Metamath Proof Explorer


Theorem rabidim2

Description: Membership in a restricted abstraction, implication. (Contributed by Glauco Siliprandi, 26-Jun-2021)

Ref Expression
Assertion rabidim2 xxA|φφ

Proof

Step Hyp Ref Expression
1 rabid xxA|φxAφ
2 1 simprbi xxA|φφ