Theorem zeo3

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

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

Proof

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