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  2. List of letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/List_of_letters_used_in...

    Latin and Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities.

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

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

    The Bayer designation naming scheme for stars typically uses the first Greek letter, α, for the brightest star in each constellation, and runs through the alphabet before switching to Latin letters. In mathematical finance , the Greeks are the variables denoted by Greek letters used to describe the risk of certain investments.

  4. Alphabet (formal languages) - Wikipedia

    en.wikipedia.org/wiki/Alphabet_(formal_languages)

    For example, the alphabet of lowercase letters "a" through "z" can be used to form English words like "iceberg" while the alphabet of both upper and lower case letters can also be used to form proper names like "Wikipedia". A common alphabet is {0,1}, the binary alphabet, and a "00101111" is an example of a binary string.

  5. List of writing systems - Wikipedia

    en.wikipedia.org/wiki/List_of_writing_systems

    Writing systems are used to record human language, and may be classified according to certain common features.. The usual name of the script is given first; the name of the languages in which the script is written follows (in brackets), particularly in the case where the language name differs from the script name.

  6. Alphabet - Wikipedia

    en.wikipedia.org/wiki/Alphabet

    An alphabet is a standard set of letters written to represent particular sounds in a spoken language. Specifically, letters largely correspond to phonemes as the smallest sound segments that can distinguish one word from another in a given language. [1]

  7. English alphabet - Wikipedia

    en.wikipedia.org/wiki/English_alphabet

    The ampersand (&) has sometimes appeared at the end of the English alphabet, as in Byrhtferð's list of letters in 1011. [2] & was regarded as the 27th letter of the English alphabet, as taught to children in the US and elsewhere. [vague] An example may be seen in M. B. Moore's 1863 book The Dixie Primer, for the Little Folks. [3]

  8. List of Greek letters - Wikipedia

    en.wikipedia.org/wiki/List_of_Greek_letters

    Archaic letter denoting the presence of /h/ prior to a long diphthong, with a normal or low pitch ᾟᾗ: Eta with subscript iota and circumflex and rough breathing: Archaic letter denoting the presence of /h/ prior to a long diphthong, with a high or falling pitch Ίί: Iota with acute: High pitch on short vowel or rising pitch on long vowel ...

  9. Archaic Greek alphabets - Wikipedia

    en.wikipedia.org/wiki/Archaic_Greek_alphabets

    The Euboean alphabet was used in the cities of Eretria and Chalcis and in related colonies in southern Italy, notably in Cumae, Pithecusae and Rhegion. It was through this variant that the Greek alphabet was transmitted to Italy, where it gave rise to the Old Italic alphabets, including Etruscan and ultimately the Latin alphabet. Some of the ...