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view paper/src/zero.agda.replaced @ 2:c7acb9211784

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add code, figure. and paper fix content
author ryokka
date Mon, 27 Jan 2020 20:41:36 +0900
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children b5fffa8ae875
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+zero : { y : @$\mathbb{N}$@ } → y + zero  @$\equiv$@ y
+zero {zero} = refl
+zero {suc y} = cong ( @$\lambda$@ x → suc x ) ( +zero {y} )