Metamath Proof Explorer


Theorem fnrel

Description: A function with domain is a relation. (Contributed by NM, 1-Aug-1994)

Ref Expression
Assertion fnrel F Fn A Rel F

Proof

Step Hyp Ref Expression
1 fnfun F Fn A Fun F
2 funrel Fun F Rel F
3 1 2 syl F Fn A Rel F