Mercurial > hg > Papers > 2020 > soto-midterm

comparison 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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0:b919985837a3 1:73127e0ab57c
1 +zero : { y : ℕ } → y + zero ≡ y
2 +zero {zero} = refl
3 +zero {suc y} = cong suc ( +zero {y} )
4
5 -- cong : ∀ (f : A → B) {x y} → x ≡ y → f x ≡ f y
6 -- cong f refl = refl