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Mirrors > Home > MPE Home > Th. List > haust1 | Structured version Visualization version Unicode version |
Description: A Hausdorff space is a T1 space. (Contributed by FL, 11-Jun-2007.) (Proof shortened by Mario Carneiro, 24-Aug-2015.) |
Ref | Expression |
---|---|
haust1 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2622 |
. . . . . . . . 9
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2 | 1 | hausnei 21132 |
. . . . . . . 8
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3 | simprr1 1109 |
. . . . . . . . . . 11
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4 | noel 3919 |
. . . . . . . . . . . . 13
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5 | simprr3 1111 |
. . . . . . . . . . . . . 14
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6 | 5 | eleq2d 2687 |
. . . . . . . . . . . . 13
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7 | 4, 6 | mtbiri 317 |
. . . . . . . . . . . 12
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
8 | simprr2 1110 |
. . . . . . . . . . . . 13
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9 | elin 3796 |
. . . . . . . . . . . . . 14
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10 | 9 | simplbi2com 657 |
. . . . . . . . . . . . 13
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11 | 8, 10 | syl 17 |
. . . . . . . . . . . 12
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12 | 7, 11 | mtod 189 |
. . . . . . . . . . 11
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13 | 3, 12 | jca 554 |
. . . . . . . . . 10
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14 | 13 | rexlimdvaa 3032 |
. . . . . . . . 9
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15 | 14 | reximdva 3017 |
. . . . . . . 8
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16 | 2, 15 | mpd 15 |
. . . . . . 7
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17 | rexanali 2998 |
. . . . . . 7
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18 | 16, 17 | sylib 208 |
. . . . . 6
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19 | 18 | 3exp2 1285 |
. . . . 5
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20 | 19 | imp32 449 |
. . . 4
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21 | 20 | necon4ad 2813 |
. . 3
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22 | 21 | ralrimivva 2971 |
. 2
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23 | haustop 21135 |
. . . 4
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24 | 1 | toptopon 20722 |
. . . 4
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25 | 23, 24 | sylib 208 |
. . 3
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26 | ist1-2 21151 |
. . 3
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27 | 25, 26 | syl 17 |
. 2
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28 | 22, 27 | mpbird 247 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-iota 5851 df-fun 5890 df-fv 5896 df-topgen 16104 df-top 20699 df-topon 20716 df-cld 20823 df-t1 21118 df-haus 21119 |
This theorem is referenced by: sncld 21175 ishaus3 21626 reghaus 21628 nrmhaus 21629 tgpt1 21921 metreg 22666 ipasslem8 27692 sitmcl 30413 onint1 32448 oninhaus 32449 poimirlem30 33439 |
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