Theorem neli 2461

Description: Inference associated with df-nel 2460. (Contributed by BJ, 7-Jul-2018.)

Hypothesis

Ref	Expression
neli.1	|- A e/ B

Assertion

Ref	Expression
neli	|- -. A e. B

Proof of Theorem neli

Step	Hyp	Ref	Expression
1		neli.1	. 2 |- A e/ B
2		df-nel 2460	. 2 |- ( A e/ B <-> -. A e. B )
3	1, 2	mpbi 145	1 |- -. A e. B

Syntax hints:   -. wn 3   e. wcel 2164   e/ wnel 2459

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106

This theorem depends on definitions:  df-bi 117  df-nel 2460

This theorem is referenced by:  renepnf  8067  renemnf  8068  nn0nepnf  9311  xrltnr  9845  pnfnlt  9853  nltmnf  9854  inftonninf  10513  pcgcd1  12466  pc2dvds  12468  topnex  14254