> rigid and I belong to the small legion of amateurs who implemented their > own math. domain system, Rings, Fields, Modules, etc. This apparently > has no chance to be included into the Haskell standard, nobody cares. Standards develop because people who care about particular aspects of them push them forward. It is not true that nobody cares. It may well be true that nobody has time to make a well-documeted and well-implemented library. You could change that. [I mean you plural; readers of this list.] To be specific, why don't you package it all up as a documented Haskell library? We'd be happy to distribute it along with GHC, and I bet the Hugs team would too. After a while, if people liked it, it would become so popular it would become part of the standard. I'm serious. We are busily developing libraries shared between GHC and Hugs that aren't part of the official standard, but are at least common between our two impls, and available to all other impls too. ftp://haskell.org/pub/reid/libs980219/libs.html Send us your code! Simon