MathGroup Archive 1994

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Sum


 Can I define a summation with limits that are defined
 by a list?  I need to use the function repeatedly for
 different list values.

 I.E.  f = Sum[Sum[(a-j p)^-1,{j,0,n[[i]]}],{i,1,L}]

 And then define L=3, n = {2,7,4}, say, to give
 the function well defined limits.  It doesn't
 seem to work.

               wknowlton at ccmail.census.gov,




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