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Summation in Mathematica
Posted:
Apr 24, 2013 7:02 AM


Hello All,
I am trying to understand a piece of code I found but I am stuck on this summation. This is part of a larger do loop over n.
UnderoverscriptBox[\(\[Sum]\), \(m = \(10\)\), \(10\)]\(\(eigenfunctionsort[n, j]\)[\([m + 11]\)] Exp[I*2*\[Pi]*m*x/dp]\)\),{j,1,21}]
What I mainly do not understand is what is happening with the [m+11]. Is that being multiplied with eigen function sort with each step in the sum, or is that simply adding 11 to m at each step in the sum?
Thanks Ben



