Theorem 0cnd

Description: Zero is a complex number, deduction form. (Contributed by David A. Wheeler, 8-Dec-2018)

	Ref	Expression
Assertion	0cnd	|- ( ph -> 0 e. CC )

Proof

Step	Hyp	Ref	Expression
1		0cn	|- 0 e. CC
2	1	a1i	|- ( ph -> 0 e. CC )