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view paper/src/agda-pattern.agda.replaced @ 11:831316a767e8

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add hoare figure
author ryokka
date Mon, 10 Feb 2020 14:20:21 +0900
parents 8ef64db63497
children
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_-_ : Nat @$\rightarrow$@ Nat @$\rightarrow$@ Nat
n     - zero = n
zero  - suc m = zero
suc n - suc m = n - m