On Nov 23, 2008, at 1:41 AM, William Stein wrote:
> Ginac (on which Pynac is based) doesn't have any nontrivial symbolic > integration. So that's going to continue to depend on Maxima until > we: > > * write our own > * switch to using sympy for integration (sympy does some > integration) > * use code from giac, which does some integration > * Axiom? > > I would definitely like to improve the ability of the integrate > command to use say Maple or Mathematica to optionally compute > integrals. Then people like you (in this thread) who do have Maple or > Mathematica laying around could still use it for that without having > to explicitly mess with the Sage Maple/Mathematica interfaces. > The main things that stop me are commands to manipulate expressions, especially integrals. Most of my work involves a lot of calculus and differential equations. I often apply commands directly to integrands and I like Maple's ability to break apart expressions and integrals to operate on individual terms. Based upon earlier discussions I think Burcin has plans in that direction. As for the option to use Maple/Mathematica, I think as long as there is relatively good conversion of expressions, it's best to just let the user call the Maple/Mathematica command directly. Otherwise, you need to write code to detect if one is installed and call it with a fallback plan if they're not. It's my understanding that Axiom is best in breed for integration, so it may be best to use that. Cheers, Tim. --- Tim Lahey PhD Candidate, Systems Design Engineering University of Waterloo --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
