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  2. Sigma - Wikipedia

    en.wikipedia.org/wiki/Sigma

    u+037b ͻ greek small reversed lunate sigma symbol; u+037c ͼ greek small dotted lunate sigma symbol; u+037d ͽ greek small reversed dotted lunate sigma symbol; u+03a3 Σ greek capital letter sigma (σ) u+03c2 ς greek small letter final sigma (ς, ς, ς) u+03c3 σ greek small letter sigma (σ) u+03f2 ϲ greek ...

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

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

    The OpenType font format has the feature tag "mgrk" ("Mathematical Greek") to identify a glyph as representing a Greek letter to be used in mathematical (as opposed to Greek language) contexts. The table below shows a comparison of Greek letters rendered in TeX and HTML. The font used in the TeX rendering is an italic style.

  4. List of Greek letters - Wikipedia

    en.wikipedia.org/wiki/List_of_Greek_letters

    This is a list of letters of the Greek alphabet. The definition of a Greek letter for this list is a character encoded in the Unicode standard that a has script property of "Greek" and the general category of "Letter". An overview of the distribution of Greek letters is given in Greek script in Unicode.

  5. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...

  6. What do teens mean when they say ‘sigma’? - AOL

    www.aol.com/news/teens-mean-sigma-000158935.html

    Some know “sigma” as the 18th letter of the Greek alphabet but it’s also teen slang for a cool ... The teen version of “mewing” is a “hush” symbol and touching the jawline to mean ...

  7. Greek alphabet - Wikipedia

    en.wikipedia.org/wiki/Greek_alphabet

    Greek symbols are used as symbols in mathematics, physics and other sciences. Many symbols have traditional uses, such as lower case epsilon (ε) for an arbitrarily small positive number , lower case pi (π) for the ratio of the circumference of a circle to its diameter , capital sigma (Σ) for summation , and lower case sigma (σ) for standard ...

  8. Stigma (ligature) - Wikipedia

    en.wikipedia.org/wiki/Stigma_(ligature)

    The numeral symbol, originally quite unrelated to the στ ligature, developed from the letter Ϝ, which stood for the sound /w/ in early pre-classical forms of the Greek alphabet. This symbol became obsolete as a letter during the classical era but remained part of the Greek alphabet-based system of numerals, where its value of 6 corresponded ...

  9. These are the pedophile symbols you need to know to protect ...

    www.aol.com/news/2016-04-26-these-are-the...

    A FBI document obtained by Wikileaks details the symbols and logos used by pedophiles to identify sexual preferences. According to the document members of pedophilic organizations use of ...