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Mirrors > Home > MPE Home > Th. List > Mathboxes > sconnpht | Structured version Visualization version Unicode version |
Description: A closed path in a simply connected space is contractible to a point. (Contributed by Mario Carneiro, 11-Feb-2015.) |
Ref | Expression |
---|---|
sconnpht | SConn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | issconn 31208 | . . 3 SConn PConn | |
2 | fveq1 6190 | . . . . . 6 | |
3 | fveq1 6190 | . . . . . 6 | |
4 | 2, 3 | eqeq12d 2637 | . . . . 5 |
5 | id 22 | . . . . . 6 | |
6 | 2 | sneqd 4189 | . . . . . . 7 |
7 | 6 | xpeq2d 5139 | . . . . . 6 |
8 | 5, 7 | breq12d 4666 | . . . . 5 |
9 | 4, 8 | imbi12d 334 | . . . 4 |
10 | 9 | rspccv 3306 | . . 3 |
11 | 1, 10 | simplbiim 659 | . 2 SConn |
12 | 11 | 3imp 1256 | 1 SConn |
Colors of variables: wff setvar class |
Syntax hints: wi 4 w3a 1037 wceq 1483 wcel 1990 wral 2912 csn 4177 class class class wbr 4653 cxp 5112 cfv 5888 (class class class)co 6650 cc0 9936 c1 9937 cicc 12178 ccn 21028 cii 22678 cphtpc 22768 PConncpconn 31201 SConncsconn 31202 |
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-3an 1039 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-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-xp 5120 df-iota 5851 df-fv 5896 df-ov 6653 df-sconn 31204 |
This theorem is referenced by: sconnpht2 31220 sconnpi1 31221 txsconn 31223 |
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