Xi - Revision history

Beza 1598: /* References */

2016-03-12T02:40:12Z

References

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	{{Greek Lexicon}}		{{Greek Lexicon}}
	[[Category:Greek letters]]		[[Category:Greek letters]]

			{{Donate}}

Nick at 12:50, 12 February 2015

2015-02-12T12:50:32Z

← Older revision		Revision as of 12:50, 12 February 2015
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	[[image:Xi.~~png~~\|thumb\|150px\|Xi]]		[[image:Xi.jpg\|thumb\|150px\|Xi]]
	'''Xi''' (uppercase '''Ξ''', lowercase '''ξ''') is the 14th letter of the [[Greek alphabet]]. It is pronounced ˈksi in [[Modern Greek]], and generally ˈzaɪ or ˈsaɪ in [[English language\|English]].<sup>[1]</sup> In the system of [[Greek numerals]], it has a value of 60.		'''Xi''' (uppercase '''Ξ''', lowercase '''ξ''') is the 14th letter of the [[Greek alphabet]]. It is pronounced ˈksi in [[Modern Greek]], and generally ˈzaɪ or ˈsaɪ in [[English language\|English]].<sup>[1]</sup> In the system of [[Greek numerals]], it has a value of 60.

Nick: /* References */

2015-01-20T11:41:02Z

References

← Older revision		Revision as of 11:41, 20 January 2015
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	{{DEFAULTSORT:Xi (Letter)}}		{{DEFAULTSORT:Xi (Letter)}}

			{{Greek Lexicon}}
	[[Category:Greek letters]]		[[Category:Greek letters]]

Nick at 12:31, 18 March 2011

2011-03-18T12:31:38Z

← Older revision		Revision as of 12:31, 18 March 2011
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			[[image:Xi.png\|thumb\|150px\|Xi]]
	'''Xi''' (uppercase '''Ξ''', lowercase '''ξ''') is the 14th letter of the [[Greek alphabet]]. It is pronounced ˈksi in [[Modern Greek]], and generally ˈzaɪ or ˈsaɪ in [[English language\|English]].<sup>[1]</sup> In the system of [[Greek numerals]], it has a value of 60.		'''Xi''' (uppercase '''Ξ''', lowercase '''ξ''') is the 14th letter of the [[Greek alphabet]]. It is pronounced ˈksi in [[Modern Greek]], and generally ˈzaɪ or ˈsaɪ in [[English language\|English]].<sup>[1]</sup> In the system of [[Greek numerals]], it has a value of 60.

Nick at 12:29, 18 March 2011

2011-03-18T12:29:57Z

← Older revision		Revision as of 12:29, 18 March 2011
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	Ξξ Xi		'''Xi''' (uppercase '''Ξ''', lowercase '''ξ''') is the 14th letter of the [[Greek alphabet]]. It is pronounced ˈksi in [[Modern Greek]], and generally ˈzaɪ or ˈsaɪ in [[English language\|English]].<sup>[1]</sup> In the system of [[Greek numerals]], it has a value of 60.

			Xi is not to be confused with the letter [[chi (letter)\|chi]], which gave its form to the Latin letter [[X]].

			==Greek==
			[[Image:Xi alternate.png\|thumb\|left\|A joined variant of Ξ.]]
			Both in [[Modern Greek]] and in the modern system for writing [[Ancient Greek]], xi represents /ks/. This usage comes from the [[History of the Greek alphabet#Epichoric alphabets\|regional variants]] of the Greek alphabet used to write the [[Attic Greek\|Attic]] and [[Ionic Greek\|Ionic]] [[Ancient Greek dialects\|dialects]].

			In the Western or [[Euboean alphabet]], the sounds represented by xi and [[chi (letter)\|chi]] were the opposite of the modern usage: xi represented /kʰ/, and chi (Χ) represented /ks/. Because this variant of the Greek alphabet was used in [[Italy]], the [[Latin alphabet]] borrowed chi rather than xi as the Latin letter [[X]].

			==Cyrillic==
			While having no Latin derivative, the Xi was adopted into the [[early Cyrillic alphabet]], as the letter [[Ksi (Cyrillic letter)\|ksi]] (Ѯ, ѯ).

			==Math and science==
			===Upper case===
			The upper-case letter Ξ is used as symbol for:
			* The "[[Xi (particle)\|cascade particles]]" in particle physics
			* Indicating "no change of state" in [[Z notation]]
			* The [[Partition function (statistical mechanics)\|partition function]] under the [[grand canonical ensemble]] in statistical mechanics

			===Lower case===
			The lower-case letter ξ is used as a symbol for:

			* [[Random variable]]s
			* Dimensionless distance variable used in the [[Lane-Emden equation]]
			* [[Extent of reaction]] (a topic found most often in [[chemical engineering]] kinetics)
			* [[Eigenvector]]s
			* Damping Ratio C/Ccr(vibrational analysis)
			* A parameter in a [[Pareto distribution#Generalized Pareto distribution\|generalized Pareto distribution]]
			* The symmetric function equation of the [[Riemann zeta function]] in [[mathematics]], also known as the [[Riemann Xi function]]
			* A universal set in the [[set theory]]
			* A number used in the error term of [[Newton–Cotes formulas]] that falls between ''a'' and ''b''
			* One of the two different polypeptide chains of the human embryonic [[hemoglobin]] types Hb-Portland (ξ<sub>2</sub>γ<sub>2</sub>) and Hb-Gower I (ξ<sub>2</sub>ε<sub>2</sub>)
			* The [[correlation function (astronomy)\|correlation function]] in [[astronomy]]
			* Frequency
			* A small displacement in MHD [[plasma stability]] theory
			* A parameter denoted as [[warped time]] used to derive the equations for homogeneous azeotropic distillation
			* The x-coordinate of computational space as used in [[Computational Fluid Dynamics]]
			* Potential difference in physics (in volts)
			* The radial integral in the spin-orbit matrix operator in [[atomic physics]].
			* The [[Killing vector]] in General Relativity.
			* Average Logarithmic Energy Decrement per Collision (neutron calculations in nuclear physics)

			== References ==

			{{DEFAULTSORT:Xi (Letter)}}
			[[Category:Greek letters]]

Nick: Protected "Xi" [edit=autoconfirmed:move=autoconfirmed]

2009-03-01T03:36:38Z

Protected "Xi" [edit=autoconfirmed:move=autoconfirmed]

← Older revision	Revision as of 03:36, 1 March 2009
(No difference)

Nick: New page: Ξξ Xi

2009-03-01T03:36:33Z

New page: Ξξ Xi

New page

Ξξ Xi