Nu

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'''Nu''' (uppercase '''Ν''', lowercase '''ν'''; also transcribed as '''Ny'''; modern Νι ni| Ni), is the 13th letter of the [[Greek alphabet]]. In the system of [[Greek numerals]] it has a value of 50. Its [[Latin Alphabet]] equivalent is N, though the lowercase resembles the Roman lowercase [[v]].
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The name of the letter is written νῦ in [[Ancient Greek]] and traditional [[Modern Greek]] [[polytonic orthography]], while in [[Modern Greek]] it is sometimes written νι [ni]. In English, the name of the letter is ˈnuː or /ˈnjuː/.
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The lower-case letter ν is used as a symbol for:
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* [[Degrees of freedom (statistics)|Degree of freedom]] in [[statistics]]
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* The [[spatial frequency]] of a wave in physics and other fields.
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* [[Viscosity#Kinematic_viscosity:_.CE.BD_.3D_.CE.BC_.2F_.CF.81|Kinematic viscosity]] in [[fluid mechanics]]
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* [[Poisson's ratio]], the ratio of strains perpendicular with and parallel with an applied force.
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* Any of three kinds of [[neutrino]] in particle physics.
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* One of [[Greeks (finance)|the Greeks]] in [[mathematical finance]], known as "vega".
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* The number of [[neutrons]] released per [[nuclear fission|fission]] of an atom in nuclear physics.
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* A [[DNA polymerase]] found in higher [[eukaryotes]] and implicated in Translesion Synthesis.
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* Molecular vibrational mode, ν<sub>x</sub> where x is the number of the vibration (a label)
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* The [[stoichiometric coefficient]]
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* The [[Greatest fixed point]] of a function, as commonly used in the [[Mu calculus|μ-calculus]]
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* The maximum conditioning possible for an [[unconditioned stimulus]] in the [[Rescorla-Wagner model]]
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== See also ==
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* [[Movable nu]]
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{{DEFAULTSORT:Nu (Letter)}}
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[[Category:Greek letters]]

Revision as of 12:46, 17 March 2011

Nu (uppercase Ν, lowercase ν; also transcribed as Ny; modern Νι ni| Ni), is the 13th letter of the Greek alphabet. In the system of Greek numerals it has a value of 50. Its Latin Alphabet equivalent is N, though the lowercase resembles the Roman lowercase v.

The name of the letter is written νῦ in Ancient Greek and traditional Modern Greek polytonic orthography, while in Modern Greek it is sometimes written νι [ni]. In English, the name of the letter is ˈnuː or /ˈnjuː/.

The lower-case letter ν is used as a symbol for:

See also

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