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view final_main/src/ThreePlusOne.agda @ 5:eafc166804f3

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fix Capter4.2,5,1
author ryokka
date Mon, 19 Feb 2018 18:44:59 +0900
parents 93d26c4576d3
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open import Relation.Binary.PropositionalEquality
open import nat
open import nat_add

module three_plus_one where

3+1 : (S (S (S O)))  +  (S O) ≡ (S (S (S (S O))))
3+1 = refl