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| Mirrors > Home > MPE Home > Th. List > topontopi | Structured version Visualization version GIF version | ||
| Description: A topology on a given base set is a topology. (Contributed by Mario Carneiro, 13-Aug-2015.) |
| Ref | Expression |
|---|---|
| topontopi.1 | ⊢ 𝐽 ∈ (TopOn‘𝐵) |
| Ref | Expression |
|---|---|
| topontopi | ⊢ 𝐽 ∈ Top |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | topontopi.1 | . 2 ⊢ 𝐽 ∈ (TopOn‘𝐵) | |
| 2 | topontop 23231 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝐵) → 𝐽 ∈ Top) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ 𝐽 ∈ Top |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2144 ‘cfv 6538 Topctop 23211 TopOnctopon 23228 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-iota 6494 df-fun 6540 df-fv 6546 df-topon 23229 |
| This theorem is used by: sn0top 23317 indistop 23320 letop 23524 dfac14 23937 cnfldtop 25102 sszcld 25137 iitop 25201 limccnp2 26212 cxpcn3 27076 lmlim 34579 pnfneige0 34583 sxbrsigalem4 34919 poimir 38572 islptre 46631 fourierdlem62 47178 |
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