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| Mirrors > Home > ILE Home > Th. List > toponuni | GIF version | ||
| Description: The base set of a topology on a given base set. (Contributed by Mario Carneiro, 13-Aug-2015.) |
| Ref | Expression |
|---|---|
| toponuni | ⊢ (𝐽 ∈ (TopOn‘𝐵) → 𝐵 = ∪ 𝐽) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | istopon 15272 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝐵) ↔ (𝐽 ∈ Top ∧ 𝐵 = ∪ 𝐽)) | |
| 2 | 1 | simprbi 275 | 1 ⊢ (𝐽 ∈ (TopOn‘𝐵) → 𝐵 = ∪ 𝐽) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 ∈ wcel 2209 ∪ cuni 3935 ‘cfv 5380 Topctop 15256 TopOnctopon 15269 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-sbc 3052 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4132 df-opab 4194 df-mpt 4195 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-iota 5340 df-fun 5382 df-fv 5388 df-topon 15270 |
| This theorem is used by: toponunii 15276 toponmax 15284 toponss 15285 toponcom 15286 topgele 15288 topontopn 15296 restuni 15431 resttopon2 15437 lmfval 15452 cnfval 15453 cnpfval 15454 cnprcl2k 15465 ssidcn 15469 iscnp4 15477 cnntr 15484 cncnp 15489 cnptopresti 15497 txtopon 15521 txuni 15522 cnmpt1t 15544 cnmpt2t 15552 cnmpt1res 15555 cnmpt2res 15556 mopnuni 15704 isxms2 15711 limccnp2lem 15935 limccnp2cntop 15936 dvfvalap 15940 dvbss 15944 dvfgg 15947 dvcnp2cntop 15958 dvaddxxbr 15960 dvmulxxbr 15961 |
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