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 sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. 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. For more options, visit https://groups.google.com/d/optout.
