if we have any positive integer m ,

the sum of a^m = -1 if (q-1)|m or 0 otherwise.

Note, the sum is over a belongs to Fq , where Fq is a field.

I appreciate your help,

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- March 16th 2011, 05:14 PM #1

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- March 16th 2011, 08:35 PM #2

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- March 16th 2011, 10:00 PM #3