view agda/basic.agda @ 31:33b386de3f56

Proof list-associative
author Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
date Sat, 18 Oct 2014 13:38:29 +0900
parents e0ba1bf564dd
children c5cdbedc68ad
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open import Level

module basic where

id : {l : Level} {A : Set} -> A -> A
id x = x

_∙_ : {l ll lll : Level} {A : Set l} {B : Set ll} {C : Set lll} -> (B -> C) -> (A -> B) -> (A -> C)
f ∙ g = \x -> f (g x)

postulate String : Set
postulate show   : {A : Set} -> A -> String