Our students say ## Mathematica Tutorial 39

Sigma is a Mathematica package that can handle multisums in terms of indefinite nested sums and products. The summation principles of Sigma are: telescoping, creative telescoping and

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## Forum of Mathematics, Sigma

Sigma is the eighteenth letter of the ancient Greek alphabet. As an upper case letter ( ), it is used as a symbol for sums and series . As a lower case letter () it is a prefix used ## DivisorSigma

Sigma-Algebra Let be a set. Then a -algebra is a nonempty collection of subsets of such that the following hold: 1. is in . 2. If is in , then so is the complement of . 3. If is a

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## The summation package Sigma

Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents. Determine math problems

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