Theorem efcl

Description: Closure law for the exponential function. (Contributed by NM, 8-Jan-2006) (Revised by Mario Carneiro, 10-Nov-2013)

	Ref	Expression
Assertion	efcl	$$⊢A\in ℂ\to {\mathrm{e}}^A\in ℂ$$

Proof

Step	Hyp	Ref	Expression
1		eff	$$⊢\exp :ℂ⟶ℂ$$
2	1	ffvelrni	$$⊢A\in ℂ\to {\mathrm{e}}^A\in ℂ$$