Difference between revisions of "Summation"
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Revision as of 13:39, 23 November 2007
A summation is a form of shorthand used foten.
Definitions
For , and a set (or any other algebraic structure), . Note that if , then the sum is .
Rules
- , and in general
Special Summations
Certain types of summations are different from the common variety, such as cyclic sums, and symmetric sums.