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Sigma
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. (unicode:Ὀδυσσεύς) (Odysseus); note the two sigmas in the center of the name, and the word-final sigma at the end. ==History== The shape and alphabetic position of Sigma is derived from Phoenician shin (unicode:𐤔) .
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Sigma」の詳細全文を読む
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