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  2. Greek alphabet - Wikipedia

    en.wikipedia.org/wiki/Greek_alphabet

    o as in German ohne, similar to British English call. ô as in French tôt. Π π: pi, πι : Unaspirated p as in English spot [24] [15] Ρ ρ: rho, ρο ~ rr as in Spanish carro; r as in Spanish caro [24] [15] [17] Σ σ/ς [note 4] sigma, σίγμα before β, γ, or μ: s as in English soft [15] s as in English muse when used before β, γ ...

  3. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    an asymptotically tight bound related to big O notation. sensitivity to the passage of time in mathematical finance; in set theory, a certain ordinal number; Heaviside step function (lowercase) represents: a plane angle in geometry; the angle to the x axis in the xy-plane in spherical or cylindrical coordinates (mathematics)

  4. List of ISO 639-2 codes - Wikipedia

    en.wikipedia.org/wiki/List_of_ISO_639-2_codes

    ISO 639 is a set of international standards that lists short codes for language names. The following is a complete list of three-letter codes defined in part two of the standard, [1] including the corresponding two-letter codes where they exist.

  5. List of Greek and Latin roots in English - Wikipedia

    en.wikipedia.org/wiki/List_of_Greek_and_Latin...

    The English language uses many Greek and Latin roots, stems, and prefixes.These roots are listed alphabetically on three pages: Greek and Latin roots from A to G; Greek and Latin roots from H to O

  6. Letter frequency - Wikipedia

    en.wikipedia.org/wiki/Letter_frequency

    The California Job Case was a compartmentalized box for printing in the 19th century, sizes corresponding to the commonality of letters. The frequency of letters in text has been studied for use in cryptanalysis, and frequency analysis in particular, dating back to the Arab mathematician al-Kindi (c. AD 801–873 ), who formally developed the method (the ciphers breakable by this technique go ...

  7. Ñ - Wikipedia

    en.wikipedia.org/wiki/Ñ

    Ñ or ñ (Spanish: eñe, ⓘ), is a letter of the modern Latin alphabet, formed by placing a tilde (also referred to as a virgulilla in Spanish, in order to differentiate it from other diacritics, which are also called tildes) on top of an upper- or lower-case n . [1]

  8. Omega - Wikipedia

    en.wikipedia.org/wiki/Omega

    Omega (US: / oʊ ˈ m eɪ ɡ ə,-ˈ m ɛ ɡ ə,-ˈ m iː ɡ ə /, UK: / ˈ oʊ m ɪ ɡ ə /; [1] uppercase Ω, lowercase ω; Ancient Greek ὦ, later ὦ μέγα, Modern Greek ωμέγα) is the twenty-fourth and last letter in the Greek alphabet.

  9. Theta - Wikipedia

    en.wikipedia.org/wiki/Theta

    A similar-looking lower-case symbol, [ɵ], which is called barred o, is the IPA symbol for the close-mid central rounded vowel. Mathematics and science Lower case ...