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empty sums?

Axel Vogt 5906
October 21 2009
1 
Does Maple 13 still have strange behaviours with empty sums like M12?

  interface(version);
  Classic Worksheet Interface, Maple 12.02, Windows, Dec 10 2008 Build ID 377066

  #Sum(t^j*(z-a)^(-2*n+j)/j!,j = 0 .. -1+n); eval(%, n=1);
  #S:=Sum(t^j*(z-a)^(-2+j)/j!,j = 0 .. 0);
  S:=Sum(1,j = 0 .. 0);
  value(S);
  #subs(Sum = add, S); value(%);
  #eval(S, Sum = add);
  #eval(S, Sum = sum);


                                    0
                                  -----
                                   \
                             S :=   )   1
                                   /
                                  -----
                                  j = 0


                                  1
interface

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