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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 4296 pwnex 4595 ruALT 4698 0nelrel 4821 opabn1stprc 6429 fsetdmprc0 6950 fiprc 7104 0mnnnnn0 9595 nelfzo 10559 fvinim0ffz 10660 wrdlndm 11321 wrdsymb0 11337 rennim 11768 fsumsplitsnun 12186 modfsummodlemstep 12224 sqrt2irr0 12942 isnsgrp 13721 vtxvalprc 16296 iedgvalprc 16297 umgrnloop2 16392 1hevtxdg0fi 16548 p1evtxdeqfilem 16552 vdegp1aid 16555 eupth2lem3lem6fi 16712 bdnel 16880 |
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