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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 2213 | . . 3 ⊢ 𝐴 = (Base‘𝐾) |
| 5 | istpsi.j | . . . 4 ⊢ (TopOpen‘𝐾) = 𝐽 | |
| 6 | 5 | eqcomi 2213 | . . 3 ⊢ 𝐽 = (TopOpen‘𝐾) |
| 7 | 4, 6 | istps2 14672 | . 2 ⊢ (𝐾 ∈ TopSp ↔ (𝐽 ∈ Top ∧ 𝐴 = ∪ 𝐽)) |
| 8 | 1, 2, 7 | mpbir2an 947 | 1 ⊢ 𝐾 ∈ TopSp |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1375 ∈ wcel 2180 ∪ cuni 3867 ‘cfv 5294 Basecbs 12998 TopOpenctopn 13239 Topctop 14636 TopSpctps 14669 |
| 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 617 ax-in2 618 ax-io 713 ax-5 1473 ax-7 1474 ax-gen 1475 ax-ie1 1519 ax-ie2 1520 ax-8 1530 ax-10 1531 ax-11 1532 ax-i12 1533 ax-bndl 1535 ax-4 1536 ax-17 1552 ax-i9 1556 ax-ial 1560 ax-i5r 1561 ax-13 2182 ax-14 2183 ax-ext 2191 ax-coll 4178 ax-sep 4181 ax-pow 4237 ax-pr 4272 ax-un 4501 ax-cnex 8058 ax-resscn 8059 ax-1re 8061 ax-addrcl 8064 |
| This theorem depends on definitions: df-bi 117 df-3an 985 df-tru 1378 df-fal 1381 df-nf 1487 df-sb 1789 df-eu 2060 df-mo 2061 df-clab 2196 df-cleq 2202 df-clel 2205 df-nfc 2341 df-ral 2493 df-rex 2494 df-reu 2495 df-rab 2497 df-v 2781 df-sbc 3009 df-csb 3105 df-dif 3179 df-un 3181 df-in 3183 df-ss 3190 df-nul 3472 df-pw 3631 df-sn 3652 df-pr 3653 df-op 3655 df-uni 3868 df-int 3903 df-iun 3946 df-br 4063 df-opab 4125 df-mpt 4126 df-id 4361 df-xp 4702 df-rel 4703 df-cnv 4704 df-co 4705 df-dm 4706 df-rn 4707 df-res 4708 df-ima 4709 df-iota 5254 df-fun 5296 df-fn 5297 df-f 5298 df-f1 5299 df-fo 5300 df-f1o 5301 df-fv 5302 df-ov 5977 df-oprab 5978 df-mpo 5979 df-1st 6256 df-2nd 6257 df-inn 9079 df-2 9137 df-3 9138 df-4 9139 df-5 9140 df-6 9141 df-7 9142 df-8 9143 df-9 9144 df-ndx 13001 df-slot 13002 df-base 13004 df-tset 13095 df-rest 13240 df-topn 13241 df-top 14637 df-topon 14650 df-topsp 14670 |
| This theorem is referenced by: (None) |
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