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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 2235 | . . 3 ⊢ 𝐴 = (Base‘𝐾) |
| 5 | istpsi.j | . . . 4 ⊢ (TopOpen‘𝐾) = 𝐽 | |
| 6 | 5 | eqcomi 2235 | . . 3 ⊢ 𝐽 = (TopOpen‘𝐾) |
| 7 | 4, 6 | istps2 14760 | . 2 ⊢ (𝐾 ∈ TopSp ↔ (𝐽 ∈ Top ∧ 𝐴 = ∪ 𝐽)) |
| 8 | 1, 2, 7 | mpbir2an 950 | 1 ⊢ 𝐾 ∈ TopSp |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1397 ∈ wcel 2202 ∪ cuni 3893 ‘cfv 5326 Basecbs 13084 TopOpenctopn 13325 Topctop 14724 TopSpctps 14757 |
| 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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4204 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-cnex 8123 ax-resscn 8124 ax-1re 8126 ax-addrcl 8129 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-reu 2517 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-ov 6021 df-oprab 6022 df-mpo 6023 df-1st 6303 df-2nd 6304 df-inn 9144 df-2 9202 df-3 9203 df-4 9204 df-5 9205 df-6 9206 df-7 9207 df-8 9208 df-9 9209 df-ndx 13087 df-slot 13088 df-base 13090 df-tset 13181 df-rest 13326 df-topn 13327 df-top 14725 df-topon 14738 df-topsp 14758 |
| This theorem is referenced by: (None) |
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