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  2. Sigma - Wikipedia

    en.wikipedia.org/wiki/Sigma

    u+03f9 Ϲ greek capital lunate sigma symbol; u+03fd Ͻ greek capital reversed lunate sigma symbol; u+03fe Ͼ greek capital dotted lunate sigma symbol; u+03ff Ͽ greek capital reversed dotted lunate sigma symbol; u+2140 ⅀ double-struck n-ary summation; u+2211 ∑ n-ary summation (∑, ∑) u+23b2 ⎲ summation top [a] u+23b3 ⎳ summation ...

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

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

    one of the Gegenbauer functions in analytic number theory (may be replaced by the capital form of the Latin letter P). represents: one of the Gegenbauer functions in analytic number theory. the Dickman–de Bruijn function; the radius in a polar, cylindrical, or spherical coordinate system; the correlation coefficient in statistics

  4. Greek alphabet - Wikipedia

    en.wikipedia.org/wiki/Greek_alphabet

    The form ϲ ("lunate sigma", resembling a Latin c) is a medieval stylistic variant that can be used in both environments without the final/non-final distinction. The capital letter upsilon (Υ) can occur in different stylistic variants, with the upper strokes either straight like a Latin Y, or slightly curled.

  5. List of Greek letters - Wikipedia

    en.wikipedia.org/wiki/List_of_Greek_letters

    Sigma with caron: Nonstandard letter for Cypriot Greek [9] and Pontic Greek [10] representing /ʃ/ Σ̈σ̈: Sigma with diaeresis: Arvanitika letter for /ʃ/ [7] Τ̌τ̌: Tau with caron: Nonstandard letter for Cypriot Greek representing /c/ [9] Ύύ: Upsilon with acute: High pitch on short vowel or rising pitch on long vowel Ὺὺ: Upsilon ...

  6. Glossary of mathematical symbols - Wikipedia

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

    For most symbols, the entry name is the corresponding Unicode symbol. So, for searching the entry of a symbol, it suffices to type or copy the Unicode symbol into the search textbox. Similarly, when possible, the entry name of a symbol is also an anchor, which allows linking easily from another Wikipedia article. When an entry name contains ...

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  8. Letterlike Symbols - Wikipedia

    en.wikipedia.org/wiki/Letterlike_Symbols

    Script capital I 2110 ℑ: Black-letter capital I 2111 ℒ: Script capital L 2112 ℓ: Script small L (LaTeX: \ell) 2113 ℔ L B bar symbol 2114 ℕ: Double-struck capital N 2115 № Numero sign: 2116 ℗ Sound recording copyright symbol: 2117 ℘ Script capital P alias: Weierstrass elliptic function 2118 ℙ: Double-struck capital P 2119 ℚ ...

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