Theorem imaexi

Description: The image of a set is a set. (Contributed by Glauco Siliprandi, 26-Jun-2021)

	Ref	Expression
Hypothesis	imaexi.1	|- A e. V
Assertion	imaexi	|- ( A " B ) e. _V

Proof

Step	Hyp	Ref	Expression
1		imaexi.1	|- A e. V
2		imaexg	|- ( A e. V -> ( A " B ) e. _V )
3	1 2	ax-mp	|- ( A " B ) e. _V