I thought the difficulty was with getting Order to represent multidimensional orders and do anything nontrivial with them.
Aaron Meurer On Mon, Jun 23, 2014 at 3:05 PM, Vinzent Steinberg <vinzent.steinb...@gmail.com> wrote: > On Monday, June 16, 2014 4:47:07 PM UTC-4, Klaus Santor wrote: >> >> The current method for two variable expansion is to make two one >> dimensional expansions after removing (via removeO()) the order term for the >> first expansion. This isn't entirely satisfactory since there is then no >> proper error term for the two variable expansion. However, the technique >> does work for getting a series expansion of an explicit function of two >> variables (without error term). My issue is that it fails completely for an >> expansion of a general f(x,y). One dimensional expansions work fine for f(x) >> so that's not the concern. Here is an example that fails: >> f(x,y).series(x,0,3).removeO().series(y,0,3).removeO(). >> Is there any way around this failure? > > > It fails because series() does not know how to deal with the evaluated > partial derivatives. I don't see a way around teaching series() how to do > it. > > Vinzent > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sympy+unsubscr...@googlegroups.com. > To post to this group, send email to sympy@googlegroups.com. > Visit this group at http://groups.google.com/group/sympy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/1547d121-3e30-4972-a677-4dc0796efeba%40googlegroups.com. > > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAKgW%3D6LhxY05gO7Unsqh---M%3Deu9dUN%3DSAopuN%2BakJ736RZQLw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
