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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.
the symbol ϖ, a graphic variant of π, is sometimes construed as omega with a bar over it; see π; the unsaturated fats nomenclature in biochemistry (e.g. ω−3 fatty acids) the first uncountable ordinal (also written as Ω) the clique number (number of vertices in a maximum clique) of a graph in graph theory
Omega with circumflex and rough breathing: Archaic letter denoting the presence of /h/ prior to the vowel, with a high or falling pitch ῼῳ: Omega with subscript iota: Archaic letter denoting a long diphthong ῴ: Omega with subscript iota and acute: Archaic letter denoting a long diphthong with a rising pitch ῲ: Omega with subscript iota ...
The symbol ϕ (U+03D5) is designated specifically for the closed form, used as a technical symbol. The letter omega has at least three stylistic variants of its capital form. The standard is the "open omega" (Ω), resembling an open partial circle with the opening downward and the ends curled outward.
In HTML and XML, a numeric character reference refers to a character by its Universal Character Set/Unicode code point, and uses the format: &#xhhhh;. or &#nnnn; where the x must be lowercase in XML documents, hhhh is the code point in hexadecimal form, and nnnn is the code point in decimal form.
The following is a Unicode collation algorithm list of Greek characters and those Greek-derived characters that are sorted alongside them. [2] [3] [4]Most of the characters of the blocks listed above are included, except for the Ancient Greek Numbers, Ancient Symbols and Ancient Greek Musical Notation.
Unicode encodes the symbol as U+2126 Ω OHM SIGN, distinct from Greek omega among letterlike symbols, but it is only included for backward compatibility and the Greek uppercase omega character U+03A9 Ω GREEK CAPITAL LETTER OMEGA (Ω, Ω) is preferred. [20] In MS-DOS and Microsoft Windows, the alt code ALT 234
Omega ɷ 𐞤 Closed omega Obsolete IPA /ʊ/ Superscript form is an IPA superscript letter [7] Ȣ ȣ: Ou Ligature of Latin o and u ᴕ ᴽ: Small capital Ou FUT [2] a back vowel of uncertain quality: ᴘ: Small capital P ꟼ Epigraphic letter reversed P ɸ ᶲ Phi IPA /ɸ/ cf. Greek: Φ φ ⱷ Tailless phi FUT [2] ĸ: Kra