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view src/AgdaProduct.agda @ 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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data _×_ (A B : Set) : Set where
  <_,_> : A -> B -> A × B

fst : {A B : Set} -> A × B -> A
fst < a , _ > = a

snd : {A B : Set} -> A × B -> B
snd < _ , b > = b