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Mirrors > Home > MPE Home > Th. List > ishaus | Structured version Visualization version Unicode version |
Description: Express the predicate " is a Hausdorff space." (Contributed by NM, 8-Mar-2007.) |
Ref | Expression |
---|---|
ist0.1 |
Ref | Expression |
---|---|
ishaus |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | unieq 4444 | . . . 4 | |
2 | ist0.1 | . . . 4 | |
3 | 1, 2 | syl6eqr 2674 | . . 3 |
4 | rexeq 3139 | . . . . . 6 | |
5 | 4 | rexeqbi1dv 3147 | . . . . 5 |
6 | 5 | imbi2d 330 | . . . 4 |
7 | 3, 6 | raleqbidv 3152 | . . 3 |
8 | 3, 7 | raleqbidv 3152 | . 2 |
9 | df-haus 21119 | . 2 | |
10 | 8, 9 | elrab2 3366 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 w3a 1037 wceq 1483 wcel 1990 wne 2794 wral 2912 wrex 2913 cin 3573 c0 3915 cuni 4436 ctop 20698 cha 21112 |
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-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-uni 4437 df-haus 21119 |
This theorem is referenced by: hausnei 21132 haustop 21135 ishaus2 21155 cnhaus 21158 dishaus 21186 pthaus 21441 hausdiag 21448 txhaus 21450 xkohaus 21456 |
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