Comment #3 on issue 2723 by [email protected]: What should summation() do
with non-integer limits?
http://code.google.com/p/sympy/issues/detail?id=2723
Thanks for the feedback. As a workaround I will use integer limits.
The summation with non-integer limits is used regularly in every physics
textbook that deals with spin variables, e.g. sum over -S to S with S
either 1/2, 1, 3/2, etc.
As Mathematica or Maple have no problems with this why should it be
forbidden or not working nicely in Sympy?
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