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 V


Step Hyp Ref Expression
1 fvexi.1 A = F B
2 fvex F B V
3 1 2 eqeltri A V