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view paper/src/zero.agda.replaced @ 4:b5fffa8ae875

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fix chapter hoare
author ryokka
date Wed, 29 Jan 2020 22:36:17 +0900
parents c7acb9211784
children e8655e0264b8
line wrap: on
line source

+zero : { y : @$\mathbb{N}$@ } @$\rightarrow$@ y + zero  @$\equiv$@ y
+zero {zero} = refl
+zero {suc y} = cong ( @$\lambda$@ x @$\rightarrow$@ suc x ) ( +zero {y} )