You can try using combsimp(). I think it has also received some improvements in master.
You can also try using SymPy to evaluate the sum. Aaron Meurer On Thu, Nov 23, 2017 at 2:43 AM, Nico Schlömer <[email protected]> wrote: > Given natural numbers n, r, 0<=r<=n, I'm dealing with the expression > > > <https://lh3.googleusercontent.com/-hhIypvImNS4/WhaYAHKyE4I/AAAAAAABNUk/wBJbs4K02j0ftJtmWvD8uEKggygSn7VHACLcBGAs/s1600/sums.png> > > > I have the strong suspicion that this can be simplified to a product of > binomial coefficients. Is there any way that sympy can help me here? > > -- > 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 [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/sympy. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/sympy/4bc2df75-3944-4e69-abe2-eada30c3fc64%40googlegroups.com > <https://groups.google.com/d/msgid/sympy/4bc2df75-3944-4e69-abe2-eada30c3fc64%40googlegroups.com?utm_medium=email&utm_source=footer> > . > 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAKgW%3D6LnJ5YsVt1LhHbdgZ5nTqsrO2KX17j36OrR2-F8PjcSXg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
