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Metamath Proof Explorer

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	$⊢ A \in V$

Step	Hyp	Ref	Expression
1		fvexi.1	$⊢ A = F (B)$
2		fvex	$⊢ F (B) \in V$
3	1 2	eqeltri	$⊢ A \in V$