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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 14879 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐽 ∈ Top) | |
| 2 | tsetslid 13401 | . . . . . 6 ⊢ (TopSet = Slot (TopSet‘ndx) ∧ (TopSet‘ndx) ∈ ℕ) | |
| 3 | 2 | slotslfn 13238 | . . . . 5 ⊢ TopSet Fn V |
| 4 | fnrel 5454 | . . . . 5 ⊢ (TopSet Fn V → Rel TopSet) | |
| 5 | 3, 4 | ax-mp 5 | . . . 4 ⊢ Rel TopSet |
| 6 | 0opn 14871 | . . . . 5 ⊢ (𝐽 ∈ Top → ∅ ∈ 𝐽) | |
| 7 | tsettps.j | . . . . 5 ⊢ 𝐽 = (TopSet‘𝐾) | |
| 8 | 6, 7 | eleqtrdi 2325 | . . . 4 ⊢ (𝐽 ∈ Top → ∅ ∈ (TopSet‘𝐾)) |
| 9 | relelfvdm 5702 | . . . 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 14880 | . . . 4 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐴 = ∪ 𝐽) | |
| 13 | eqimss2 3293 | . . . 4 ⊢ (𝐴 = ∪ 𝐽 → ∪ 𝐽 ⊆ 𝐴) | |
| 14 | 12, 13 | syl 14 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝐴) → ∪ 𝐽 ⊆ 𝐴) |
| 15 | sspwuni 4076 | . . 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 13465 | . 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 1398 ∈ wcel 2203 Vcvv 2813 ⊆ wss 3211 ∅c0 3508 𝒫 cpw 3669 ∪ cuni 3914 dom cdm 4749 Rel wrel 4754 Fn wfn 5347 ‘cfv 5352 Basecbs 13212 TopSetcts 13296 TopOpenctopn 13453 Topctop 14862 TopOnctopon 14875 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-coll 4225 ax-sep 4228 ax-pow 4287 ax-pr 4322 ax-un 4554 ax-setind 4659 ax-cnex 8218 ax-resscn 8219 ax-1re 8221 ax-addrcl 8224 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-ral 2525 df-rex 2526 df-reu 2527 df-rab 2529 df-v 2815 df-sbc 3043 df-csb 3139 df-dif 3213 df-un 3215 df-in 3217 df-ss 3224 df-nul 3509 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-int 3950 df-iun 3993 df-br 4110 df-opab 4172 df-mpt 4173 df-id 4414 df-xp 4755 df-rel 4756 df-cnv 4757 df-co 4758 df-dm 4759 df-rn 4760 df-res 4761 df-ima 4762 df-iota 5312 df-fun 5354 df-fn 5355 df-f 5356 df-f1 5357 df-fo 5358 df-f1o 5359 df-fv 5360 df-ov 6053 df-oprab 6054 df-mpo 6055 df-1st 6334 df-2nd 6335 df-inn 9238 df-2 9296 df-3 9297 df-4 9298 df-5 9299 df-6 9300 df-7 9301 df-8 9302 df-9 9303 df-ndx 13215 df-slot 13216 df-base 13218 df-tset 13309 df-rest 13454 df-topn 13455 df-top 14863 df-topon 14876 |
| This theorem is referenced by: tsettps 14903 cnfldms 15401 cnfldtopn 15404 |
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