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	$$⊢A=F\left(B\right)$$
Assertion	fvexi	$$⊢A\in \mathrm{V}$$

Proof

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