Theorem zeo3 15061

Description: An integer is even or odd. With this representation of even and odd integers, this variant of zeo 11463 follows immediately from the law of excluded middle, see exmidd 432. (Contributed by AV, 17-Jun-2021.)

Assertion

Ref	Expression
zeo3	|- ( N e. ZZ -> ( 2 || N \/ -. 2 || N ) )

Proof of Theorem zeo3

Step	Hyp	Ref	Expression
1		exmidd 432	1 |- ( N e. ZZ -> ( 2 || N \/ -. 2 || N ) )

Syntax hints:   -. wn 3   -> wi 4   \/ wo 383   e. wcel 1990   class class class wbr 4653   2c2 11070   ZZcz 11377   || cdvds 14983

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This theorem depends on definitions:  df-bi 197  df-or 385

This theorem is referenced by:  zeo5  15080