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    Sigma - Wikipedia

    Sigma is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. In general mathematics, uppercase Σ is used as an operator for summation. When used at the end of a letter-case word (one that does not use all caps), the final form (ς) is used. In Ὀδυσσεύς (Odysseus), for example, … 展开

    The shape (Σς) and alphabetic position of sigma is derived from the Phoenician letter (shin).
    Sigma's original name may have been san, but due to the … 展开

    • U+037B ͻ GREEK SMALL REVERSED LUNATE SIGMA SYMBOL
    • U+037C ͼ GREEK SMALL DOTTED LUNATE SIGMA SYMBOL
    • U+037D ͽ … 展开

    Language and linguistics
    • In both Ancient and Modern Greek, the sigma represents the voiceless alveolar fricative [s]. In Modern Greek, this sound is voiced to the 展开

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    2024年2月15日 · This article discusses the list of letters in the Greek alphabet with names charts, and, examples. It also explores the usage of the Greek Alphabet in mathematics and scientific notation, the uppercase and lowercase …

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  9. Sigma Secrets: Summing Up Greek Sophistication ∑

    Learn about Sigma, the 18th letter of the Greek alphabet, and its historical, cultural, and modern applications. Find out its numerical value, pronunciation, symbolism, and usage in science, technology, and popular culture.

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