Theorem fvexi

Description: The value of a class exists. Inference form of fvex . (Contributed by Glauco Siliprandi, 23-Oct-2021)

	Ref	Expression
Hypothesis	fvexi.1	⊢ 𝐴 = ( 𝐹 ‘ 𝐵 )
Assertion	fvexi	⊢ 𝐴 ∈ V

Proof

Step	Hyp	Ref	Expression
1		fvexi.1	⊢ 𝐴 = ( 𝐹 ‘ 𝐵 )
2		fvex	⊢ ( 𝐹 ‘ 𝐵 ) ∈ V
3	1 2	eqeltri	⊢ 𝐴 ∈ V