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hi

i want to sum over two indices i and j . the elemet that i must sum is (x^(i,j))-i

that is x has superscript i,j and subscript i.

but in mathematica it gives me error.

here is the notebook :

http://www.mediafire.com/?novtz7t0liu9u78 [Broken]

thanks (:

i want to sum over two indices i and j . the elemet that i must sum is (x^(i,j))-i

that is x has superscript i,j and subscript i.

but in mathematica it gives me error.

here is the notebook :

http://www.mediafire.com/?novtz7t0liu9u78 [Broken]

thanks (:

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