Metamath Proof Explorer


Theorem inex2g

Description: Sufficient condition for an intersection to be a set. Commuted form of inex1g . (Contributed by Peter Mazsa, 19-Dec-2018)

Ref Expression
Assertion inex2g AVBAV

Proof

Step Hyp Ref Expression
1 incom BA=AB
2 inex1g AVABV
3 1 2 eqeltrid AVBAV