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August 17th, 2007, 07:59 PM   #1
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Sigma Notations

Please help:
1. What does ∑ m mean? (m part is supposed to be on the bottom part of the sigma notation).
2. What does ∑ i,j mean? (i,j part is supposed to be on the bottom part of the sigma notation).
3. What does ∑ i,j,k mean? (i,j,k part is supposed to be on the bottom part of the sigma notation).
4. If I am missing any other important sigma stuff, please let me know.
Thanks,

J.
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August 18th, 2007, 02:37 AM   #2
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