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| Mirrors > Home > MPE Home > Th. List > hauslly | Structured version Visualization version GIF version | ||
| Description: A Hausdorff space is locally Hausdorff. (Contributed by Mario Carneiro, 2-Mar-2015.) |
| Ref | Expression |
|---|---|
| hauslly | ⊢ (𝐽 ∈ Haus → 𝐽 ∈ Locally Haus) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | resthaus 23633 | . . . . 5 ⊢ ((𝑗 ∈ Haus ∧ 𝑥 ∈ 𝑗) → (𝑗 ↾t 𝑥) ∈ Haus) | |
| 2 | 1 | adantl 487 | . . . 4 ⊢ ((⊤ ∧ (𝑗 ∈ Haus ∧ 𝑥 ∈ 𝑗)) → (𝑗 ↾t 𝑥) ∈ Haus) |
| 3 | haustop 23596 | . . . . . 6 ⊢ (𝑗 ∈ Haus → 𝑗 ∈ Top) | |
| 4 | 3 | ssriv 3935 | . . . . 5 ⊢ Haus ⊆ Top |
| 5 | 4 | a1i 11 | . . . 4 ⊢ (⊤ → Haus ⊆ Top) |
| 6 | 2, 5 | restlly 23749 | . . 3 ⊢ (⊤ → Haus ⊆ Locally Haus) |
| 7 | 6 | mptru 1577 | . 2 ⊢ Haus ⊆ Locally Haus |
| 8 | 7 | sseli 3927 | 1 ⊢ (𝐽 ∈ Haus → 𝐽 ∈ Locally Haus) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ⊤wtru 1571 ∈ wcel 2145 ⊆ wss 3899 (class class class)co 7409 ↾t crest 17538 Topctop 23158 Hauscha 23573 Locally clly 23730 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 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-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6484 df-fun 6530 df-fn 6531 df-f 6532 df-f1 6533 df-fo 6534 df-f1o 6535 df-fv 6536 df-ov 7412 df-oprab 7413 df-mpo 7414 df-om 7862 df-1st 7985 df-2nd 7986 df-map 8828 df-en 8953 df-fin 8956 df-fi 9381 df-rest 17540 df-topgen 17561 df-top 23159 df-topon 23176 df-bases 23211 df-cn 23492 df-haus 23580 df-lly 23732 |
| This theorem is used by: (None) |
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