[Haskell-cafe] adding the elements of two lists
jerzy.karczmarczuk at unicaen.fr
Mon Mar 26 10:17:46 CEST 2012
Le 26/03/2012 02:41, Chris Smith a écrit :
> Of course there are rings for which it's possible to represent the
> elements as lists. Nevertheless, there is definitely not one that
> defines (+) = zipWith (+), as did the one I was responding to.
The additive structure does not define a ring.
The multiplication can be a Legion, all different.
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