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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 used 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 4298 pwnex 4597 ruALT 4700 0nelrel 4823 opabn1stprc 6433 fsetdmprc0 6954 fiprc 7108 0mnnnnn0 9606 nelfzo 10576 fvinim0ffz 10677 wrdlndm 11343 wrdsymb0 11359 rennim 11790 fsumsplitsnun 12211 modfsummodlemstep 12249 sqrt2irr0 12968 isnsgrp 13780 vtxvalprc 16501 iedgvalprc 16502 umgrnloop2 16597 1hevtxdg0fi 16753 p1evtxdeqfilem 16757 vdegp1aid 16760 eupth2lem3lem6fi 16917 bdnel 17085 |
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