Mercurial > hg > Papers > 2020 > soto-midterm

diff src/zero.agda @ 1:73127e0ab57c

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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/zero.agda	Tue Sep 08 18:38:08 2020 +0900
@@ -0,0 +1,6 @@
++zero : { y : ℕ } → y + zero  ≡ y
++zero {zero} = refl
++zero {suc y} = cong suc ( +zero {y} )
+
+-- cong : ∀ (f : A → B) {x y} → x ≡ y → f x ≡ f y
+-- cong f refl = refl