On Fri, Aug 28, 2009 at 11:12 PM, Jonathan Hanke <jonha...@gmail.com> wrote:
> Hi, > > I was wondering if there is (or is planned) support for natural > multivariate power series ring constructions (with say fixed precision for > each variable) similar to that of polynomal rings? It would be nice to be > able to say something like > > S = PowerSeriesRing(QQ, 'x,y', [15, 20]) > or > S.<x,y> = PowerSeriesRing(QQ, [15, 20]) > > instead of > > S1.<x> = PowerSeriesRing(QQ, 15) > S.<y> = PowerSeriesRing(S1, 20) > > Thanks, Since mid-2005 I personally remember numerous discussions about adding multivariate power series rings to Sage. Usually what happens is people talk about it a lot, decide it is an interesting/hard/whatever problem, decide to do something really general, and then in every case nothing whatever happens. This is partly because so far when people have actual problems that are most naturally expressed using multivariate power series rings, they just do everything using multivariate polynomial rings instead of implementing multivariate power series. So, let the discussion I just predicted begin! I very much the pattern of "discussion followed by nothing" is finally broken this time. -- William --~--~---------~--~----~------------~-------~--~----~ To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
