Bee on Sunflower is to Home page Sprinkler Newz Logo on the Navigation Bar to the Home Page Court room sketch of Dzhokhar Tsarnaev in court to the Sprinkler Newz - News Page Yangtze finless porpoise from China and Korea on the navigation bar to Animals page link to animals Animals Small bookshelf to Sprinkler Newz Book Reviews Page Purple Texas Instruments Graphing Calculator to the Sprinkler Newz Math Page Electric cars charging at a Tesla Motors Supercharger station to the Sprinklernewz Business Page Planet Jupiter to the Sprinkler Newz.Us Space Page Space Human Heart to Sprinkler Newz.Us Health Page
News Book reviews Math Business
Last update: May 30, 2015
Sigma (Summation) Notation Properties & Rules
  Posted: April 29th, 2015




Sigma, the Greek symbol used in summation notation in advanced algebra.

Below are summation properties and rules which must be used to find the sum of a sequence.


Summation Property 1

Summation property 1

n is the natural number in the sequence.

c is a constant, in the case that the function is a constant number.

"i" is called the index of summation, it is not to be confused with the imaginary unit "i."


Summation Property 2



Summation Property 3

Summation property 3


Summation Property 4

Summation property 4


Summation Rule 1

summation rule 1


Summation Rule 2

summation rule 2

Summation Rule 3

summation rule 3


Horsnby, Lial, Rockwold (2011) A Graphical Approach to College Algebra. 5th ed. Addison Wesley.

  1. “A sequence is a function that computes an ordered list.” (p.528)
  2. “The symbol ..., the Greek capital letter sigma, is used to indicate a sum.” (p.531)
Back to top