view src/NatAdd.agda.replaced @ 1:73127e0ab57c

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author soto@cr.ie.u-ryukyu.ac.jp
date Tue, 08 Sep 2020 18:38:08 +0900
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open import nat
module nat_add where
 
_+_ : Nat @$\rightarrow$@ Nat @$\rightarrow$@ Nat
O + m     = m
(S n) + m = S (n + m)