Theorem exp0d

Description: Value of a complex number raised to the zeroth power. (Contributed by Mario Carneiro, 28-May-2016)

	Ref	Expression
Hypothesis	expcld.1	$$⊢\phi \to A\in ℂ$$
Assertion	exp0d	$$⊢\phi \to A^0=1$$

Proof

Step	Hyp	Ref	Expression
1		expcld.1	$$⊢\phi \to A\in ℂ$$
2		exp0	$$⊢A\in ℂ\to A^0=1$$
3	1 2	syl	$$⊢\phi \to A^0=1$$