1 ⊢ 𝐾 ∈ TopSp |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1402 ∈ wcel 2209 ∪ cuni 3933 ‘cfv 5375 Basecbs 13335 TopOpenctopn 13577 Topctop 15081 TopSpctps 15114 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4244 ax-sep 4247 ax-pow 4309 ax-pr 4344 ax-un 4576 ax-cnex 8264 ax-resscn 8265 ax-1re 8267 ax-addrcl 8270 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3714 df-pr 3715 df-op 3717 df-uni 3934 df-int 3969 df-iun 4012 df-br 4129 df-opab 4191 df-mpt 4192 df-id 4436 df-xp 4778 df-rel 4779 df-cnv 4780 df-co 4781 df-dm 4782 df-rn 4783 df-res 4784 df-ima 4785 df-iota 5335 df-fun 5377 df-fn 5378 df-f 5379 df-f1 5380 df-fo 5381 df-f1o 5382 df-fv 5383 df-ov 6082 df-oprab 6083 df-mpo 6084 df-1st 6368 df-2nd 6369 df-inn 9288 df-2 9346 df-3 9347 df-4 9348 df-5 9349 df-6 9350 df-7 9351 df-8 9352 df-9 9353 df-ndx 13338 df-slot 13339 df-base 13341 df-tset 13433 df-rest 13578 df-topn 13579 df-top 15082 df-topon 15095 df-topsp 15115 |
| This theorem is referenced by: (None) |
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