| Mathbox for Jeff Madsen |
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Related theorems Unicode version |
| Description: Two ways of expressing
the statement "there is a cover of |
| Ref | Expression |
|---|---|
| cover2.1 |
|
| cover2.2 |
|
| Ref | Expression |
|---|---|
| cover2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | unieq 3185 |
. . . . . . 7
| |
| 2 | 1 | eqeq1d 1892 |
. . . . . 6
|
| 3 | 2 | anbi1d 679 |
. . . . 5
|
| 4 | ax-17 1317 |
. . . . . . . 8
| |
| 5 | hbrab1 2257 |
. . . . . . . 8
| |
| 6 | 4, 5 | hbeq 1995 |
. . . . . . 7
|
| 7 | eleq2 1958 |
. . . . . . . 8
| |
| 8 | rabid 2253 |
. . . . . . . . 9
| |
| 9 | 8 | simprbi 353 |
. . . . . . . 8
|
| 10 | 7, 9 | syl6bi 231 |
. . . . . . 7
|
| 11 | 6, 10 | r19.21ai 2174 |
. . . . . 6
|
| 12 | 11 | biantrud 795 |
. . . . 5
|
| 13 | 3, 12 | bitr4d 590 |
. . . 4
|
| 14 | 13 | rcla4ev 2381 |
. . 3
|
| 15 | ssrab2 2692 |
. . . 4
| |
| 16 | cover2.1 |
. . . . 5
| |
| 17 | 16 | elpw2 3464 |
. . . 4
|
| 18 | 15, 17 | mpbir 207 |
. . 3
|
| 19 | hbra1 2147 |
. . . . 5
| |
| 20 | uniss 3199 |
. . . . . . . . 9
| |
| 21 | 15, 20 | ax-mp 7 |
. . . . . . . 8
|
| 22 | 21 | sseli 2617 |
. . . . . . 7
|
| 23 | cover2.2 |
. . . . . . 7
| |
| 24 | 22, 23 | syl6eleqr 1982 |
. . . . . 6
|
| 25 | ra4 2155 |
. . . . . . 7
| |
| 26 | elunirab 3190 |
. . . . . . 7
| |
| 27 | 25, 26 | syl6ibr 230 |
. . . . . 6
|
| 28 | 24, 27 | impbid2 576 |
. . . . 5
|
| 29 | 19, 28 | 19.21ai 1345 |
. . . 4
|
| 30 | dfcleq 1878 |
. . . 4
| |
| 31 | 29, 30 | sylibr 217 |
. . 3
|
| 32 | 14, 18, 31 | sylancr 526 |
. 2
|
| 33 | r19.29r 2229 |
. . . . . . . . . . . 12
| |
| 34 | 33 | expcom 403 |
. . . . . . . . . . 11
|
| 35 | ssrexv 2673 |
. . . . . . . . . . 11
| |
| 36 | 34, 35 | sylan9r 519 |
. . . . . . . . . 10
|
| 37 | elpwi 3039 |
. . . . . . . . . 10
| |
| 38 | 36, 37 | sylan 497 |
. . . . . . . . 9
|
| 39 | 38 | imp 377 |
. . . . . . . 8
|
| 40 | eleq2 1958 |
. . . . . . . . . 10
| |
| 41 | 40 | biimpar 461 |
. . . . . . . . 9
|
| 42 | eluni2 3181 |
. . . . . . . . 9
| |
| 43 | 41, 42 | sylib 215 |
. . . . . . . 8
|
| 44 | 39, 43 | sylan2 500 |
. . . . . . 7
|
| 45 | 44 | anassrs 489 |
. . . . . 6
|
| 46 | 45 | r19.21aiva 2176 |
. . . . 5
|
| 47 | 46 | anasss 488 |
. . . 4
|
| 48 | 47 | ancom2s 545 |
. . 3
|
| 49 | 48 | r19.23aiva 2212 |
. 2
|
| 50 | 32, 49 | impbii 174 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: cover2g 15674 |
| 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-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 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-ex 1327 df-sb 1536 df-clab 1872 df-cleq 1877 df-clel 1880 df-ral 2109 df-rex 2110 df-rab 2112 df-v 2294 df-in 2603 df-ss 2605 df-pw 3035 df-uni 3178 |