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Eta (/ ˈ iː t ə, ˈ eɪ t ə / EE-tə, AY-tə; [1] uppercase Η, lowercase η; Ancient Greek: ἦτα ē̂ta or Greek: ήτα ita) is the seventh letter of the Greek alphabet, representing the close front unrounded vowel, .
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. In these contexts, the capital letters and the small letters represent distinct and unrelated entities.
Heta is a conventional name for the historical Greek alphabet letter Eta ... Jeffery (1961) uses the tack symbol also as a modern label for the abstract grapheme, ...
The symbol ϵ (U+03F5) is designated specifically for the lunate form, used as a technical symbol. The symbol ϑ ("script theta") is a cursive form of theta (θ), frequent in handwriting, and used with a specialized meaning as a technical symbol. The symbol ϰ ("kappa symbol") is a cursive form of kappa (κ), used as a technical symbol.
Chrismon Chi-Rho symbol with Alpha and Omega on a 4th-century sarcophagus (Vatican Museums) A Christogram (Latin: Monogramma Christi) [a] is a monogram or combination of letters that forms an abbreviation for the name of Jesus Christ, traditionally used as a religious symbol within the Christian Church. One of the oldest Christograms is the Chi ...
Eta with circumflex and rough breathing: Archaic letter denoting the presence of /h/ prior to the vowel, with a high or falling pitch ῌῃ: Eta with subscript iota: Archaic letter denoting a long diphthong ῄ: Eta with subscript iota and acute: Archaic letter denoting a long diphthong with a rising pitch ῂ: Eta with subscript iota and grave
The ETA, the Greek army's tier-one special-operations unit, earned top marks from NATO's Special Operations Forces Headquarters in December.
Eta (Η or η) is the seventh letter of the Greek alphabet. Eta or ETA may also refer to: People ... The small letter eta is used as 't Hooft symbol; Science and ...