[Haskell-cafe] Re: universal algebra support in Haskell?

2008-10-24 Thread Chung-chieh Shan
Galchin, Vasili [EMAIL PROTECTED] wrote in article [EMAIL PROTECTED] in gmane.comp.lang.haskell.cafe: Do you have any examples of say instance Lattice? http://web.cecs.pdx.edu/~mpj/pubs/lattices.html http://web.cecs.pdx.edu/~mpj/pubs/springschool.html -- Edit this signature at

[Haskell-cafe] Re: universal algebra support in Haskell?

2008-10-23 Thread DavidA
Num is basically Ring, but is spoiled by the inclusion of abs and signum, which of course mainly only make sense for subrings of C. Hello, I see that there is a Monoid class from Data.Monoid. What other algebras like Group, Ring, etc. have support in Haskell?Thanks, Vasili

Re: [Haskell-cafe] Re: universal algebra support in Haskell?

2008-10-23 Thread Nathan Bloomfield
This question is relevant to a project I'm working on. I've been putting together an abstract algebra library for handling computations inside group rings, polynomial rings, and rings with adjoined elements. Once I've got it cleaned up a little I'll upload it to an appropriate place. (I forgot to

[Haskell-cafe] Re: universal algebra support in Haskell?

2008-10-23 Thread Benjamin L . Russell
On Thu, 23 Oct 2008 22:56:32 -0500, Galchin, Vasili [EMAIL PROTECTED] wrote: Hi Henning, Do you have any examples of say instance Lattice? I would be interested in an instance Lattice as well. Such an example could be related to a complete partial ordering in domain theory. -- Benjamin

[Haskell-cafe] Re: universal algebra support in Haskell?

2008-10-23 Thread Benjamin L . Russell
On Fri, 24 Oct 2008 13:50:47 +0900, Benjamin L.Russell [EMAIL PROTECTED] wrote: On Thu, 23 Oct 2008 22:56:32 -0500, Galchin, Vasili [EMAIL PROTECTED] wrote: Hi Henning, Do you have any examples of say instance Lattice? I would be interested in an instance Lattice as well. Such an example