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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 23686 | . . . . 5 ⊢ ((𝑗 ∈ Haus ∧ 𝑥 ∈ 𝑗) → (𝑗 ↾t 𝑥) ∈ Haus) | |
| 2 | 1 | adantl 487 | . . . 4 ⊢ ((⊤ ∧ (𝑗 ∈ Haus ∧ 𝑥 ∈ 𝑗)) → (𝑗 ↾t 𝑥) ∈ Haus) |
| 3 | haustop 23649 | . . . . . 6 ⊢ (𝑗 ∈ Haus → 𝑗 ∈ Top) | |
| 4 | 3 | ssriv 3912 | . . . . 5 ⊢ Haus ⊆ Top |
| 5 | 4 | a1i 11 | . . . 4 ⊢ (⊤ → Haus ⊆ Top) |
| 6 | 2, 5 | restlly 23802 | . . 3 ⊢ (⊤ → Haus ⊆ Locally Haus) |
| 7 | 6 | mptru 1576 | . 2 ⊢ Haus ⊆ Locally Haus |
| 8 | 7 | sseli 3904 | 1 ⊢ (𝐽 ∈ Haus → 𝐽 ∈ Locally Haus) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ⊤wtru 1570 ∈ wcel 2144 ⊆ wss 3895 (class class class)co 7420 ↾t crest 17591 Topctop 23211 Hauscha 23626 Locally clly 23783 |
| 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-rep 5231 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-3or 1104 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-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 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-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-map 8849 df-en 8974 df-fin 8977 df-fi 9403 df-rest 17593 df-topgen 17614 df-top 23212 df-topon 23229 df-bases 23264 df-cn 23545 df-haus 23633 df-lly 23785 |
| This theorem is used by: (None) |
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