Status: Accepted Owner: ---- CC: [email protected] Labels: Type-Defect Priority-Medium
New issue 3054 by [email protected]: Simplification of ratios of gamma functions
http://code.google.com/p/sympy/issues/detail?id=3054 Sympy can not simplify some rations of two gamma functions. An example is: In [3]: gamma(1/S(4))/gamma(5/S(4)) Out[3]: gamma(1/4)/gamma(5/4) In [4]: simplify(_) Out[4]: gamma(1/4)/gamma(5/4) In [5]: combsimp(_) Out[5]: gamma(1/4)/gamma(5/4) In [7]: expand_func(_) Out[7]: gamma(1/4)/gamma(5/4) The correct result would be 4 Another one: In [8]: gamma(S(3)/4)gamma(S(7)/4) Out[8]: gamma(3/4)/gamma(7/4) In [9]: combsimp(_) Out[9]: gamma(3/4)/gamma(7/4) The correct result would be 4/3 The formulas here could be useful: http://en.wikipedia.org/wiki/Particular_values_of_the_gamma_function#General_rational_arguments -- You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en.
