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view paper/src/monad_laws_in_haskell.hs @ 78:6f699b37dc55

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Add original number count
author Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
date Wed, 18 Feb 2015 12:26:17 +0900
parents 1181b4facaf9
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mu . fmap mu  = mu . mu
mu . fmap eta = mu . eta = id

eta . f            = fmap f . eta
mu . fmap (fmap f) = fmap f . mu