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| Mirrors > Home > ILE Home > Th. List > df-nel | Unicode version | ||
| Description: Define negated membership. (Contributed by NM, 7-Aug-1994.) |
| Ref | Expression |
|---|---|
| df-nel |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cA |
. . 3
| |
| 2 | cB |
. . 3
| |
| 3 | 1, 2 | wnel 2515 |
. 2
|
| 4 | 1, 2 | wcel 2209 |
. . 3
|
| 5 | 4 | wn 3 |
. 2
|
| 6 | 3, 5 | wb 105 |
1
|
| Colors of variables: wff set class |
| This definition is referenced by: neli 2517 nelir 2518 neleq1 2519 neleq2 2520 nfnel 2522 nfneld 2523 elnelne1 2524 elnelne2 2525 nelcon3d 2526 elnelall 2527 ru 3050 sbcnel12g 3164 raldifb 3369 pwnss 4294 pwnex 4593 ruALT 4696 0nelrel 4819 opabn1stprc 6422 fsetdmprc0 6943 fiprc 7097 0mnnnnn0 9577 nelfzo 10540 fvinim0ffz 10641 wrdlndm 11302 wrdsymb0 11318 rennim 11749 fsumsplitsnun 12167 modfsummodlemstep 12205 sqrt2irr0 12923 isnsgrp 13701 vtxvalprc 16213 iedgvalprc 16214 umgrnloop2 16309 1hevtxdg0fi 16465 p1evtxdeqfilem 16469 vdegp1aid 16472 eupth2lem3lem6fi 16629 bdnel 16797 |
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