Mercurial > hg > Papers > 2019 > ryokka-sigss

view Paper/src/function.agda.replaced @ 8:83d000399c9d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fix invisible char
author ryokka
date Tue, 18 Dec 2018 04:08:28 +0900
parents
children
line wrap: on
line source

_-_ :@$\mathbb{N}$@ →@$\mathbb{N}$@ →@$\mathbb{N}$@
x - zero  = x
zero - _  = zero
(suc x) - (suc y)  = x - y