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Mirrors > Home > MPE Home > Th. List > ntrss2 | Structured version Visualization version GIF version |
Description: A subset includes its interior. (Contributed by NM, 3-Oct-2007.) (Revised by Mario Carneiro, 11-Nov-2013.) |
Ref | Expression |
---|---|
clscld.1 | ⊢ 𝑋 = ∪ 𝐽 |
Ref | Expression |
---|---|
ntrss2 | ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋) → ((int‘𝐽)‘𝑆) ⊆ 𝑆) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | clscld.1 | . . 3 ⊢ 𝑋 = ∪ 𝐽 | |
2 | 1 | ntrval 22236 | . 2 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋) → ((int‘𝐽)‘𝑆) = ∪ (𝐽 ∩ 𝒫 𝑆)) |
3 | inss2 4169 | . . . 4 ⊢ (𝐽 ∩ 𝒫 𝑆) ⊆ 𝒫 𝑆 | |
4 | 3 | unissi 4853 | . . 3 ⊢ ∪ (𝐽 ∩ 𝒫 𝑆) ⊆ ∪ 𝒫 𝑆 |
5 | unipw 5379 | . . 3 ⊢ ∪ 𝒫 𝑆 = 𝑆 | |
6 | 4, 5 | sseqtri 3962 | . 2 ⊢ ∪ (𝐽 ∩ 𝒫 𝑆) ⊆ 𝑆 |
7 | 2, 6 | eqsstrdi 3980 | 1 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋) → ((int‘𝐽)‘𝑆) ⊆ 𝑆) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 397 = wceq 1539 ∈ wcel 2104 ∩ cin 3891 ⊆ wss 3892 𝒫 cpw 4539 ∪ cuni 4844 ‘cfv 6458 Topctop 22091 intcnt 22217 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-rep 5218 ax-sep 5232 ax-nul 5239 ax-pow 5297 ax-pr 5361 ax-un 7620 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-ral 3063 df-rex 3072 df-reu 3305 df-rab 3306 df-v 3439 df-sbc 3722 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4566 df-pr 4568 df-op 4572 df-uni 4845 df-iun 4933 df-br 5082 df-opab 5144 df-mpt 5165 df-id 5500 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-iota 6410 df-fun 6460 df-fn 6461 df-f 6462 df-f1 6463 df-fo 6464 df-f1o 6465 df-fv 6466 df-top 22092 df-ntr 22220 |
This theorem is referenced by: ntrin 22261 neiint 22304 opnnei 22320 topssnei 22324 maxlp 22347 restntr 22382 iscnp4 22463 cnntri 22471 cnntr 22475 cnprest 22489 llycmpkgen2 22750 xkococnlem 22859 flimopn 23175 fclsneii 23217 fcfnei 23235 subgntr 23307 iccntr 24033 rectbntr0 24044 bcthlem5 24541 limcflf 25094 dvbss 25114 perfdvf 25116 dvreslem 25122 dvcnp2 25133 dvnres 25144 dvaddbr 25151 dvcmulf 25158 dvmptres2 25175 dvmptcmul 25177 dvmptntr 25184 dvcnvre 25232 taylthlem1 25581 taylthlem2 25582 ulmdvlem3 25610 lgamucov2 26237 ubthlem1 29281 kur14lem6 33222 cvmlift2lem12 33325 opnbnd 34563 opnregcld 34568 cldregopn 34569 dvresntr 43688 |
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