Theorem nesymiOLD 2731

Description: Obsolete proof of nesymi 2730 as of 25-Nov-2019. (Contributed by BJ, 7-Jul-2018.) (Proof modification is discouraged.) (New usage is discouraged.)

Hypothesis

Ref	Expression
nesymi.1

Assertion

Ref	Expression
nesymiOLD

Proof of Theorem nesymiOLD

Step	Hyp	Ref	Expression
1		nesymi.1	. 2
2		nesym 2729	. 2
3	1, 2	mpbi 208	1

Syntax hints:  -.wn 3  =wceq 1395  =/=wne 2652

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1618  ax-4 1631  ax-ext 2435

This theorem depends on definitions:  df-bi 185  df-cleq 2449  df-ne 2654