Encyclopedia : X : XI : XI (2 articles)

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Xi
Xi (upper case Ξ, lower case ξ) is the 14th letter of the Greek alphabet. It is pronounced zye by English speakers, but ksee by modern Greeks. In the system of Greek numerals it has a value of 60. A joined variant of Ξ. The lower-case letter ξ is used as a symbol for: Random VariablesExt..

 

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