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| Mirrors > Home > ILE Home > Th. List > topontopn | GIF version | ||
| Description: Express the predicate "is a topological space". (Contributed by Mario Carneiro, 13-Aug-2015.) |
| Ref | Expression |
|---|---|
| tsettps.a | ⊢ 𝐴 = (Base‘𝐾) |
| tsettps.j | ⊢ 𝐽 = (TopSet‘𝐾) |
| Ref | Expression |
|---|---|
| topontopn | ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐽 = (TopOpen‘𝐾)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | topontop 14334 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐽 ∈ Top) | |
| 2 | tsetslid 12890 | . . . . . 6 ⊢ (TopSet = Slot (TopSet‘ndx) ∧ (TopSet‘ndx) ∈ ℕ) | |
| 3 | 2 | slotslfn 12729 | . . . . 5 ⊢ TopSet Fn V |
| 4 | fnrel 5357 | . . . . 5 ⊢ (TopSet Fn V → Rel TopSet) | |
| 5 | 3, 4 | ax-mp 5 | . . . 4 ⊢ Rel TopSet |
| 6 | 0opn 14326 | . . . . 5 ⊢ (𝐽 ∈ Top → ∅ ∈ 𝐽) | |
| 7 | tsettps.j | . . . . 5 ⊢ 𝐽 = (TopSet‘𝐾) | |
| 8 | 6, 7 | eleqtrdi 2289 | . . . 4 ⊢ (𝐽 ∈ Top → ∅ ∈ (TopSet‘𝐾)) |
| 9 | relelfvdm 5593 | . . . 4 ⊢ ((Rel TopSet ∧ ∅ ∈ (TopSet‘𝐾)) → 𝐾 ∈ dom TopSet) | |
| 10 | 5, 8, 9 | sylancr 414 | . . 3 ⊢ (𝐽 ∈ Top → 𝐾 ∈ dom TopSet) |
| 11 | 1, 10 | syl 14 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐾 ∈ dom TopSet) |
| 12 | toponuni 14335 | . . . 4 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐴 = ∪ 𝐽) | |
| 13 | eqimss2 3239 | . . . 4 ⊢ (𝐴 = ∪ 𝐽 → ∪ 𝐽 ⊆ 𝐴) | |
| 14 | 12, 13 | syl 14 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝐴) → ∪ 𝐽 ⊆ 𝐴) |
| 15 | sspwuni 4002 | . . 3 ⊢ (𝐽 ⊆ 𝒫 𝐴 ↔ ∪ 𝐽 ⊆ 𝐴) | |
| 16 | 14, 15 | sylibr 134 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐽 ⊆ 𝒫 𝐴) |
| 17 | tsettps.a | . . 3 ⊢ 𝐴 = (Base‘𝐾) | |
| 18 | 17, 7 | topnidg 12954 | . 2 ⊢ ((𝐾 ∈ dom TopSet ∧ 𝐽 ⊆ 𝒫 𝐴) → 𝐽 = (TopOpen‘𝐾)) |
| 19 | 11, 16, 18 | syl2anc 411 | 1 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐽 = (TopOpen‘𝐾)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1364 ∈ wcel 2167 Vcvv 2763 ⊆ wss 3157 ∅c0 3451 𝒫 cpw 3606 ∪ cuni 3840 dom cdm 4664 Rel wrel 4669 Fn wfn 5254 ‘cfv 5259 Basecbs 12703 TopSetcts 12786 TopOpenctopn 12942 Topctop 14317 TopOnctopon 14330 |
| 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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-coll 4149 ax-sep 4152 ax-pow 4208 ax-pr 4243 ax-un 4469 ax-setind 4574 ax-cnex 7987 ax-resscn 7988 ax-1re 7990 ax-addrcl 7993 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-ral 2480 df-rex 2481 df-reu 2482 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-nul 3452 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-int 3876 df-iun 3919 df-br 4035 df-opab 4096 df-mpt 4097 df-id 4329 df-xp 4670 df-rel 4671 df-cnv 4672 df-co 4673 df-dm 4674 df-rn 4675 df-res 4676 df-ima 4677 df-iota 5220 df-fun 5261 df-fn 5262 df-f 5263 df-f1 5264 df-fo 5265 df-f1o 5266 df-fv 5267 df-ov 5928 df-oprab 5929 df-mpo 5930 df-1st 6207 df-2nd 6208 df-inn 9008 df-2 9066 df-3 9067 df-4 9068 df-5 9069 df-6 9070 df-7 9071 df-8 9072 df-9 9073 df-ndx 12706 df-slot 12707 df-base 12709 df-tset 12799 df-rest 12943 df-topn 12944 df-top 14318 df-topon 14331 |
| This theorem is referenced by: tsettps 14358 cnfldms 14856 cnfldtopn 14859 |
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