On Feb 26, 2009, at 2:32 PM, Maurizio wrote: > To the best of my knowledge, the new symbolic (are you referring to > pynac?) should just be considered as the core of symbolic, and the > utilities functions should be continue to exist on top of SAGE (or any > other package actually used, like maxima). > > Unfortunately, it seems that the inverse laplace function from maxima > is not the very best, see: > http://www.math.utexas.edu/pipermail/maxima/2007/008424.html > http://www.math.utexas.edu/pipermail/maxima/2006/000036.html > > Is there any sort of representation of piecewise functions in SAGE? > What about delta function (heaviside) or unit step? These are basics > for implementing inverse laplace in my opinion. > > Maxima already has delta() function, and signum() function (that can > be good to represent the unit step, I don't know if it's already > built- > in maxima function), can we take advantage of that? > http://www.math.utexas.edu/pipermail/maxima/2006/003249.html > > There has been a short discussion about that here: > http://groups.google.com/group/sage-devel/browse_frm/thread/ > 7f33e7001e480d47/4f46fff6a387becc?lnk=gst&q=maxima > +delta#4f46fff6a387becc
This looks like a good summary of the state of things right now. One advantage of having Pynac will be we can adjust the core/add what we need for the higher-level functionality. > I know I can seem pretty boring, but I really think that SAGE has a > great potential, and I would like to enhance its engineering power! As > it is right now, it still lacks something from that point of view. For > example (I know, I always go off-topic), has a good units of > measurement manager ever been included? Also about that you had a long > discussion, but I don't know the results: > http://groups.google.com/group/sage-devel/browse_frm/thread/ > 8791448b7a303ce9/9dc4cc27e6d4eafb?lnk=gst&q=units#9dc4cc27e6d4eafb > > Please, forgive me again for being so annoying No, it's people like you that push Sage to be better. RIght now the strengths of Sage are mostly in Number Theory and Combinatorics. There's lots of room for improvement in calculus and making things more engineering friendly, which is certainly a goal of ours. - Robert --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
