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| Mirrors > Home > ILE Home > Th. List > rabeq0 | Unicode version | ||
| Description: Condition for a restricted class abstraction to be empty. (Contributed by Jeff Madsen, 7-Jun-2010.) |
| Ref | Expression |
|---|---|
| rabeq0 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | imnan 701 |
. . 3
| |
| 2 | 1 | albii 1523 |
. 2
|
| 3 | df-ral 2533 |
. 2
| |
| 4 | sbn 2012 |
. . . 4
| |
| 5 | 4 | albii 1523 |
. . 3
|
| 6 | nfv 1581 |
. . . 4
| |
| 7 | 6 | sb8 1909 |
. . 3
|
| 8 | eq0 3540 |
. . . 4
| |
| 9 | df-rab 2537 |
. . . . . . . 8
| |
| 10 | 9 | eleq2i 2305 |
. . . . . . 7
|
| 11 | df-clab 2225 |
. . . . . . 7
| |
| 12 | 10, 11 | bitri 184 |
. . . . . 6
|
| 13 | 12 | notbii 678 |
. . . . 5
|
| 14 | 13 | albii 1523 |
. . . 4
|
| 15 | 8, 14 | bitri 184 |
. . 3
|
| 16 | 5, 7, 15 | 3bitr4ri 213 |
. 2
|
| 17 | 2, 3, 16 | 3bitr4ri 213 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rab 2537 df-v 2823 df-dif 3222 df-nul 3521 |
| This theorem is used by: rabnc 3555 rabrsndc 3779 exmidsssnc 4340 ssfilem 7177 ssfilemd 7179 diffitest 7191 ssfirab 7244 ctssexmid 7490 exmidonfinlem 7545 iooidg 10311 icc0r 10328 fznlem 10445 ioo0 10694 ico0 10696 ioc0 10697 sshashneg 11281 hashfibclem 11282 hashfibc 11283 phiprmpw 13000 hashgcdeq 13018 unennn 13288 znnen 13289 fczpsrbag 15056 lgsquadlem2 16197 pw0ss 16324 umgrnloop0 16358 lfgrnloopen 16374 vtxd0nedgbfi 16540 clwwlkn0 16649 eupth2lembfi 16718 wexmiddiffilem 17043 wexmiddifxylem 17045 |
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