william ratcliff wrote: > I just wanted to check--will the patches for noncommutative numbers be > included in this release?
No if you are asking for the patches on issue http://code.google.com/p/sympy/issues/detail?id=1358 By the way, after the release I would like to start a discussion about the way we implement noncommutative multiplication, since it clashes a bit with the new assumption system. I'll send a long email explaining my claims. > > Thanks, > William > > On Thu, Jul 16, 2009 at 12:16 AM, Ondrej Certik <ond...@certik.cz > <mailto:ond...@certik.cz>> wrote: > > > Hi, > > SymPy was accepted both for the tutorial and a 40 min talk at the > SciPy 2009 conference: > > http://conference.scipy.org/schedule > http://conference.scipy.org/abstract?id=3 > > I'll give the tutorial using sympy that is in all distributions/Sage, > e.g. 0.6.4, or even older, like 0.6.2 in EPD. However, the conference > is a good deadline to get some stuff done. > > The absolute number one priority is: > > * merge Fabian's assumptions branch and get rid of the old assumptions > > if we didn't manage nothing else, we have to manage this, it's very, > very important. > > Then the other top priorities are: > > * merge the sympyx Python core > * start using Cython in pure python mode (all around sympy) > * merge Luke's trig branch (implements all kinds of simplifications to > all 24 trig and inverse trig functions, > sin/cos/tan/cot/sec/csc/asin/acos/atan/acot/asec/acsc, along with > hyperbolic versions of each, just like Mathematica). I also hope we > could implement some more advanced trig simplifications > * port to Python 3.0 > > And of course anything else, where you feel the most efficient. For > example Aaron is doing excellent progress with the Constant class and > ODE solvers. Chris just debugged a very nasty arithmetic > simplification bug and fixed it (it's already committed). > > assumptions > ----------------- > > We'll start working on this with Fabian right after we release sympy > 0.6.5 (hopefully tomorrow). Me and Fabian will put 100% of our efforts > to make this succeed. > > sympyx > ----------- > > We did some work on that when Aaron visited me in Los Alamos and it > seems it will allow to implement Order, infinity and other things > outside the core, code is here (see also the handler branch): > > http://github.com/certik/sympyx > > python 3.0 > --------------- > > latest development on the python3.0 front is here: > > http://code.google.com/p/sympy/issues/detail?id=1262 > > There doesn't seem to be any showstoppers now, just dozens of little > things to fix. I believe anyone can finish it from this point on. :) > > Cython > ----------- > > As to Cython, I was just about to say "Cython is still not ready yet" > when I noticed that Robert just fixed the showstopper bug: > > http://codespeak.net/pipermail/cython-dev/2009-July/006360.html > > I tested and it works! See here for a demo how the pure python mode > works (see the README): > > http://github.com/certik/cython-test > > Now this is very exciting --- we can now use Cython to speed up > critical parts of sympy and mpmath, and still remain pure Python. I > plan to setup additional buildbots, that take sympy, runs cython on it > and execute all tests. E.g. the same sympy tests will test both pure > Python sympy, and cythonized sympy. > > Stuff like factorization of integers and similar things can be sped up > very easily a lot. The ultimate goal of course is to cythonize the > core classes, because they become C structs and its virtually as fast > as ginac, if done with care. The sympyx has it, but it will take some > time to fully integrate it (it's easy to create a fast simple core, > but way more challenging to add all the special cases, like > assumptions, infinities, Order, ...). But we can (and will) start > using cython here and there now, setup all the infrustructure and > slowly start improving and experimenting with it. And then gradually > improve. > > Ondrej > > > > > > -- http://fseoane.net/blog/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---
