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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 23355 | . . . . 5 ⊢ ((𝑗 ∈ Haus ∧ 𝑥 ∈ 𝑗) → (𝑗 ↾t 𝑥) ∈ Haus) | |
| 2 | 1 | adantl 483 | . . . 4 ⊢ ((⊤ ∧ (𝑗 ∈ Haus ∧ 𝑥 ∈ 𝑗)) → (𝑗 ↾t 𝑥) ∈ Haus) |
| 3 | haustop 23318 | . . . . . 6 ⊢ (𝑗 ∈ Haus → 𝑗 ∈ Top) | |
| 4 | 3 | ssriv 3921 | . . . . 5 ⊢ Haus ⊆ Top |
| 5 | 4 | a1i 11 | . . . 4 ⊢ (⊤ → Haus ⊆ Top) |
| 6 | 2, 5 | restlly 23470 | . . 3 ⊢ (⊤ → Haus ⊆ Locally Haus) |
| 7 | 6 | mptru 1555 | . 2 ⊢ Haus ⊆ Locally Haus |
| 8 | 7 | sseli 3913 | 1 ⊢ (𝐽 ∈ Haus → 𝐽 ∈ Locally Haus) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 397 ⊤wtru 1549 ∈ wcel 2121 ⊆ wss 3885 (class class class)co 7360 ↾t crest 17378 Topctop 22880 Hauscha 23295 Locally clly 23451 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5202 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-ral 3056 df-rex 3066 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-int 4881 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-map 8769 df-en 8888 df-fin 8891 df-fi 9318 df-rest 17380 df-topgen 17401 df-top 22881 df-topon 22898 df-bases 22933 df-cn 23214 df-haus 23302 df-lly 23453 |
| This theorem is referenced by: (None) |
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