# 7.3: Sum Notation and Properties of Sigma

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**At Grade**Created by: CK-12
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(sigma) is the Greek letter meaning "the sum of" when used in mathematics.

arithmetic series

arithmetic series

An arithmetic series is the sum of an arithmetic sequence, a sequence with a common difference between each two consecutive terms.geometric series

geometric series

A geometric series is a geometric sequence written as an uncalculated sum of terms.index

index

The index of a sum is the variable in the sum.limits

limits

The limits of a sum are written above and below the , and describe the domain to be used in the series calculation.sequence

sequence

A sequence is an ordered list of numbers or objects.series

series

A series is the sum of the terms of a sequence.Sigma

Sigma

, pronounced syg-mah, is the Greek letter that in math means "the sum of".sigma notation

sigma notation

Sigma notation is also known as summation notation and is a way to represent a sum of numbers. It is especially useful when the numbers have a specific pattern or would take too long to write out without abbreviation.summand

summand

A summand is an expression being summed. It directly follows the sigma symbol.summation

summation

Sigma notation is also known as summation notation and is a way to represent a sum of numbers. It is especially useful when the numbers have a specific pattern or would take too long to write out without abbreviation.### Image Attributions

## Description

Introduction to summation notation and basic operations on sigma.

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## Date Created:

Nov 01, 2012## Last Modified:

Jun 08, 2015## Vocabulary

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