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Mirrors > Home > MPE Home > Th. List > Mathboxes > restclsseplem | Structured version Visualization version GIF version |
Description: Lemma for restclssep 46209. (Contributed by Zhi Wang, 2-Sep-2024.) |
Ref | Expression |
---|---|
restcls2.1 | ⊢ (𝜑 → 𝐽 ∈ Top) |
restcls2.2 | ⊢ (𝜑 → 𝑋 = ∪ 𝐽) |
restcls2.3 | ⊢ (𝜑 → 𝑌 ⊆ 𝑋) |
restcls2.4 | ⊢ (𝜑 → 𝐾 = (𝐽 ↾t 𝑌)) |
restcls2.5 | ⊢ (𝜑 → 𝑆 ∈ (Clsd‘𝐾)) |
restclsseplem.6 | ⊢ (𝜑 → (𝑆 ∩ 𝑇) = ∅) |
restclsseplem.7 | ⊢ (𝜑 → 𝑇 ⊆ 𝑌) |
Ref | Expression |
---|---|
restclsseplem | ⊢ (𝜑 → (((cls‘𝐽)‘𝑆) ∩ 𝑇) = ∅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | restcls2.1 | . . . . 5 ⊢ (𝜑 → 𝐽 ∈ Top) | |
2 | restcls2.2 | . . . . 5 ⊢ (𝜑 → 𝑋 = ∪ 𝐽) | |
3 | restcls2.3 | . . . . 5 ⊢ (𝜑 → 𝑌 ⊆ 𝑋) | |
4 | restcls2.4 | . . . . 5 ⊢ (𝜑 → 𝐾 = (𝐽 ↾t 𝑌)) | |
5 | restcls2.5 | . . . . 5 ⊢ (𝜑 → 𝑆 ∈ (Clsd‘𝐾)) | |
6 | 1, 2, 3, 4, 5 | restcls2 46207 | . . . 4 ⊢ (𝜑 → 𝑆 = (((cls‘𝐽)‘𝑆) ∩ 𝑌)) |
7 | 6 | ineq1d 4145 | . . 3 ⊢ (𝜑 → (𝑆 ∩ 𝑇) = ((((cls‘𝐽)‘𝑆) ∩ 𝑌) ∩ 𝑇)) |
8 | inass 4153 | . . 3 ⊢ ((((cls‘𝐽)‘𝑆) ∩ 𝑌) ∩ 𝑇) = (((cls‘𝐽)‘𝑆) ∩ (𝑌 ∩ 𝑇)) | |
9 | 7, 8 | eqtrdi 2794 | . 2 ⊢ (𝜑 → (𝑆 ∩ 𝑇) = (((cls‘𝐽)‘𝑆) ∩ (𝑌 ∩ 𝑇))) |
10 | restclsseplem.6 | . 2 ⊢ (𝜑 → (𝑆 ∩ 𝑇) = ∅) | |
11 | restclsseplem.7 | . . . 4 ⊢ (𝜑 → 𝑇 ⊆ 𝑌) | |
12 | sseqin2 4149 | . . . 4 ⊢ (𝑇 ⊆ 𝑌 ↔ (𝑌 ∩ 𝑇) = 𝑇) | |
13 | 11, 12 | sylib 217 | . . 3 ⊢ (𝜑 → (𝑌 ∩ 𝑇) = 𝑇) |
14 | 13 | ineq2d 4146 | . 2 ⊢ (𝜑 → (((cls‘𝐽)‘𝑆) ∩ (𝑌 ∩ 𝑇)) = (((cls‘𝐽)‘𝑆) ∩ 𝑇)) |
15 | 9, 10, 14 | 3eqtr3rd 2787 | 1 ⊢ (𝜑 → (((cls‘𝐽)‘𝑆) ∩ 𝑇) = ∅) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2106 ∩ cin 3886 ⊆ wss 3887 ∅c0 4256 ∪ cuni 4839 ‘cfv 6433 (class class class)co 7275 ↾t crest 17131 Topctop 22042 Clsdccld 22167 clsccl 22169 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-iin 4927 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-en 8734 df-fin 8737 df-fi 9170 df-rest 17133 df-topgen 17154 df-top 22043 df-topon 22060 df-bases 22096 df-cld 22170 df-cls 22172 |
This theorem is referenced by: restclssep 46209 |
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