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| Mirrors > Home > ILE Home > Th. List > stoig | GIF version | ||
| Description: The topological space built with a subspace topology. (Contributed by FL, 5-Jan-2009.) (Proof shortened by Mario Carneiro, 1-May-2015.) |
| Ref | Expression |
|---|---|
| restuni.1 | ⊢ 𝑋 = ∪ 𝐽 |
| Ref | Expression |
|---|---|
| stoig | ⊢ ((𝐽 ∈ Top ∧ 𝐴 ⊆ 𝑋) → {〈(Base‘ndx), 𝐴〉, 〈(TopSet‘ndx), (𝐽 ↾t 𝐴)〉} ∈ TopSp) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | restuni.1 | . . . 4 ⊢ 𝑋 = ∪ 𝐽 | |
| 2 | 1 | toptopon 14651 | . . 3 ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘𝑋)) |
| 3 | resttopon 14804 | . . 3 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐴 ⊆ 𝑋) → (𝐽 ↾t 𝐴) ∈ (TopOn‘𝐴)) | |
| 4 | 2, 3 | sylanb 284 | . 2 ⊢ ((𝐽 ∈ Top ∧ 𝐴 ⊆ 𝑋) → (𝐽 ↾t 𝐴) ∈ (TopOn‘𝐴)) |
| 5 | eqid 2207 | . . 3 ⊢ {〈(Base‘ndx), 𝐴〉, 〈(TopSet‘ndx), (𝐽 ↾t 𝐴)〉} = {〈(Base‘ndx), 𝐴〉, 〈(TopSet‘ndx), (𝐽 ↾t 𝐴)〉} | |
| 6 | 5 | eltpsg 14673 | . 2 ⊢ ((𝐽 ↾t 𝐴) ∈ (TopOn‘𝐴) → {〈(Base‘ndx), 𝐴〉, 〈(TopSet‘ndx), (𝐽 ↾t 𝐴)〉} ∈ TopSp) |
| 7 | 4, 6 | syl 14 | 1 ⊢ ((𝐽 ∈ Top ∧ 𝐴 ⊆ 𝑋) → {〈(Base‘ndx), 𝐴〉, 〈(TopSet‘ndx), (𝐽 ↾t 𝐴)〉} ∈ TopSp) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1373 ∈ wcel 2178 ⊆ wss 3175 {cpr 3645 〈cop 3647 ∪ cuni 3865 ‘cfv 5291 (class class class)co 5969 ndxcnx 12990 Basecbs 12993 TopSetcts 13076 ↾t crest 13232 Topctop 14630 TopOnctopon 14643 TopSpctps 14663 |
| 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 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2180 ax-14 2181 ax-ext 2189 ax-coll 4176 ax-sep 4179 ax-pow 4235 ax-pr 4270 ax-un 4499 ax-setind 4604 ax-cnex 8053 ax-resscn 8054 ax-1cn 8055 ax-1re 8056 ax-icn 8057 ax-addcl 8058 ax-addrcl 8059 ax-mulcl 8060 ax-addcom 8062 ax-addass 8064 ax-i2m1 8067 ax-0lt1 8068 ax-0id 8070 ax-rnegex 8071 ax-pre-ltirr 8074 ax-pre-lttrn 8076 ax-pre-ltadd 8078 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ne 2379 df-nel 2474 df-ral 2491 df-rex 2492 df-reu 2493 df-rab 2495 df-v 2779 df-sbc 3007 df-csb 3103 df-dif 3177 df-un 3179 df-in 3181 df-ss 3188 df-nul 3470 df-pw 3629 df-sn 3650 df-pr 3651 df-op 3653 df-uni 3866 df-int 3901 df-iun 3944 df-br 4061 df-opab 4123 df-mpt 4124 df-id 4359 df-xp 4700 df-rel 4701 df-cnv 4702 df-co 4703 df-dm 4704 df-rn 4705 df-res 4706 df-ima 4707 df-iota 5252 df-fun 5293 df-fn 5294 df-f 5295 df-f1 5296 df-fo 5297 df-f1o 5298 df-fv 5299 df-ov 5972 df-oprab 5973 df-mpo 5974 df-1st 6251 df-2nd 6252 df-pnf 8146 df-mnf 8147 df-ltxr 8149 df-inn 9074 df-2 9132 df-3 9133 df-4 9134 df-5 9135 df-6 9136 df-7 9137 df-8 9138 df-9 9139 df-ndx 12996 df-slot 12997 df-base 12999 df-tset 13089 df-rest 13234 df-topn 13235 df-topgen 13253 df-top 14631 df-topon 14644 df-topsp 14664 df-bases 14676 |
| This theorem is referenced by: (None) |
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