diff src/function.agda.replaced @ 1:73127e0ab57c

(none)
author soto@cr.ie.u-ryukyu.ac.jp
date Tue, 08 Sep 2020 18:38:08 +0900
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/function.agda.replaced	Tue Sep 08 18:38:08 2020 +0900
@@ -0,0 +1,4 @@
+_-_ :@$\mathbb{N}$@ @$\rightarrow$@@$\mathbb{N}$@ @$\rightarrow$@@$\mathbb{N}$@
+x - zero  = x
+zero - _  = zero
+(suc x) - (suc y)  = x - y