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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cA |
. . 3
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2 | cB |
. . 3
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3 | 1, 2 | wnel 2202 |
. 2
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4 | 1, 2 | wcel 1390 |
. . 3
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5 | 4 | wn 3 |
. 2
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6 | 3, 5 | wb 98 |
1
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Colors of variables: wff set class |
This definition is referenced by: neli 2293 nelir 2294 neleq1 2295 neleq2 2296 nfnel 2298 nfneld 2299 ru 2757 sbcnel12g 2861 raldifb 3077 pwnss 3903 ruALT 4229 fiprc 6228 0mnnnnn0 7990 rennim 9211 bdnel 9309 |
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