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Metamath Proof Explorer


Theorem relinxp

Description: Intersection with a Cartesian product is a relation. (Contributed by Peter Mazsa, 4-Mar-2019)

Ref Expression
Assertion relinxp Rel R A × B

Proof

Step Hyp Ref Expression
1 relxp Rel A × B
2 relin2 Rel A × B Rel R A × B
3 1 2 ax-mp Rel R A × B