Metamath Proof Explorer


Theorem ioofun

Description: (,) is a function. (Contributed by Glauco Siliprandi, 26-Jun-2021)

Ref Expression
Assertion ioofun Fun .

Proof

Step Hyp Ref Expression
1 ioof . : * × * 𝒫
2 ffun . : * × * 𝒫 Fun .
3 1 2 ax-mp Fun .