Sigma (Greek letter): Difference between revisions

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imported>Bruce M. Tindall
(New page: '''Sigma''' is the 18th letter of the Greek alphabet. It is written as <math>\Sigma</math> (upper-case) and <math>\sigma</math> (lower-case).)
(No difference)

Revision as of 16:16, 22 November 2008

Sigma is the 18th letter of the Greek alphabet. It is written as (upper-case) and (lower-case).