Metamath Proof Explorer


Definition df-funsALTV

Description: Define the function relations class, i.e., the class of functions. Alternate definitions are dffunsALTV , ... , dffunsALTV5 . (Contributed by Peter Mazsa, 17-Jul-2021)

Ref Expression
Assertion df-funsALTV FunsALTV=FunssRels

Detailed syntax breakdown

Step Hyp Ref Expression
0 cfunsALTV classFunsALTV
1 cfunss classFunss
2 crels classRels
3 1 2 cin classFunssRels
4 0 3 wceq wffFunsALTV=FunssRels