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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 14808 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐽 ∈ Top) | |
| 2 | tsetslid 13334 | . . . . . 6 ⊢ (TopSet = Slot (TopSet‘ndx) ∧ (TopSet‘ndx) ∈ ℕ) | |
| 3 | 2 | slotslfn 13171 | . . . . 5 ⊢ TopSet Fn V |
| 4 | fnrel 5435 | . . . . 5 ⊢ (TopSet Fn V → Rel TopSet) | |
| 5 | 3, 4 | ax-mp 5 | . . . 4 ⊢ Rel TopSet |
| 6 | 0opn 14800 | . . . . 5 ⊢ (𝐽 ∈ Top → ∅ ∈ 𝐽) | |
| 7 | tsettps.j | . . . . 5 ⊢ 𝐽 = (TopSet‘𝐾) | |
| 8 | 6, 7 | eleqtrdi 2324 | . . . 4 ⊢ (𝐽 ∈ Top → ∅ ∈ (TopSet‘𝐾)) |
| 9 | relelfvdm 5680 | . . . 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 14809 | . . . 4 ⊢ (𝐽 ∈ (TopOn‘𝐴) → 𝐴 = ∪ 𝐽) | |
| 13 | eqimss2 3283 | . . . 4 ⊢ (𝐴 = ∪ 𝐽 → ∪ 𝐽 ⊆ 𝐴) | |
| 14 | 12, 13 | syl 14 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝐴) → ∪ 𝐽 ⊆ 𝐴) |
| 15 | sspwuni 4060 | . . 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 13398 | . 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 2202 Vcvv 2803 ⊆ wss 3201 ∅c0 3496 𝒫 cpw 3656 ∪ cuni 3898 dom cdm 4731 Rel wrel 4736 Fn wfn 5328 ‘cfv 5333 Basecbs 13145 TopSetcts 13229 TopOpenctopn 13386 Topctop 14791 TopOnctopon 14804 |
| 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 2204 ax-14 2205 ax-ext 2213 ax-coll 4209 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-1re 8169 ax-addrcl 8172 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-ral 2516 df-rex 2517 df-reu 2518 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-inn 9186 df-2 9244 df-3 9245 df-4 9246 df-5 9247 df-6 9248 df-7 9249 df-8 9250 df-9 9251 df-ndx 13148 df-slot 13149 df-base 13151 df-tset 13242 df-rest 13387 df-topn 13388 df-top 14792 df-topon 14805 |
| This theorem is referenced by: tsettps 14832 cnfldms 15330 cnfldtopn 15333 |
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