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Archaic local variants {{safesubst:#invoke:list|horizontal}}
Numerals {{safesubst:#invoke:list|horizontal}}

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  • Use as scientific symbols

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}} Sigma (upper-case Σ, lower-case σ, lower-case in word-final position ς; Greek σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. When used at the end of a word, when the word is not all upper-case, the final form (ς) is used, e.g. Ὀδυσσεύς (Odysseus); note the two sigmas in the center of the name, and the word-final sigma at the end.


Sigma sections
Intro  History  Uses  Companies  Character encodings  See also  References  

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