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fix agda.tex
author ryokka
date Thu, 06 Feb 2020 19:24:32 +0900
parents
children 831316a767e8
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_-_ : Nat @$\rightarrow$@ Nat @$\rightarrow$@ Nat
n     - zero = n      -- "n - zero" have 2-pattern, "zero - zero" "suc n - zero"
zero  - suc m = zero
suc n - suc m = n - m