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Related theorems Unicode version |
| Description: The subspace topology of the base set is the original topology. (Contributed by Jeff Hankins, 9-Jul-2009.) |
| Ref | Expression |
|---|---|
| subspid.1 |
|
| Ref | Expression |
|---|---|
| subspid |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uniexg 3795 |
. . . . 5
| |
| 2 | subspid.1 |
. . . . 5
| |
| 3 | 1, 2 | syl5eqel 1975 |
. . . 4
|
| 4 | visset 2295 |
. . . . 5
| |
| 5 | issubspt 10247 |
. . . . 5
| |
| 6 | 4, 5 | mp3an2 1179 |
. . . 4
|
| 7 | 3, 6 | mpdan 768 |
. . 3
|
| 8 | eleq1 1957 |
. . . . . 6
| |
| 9 | 2 | topopn 8871 |
. . . . . . . 8
|
| 10 | 9 | adantr 425 |
. . . . . . 7
|
| 11 | inopn 8869 |
. . . . . . 7
| |
| 12 | 10, 11 | mpd3an3 1192 |
. . . . . 6
|
| 13 | 8, 12 | syl5cbir 228 |
. . . . 5
|
| 14 | 13 | r19.23adva 2216 |
. . . 4
|
| 15 | simpr 350 |
. . . . . 6
| |
| 16 | 2 | eltopss 8872 |
. . . . . . . 8
|
| 17 | df-ss 2605 |
. . . . . . . 8
| |
| 18 | 16, 17 | sylib 215 |
. . . . . . 7
|
| 19 | 18 | eqcomd 1889 |
. . . . . 6
|
| 20 | ineq1 2789 |
. . . . . . . 8
| |
| 21 | 20 | eqeq2d 1895 |
. . . . . . 7
|
| 22 | 21 | rcla4ev 2381 |
. . . . . 6
|
| 23 | 15, 19, 22 | syl11anc 524 |
. . . . 5
|
| 24 | 23 | ex 402 |
. . . 4
|
| 25 | 14, 24 | impbid 574 |
. . 3
|
| 26 | 7, 25 | bitrd 587 |
. 2
|
| 27 | 26 | eqrdv 1882 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: retopcon 15452 phtpycolem3 16053 phtpycolem4 16054 reparphtlem2 16064 pcohtpylem3 16082 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-13 1311 ax-14 1312 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 ax-un 3790 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-3an 860 df-ex 1327 df-sb 1536 df-eu 1775 df-mo 1776 df-clab 1872 df-cleq 1877 df-clel 1880 df-ne 2019 df-ral 2109 df-rex 2110 df-v 2294 df-sbc 2454 df-csb 2541 df-dif 2597 df-un 2600 df-in 2603 df-ss 2605 df-nul 2876 df-if 2983 df-pw 3035 df-sn 3049 df-pr 3050 df-op 3053 df-uni 3178 df-br 3339 df-opab 3396 df-id 3586 df-xp 4000 df-rel 4001 df-cnv 4002 df-co 4003 df-dm 4004 df-rn 4005 df-res 4006 df-ima 4007 df-fun 4008 df-fv 4014 df-opr 4886 df-oprab 4887 df-top 8861 df-subsp 10243 |