Re: [Haskell-cafe] ANNOUNCE: yap-0.0 - yet another prelude

2011-08-11 Thread Sebastian Fischer
[switched to Cafe] On Wed, Aug 10, 2011 at 11:46 PM, Henning Thielemann lemm...@henning-thielemann.de wrote: On Wed, 10 Aug 2011, Paterson, Ross wrote: Yet another restructuring of the Prelude numeric classes on algebraic lines, proposed for a revision of the Haskell Prelude:

Re: [Haskell-cafe] ANNOUNCE: yap-0.0 - yet another prelude

2011-08-11 Thread Henning Thielemann
On Thu, 11 Aug 2011, Sebastian Fischer wrote: [switched to Cafe] On Wed, Aug 10, 2011 at 11:46 PM, Henning Thielemann lemm...@henning-thielemann.de wrote: On Wed, 10 Aug 2011, Paterson, Ross wrote: Yet another restructuring of the Prelude numeric classes on algebraic lines, proposed for a

Re: [Haskell-cafe] ANNOUNCE: yap-0.0 - yet another prelude

2011-08-11 Thread Paterson, Ross
Sebastian Fischer [fisc...@nii.ac.jp] wrote: I'm curious: what laws do you have in mind for '+', '-', and '0' that do not hold in the multiplicative group of rational numbers with (+) = (*); (-) = (/); 0 = 1 ? x - x = zero, for one. (with x the other 0)