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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 4342 ssfilem 7181 ssfilemd 7183 diffitest 7195 ssfirab 7248 ctssexmid 7496 exmidonfinlem 7551 iooidg 10328 icc0r 10345 fznlem 10462 ioo0 10711 ico0 10713 ioc0 10714 sshashneg 11303 hashfibclem 11304 hashfibc 11305 phiprmpw 13029 hashgcdeq 13047 unennn 13346 znnen 13347 fczpsrbag 15165 ppiqub 16293 lgsquadlem2 16402 pw0ss 16529 umgrnloop0 16563 lfgrnloopen 16579 vtxd0nedgbfi 16745 clwwlkn0 16854 eupth2lembfi 16923 wexmiddiffilem 17248 wexmiddifxylem 17250 |
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