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Add modus-ponens
author | atton <atton@cr.ie.u-ryukyu.ac.jp> |
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date | Thu, 09 Feb 2017 06:32:03 +0000 |
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module modus-ponens where 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 f : {A B C : Set} -> (A -> B) × (B -> C) -> (A -> C) f = (\p x -> snd p ((fst p) x))