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Topic: Johann Peter Gustav Lejeune Dirichlet

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	Kids.Net.Au - Encyclopedia > Johann Peter Gustav Lejeune Dirichlet
		Johann Peter Gustav Lejeune Dirichlet (February 13, 1805 - May 5, 1859) was a German mathematician credited with the modern "formal" definition of a function.
		His family hailed from the town of Richelet[?] in Belgium, from which his surname "Lejeune Dirichlet" ("le jeune de Richelet" = "the young chap from Richelet") was derived, and that was where his grandfather lived.
		Dirichlet was born in Düren[?], where his father was the postmaster.
	www.kids.net.au /encyclopedia-wiki/jo/Johann_Peter_Gustav_Lejeune_Dirichlet (263 words)

	Johann Peter Gustav Lejeune Dirichlet - Biocrawler (Site not responding. Last check: )
		Johann Peter Gustav Lejeune Dirichlet (February 13, 1805 - May 5, 1859) was a German mathematician credited with the modern "formal" definition of a function.
		His family hailed from the town of Richelet in Belgium, from which his surname "Lejeune Dirichlet" ("le jeune de Richelet" = "the young chap from Richelet") was derived, and that was where his grandfather lived.
		Dirichlet was born in Düren, where his father was the postmaster.
	www.biocrawler.com /encyclopedia/Peter_Gustav_Dirichlet (300 words)

	Johann Peter Gustav Lejeune Dirichlet
		Johann Peter Gustav Lejeune Dirichlet (February 13, 1805 - May 5, 1859) was a German mathematician credited with the modern "formal" definition of a function.
		His family hailed from the town of Richelet in Belgium, from which his surname "Lejeune Dirichlet" ("le jeune de Richelet" = "the young chap from Richelet") was derived, and that was where his grandfather lived.
		"Johann Peter Gustav Lejeune Dirichlet", MacTutor History of Mathematics, University of St Andrews.
	www.xasa.com /wiki/en/wikipedia/j/jo/johann_peter_gustav_lejeune_dirichlet.html (285 words)

	Dirichlet biography
		Dirichlet obtained leave of absence from Berlin for eighteen months and in the autumn of 1843 set off for Italy with Jacobi and Borchardt.
		Dirichlet had a high teaching load at the University of Berlin, being also required to teach in the Military College and in 1853 he complained in a letter to his pupil Kronecker that he had thirteen lectures a week to give in addition to many other duties.
		Dirichlet is also well known for his papers on conditions for the convergence of trigonometric series and the use of the series to represent arbitrary functions.
	www-groups.dcs.st-and.ac.uk /~history/Biographies/Dirichlet.html (2125 words)

	Johann Peter Gustav Lejeune Dirichlet
		Many details of the Dirichlet family are given in [6] where it is shown that the Dirichlets came from the neighbourhood of Liège in Belgium and not, as many had claimed, from France.
		Dirichlet was appointed to the Berlin Academy in 1831 and an improving salary from the university put him in a position to marry, and he married Rebecca Mendelssohn, one of the composer Felix Mendelssohn's two sisters.
		Dirichlet had a lifelong friend in Jacobi, who taught at Königsberg, and the two exerted considerable influence on each other in their researches in number theory.
	www.professores.uff.br /salete/matematicos/Dirichlet.htm (2090 words)

	Johann Peter Gustav Lejeune Dirichlet Summary
		Lejeune Dirichlet was a professor at the University of Berlin prior to accepting a chair—previously held by Carl Gauss (1777-1855)—at the University of Göttingen.
		Dirichlet is best known, however, for his papers on the convergence of trigonometric series toward a solution, and in the use of such series to represent arbitrary functions.
		Dirichlet was elected a Fellow of the Royal Society in 1855 and is remembered by Crater Dirichlet on the Moon.
	www.bookrags.com /Johann_Peter_Gustav_Lejeune_Dirichlet (2196 words)

	Dirichlet biography
		Dirichlet did not remain in Rome for the whole period, but visited Sicily and then spent the winter of 1844/45 in Florence before returning to Berlin in the spring of 1845.
		Dirichlet had a high teaching load at the University of Berlin, being also required to teach in the Military College and in 1853 he complained in a letter to his pupil Kronecker that he had thirteen lectures a week to give in addition to many other duties.
		Dirichlet is also well known for his papers on conditions for the convergence of trigonometric series and the use of the series to represent arbitrary functions.
	www-history.mcs.st-andrews.ac.uk /Biographies/Dirichlet.html (2125 words)

	Dirichlet (Site not responding. Last check: )
		Johann Peter Gustav Lejeune Dirichlet was the first mathematician to demonstrate that in a mathematical progression with the first term acting as the coprime to the difference, there are an infinite number of prime numbers.
		Dirichlet is probably most famous for his work on convergence of trigonometric series and the use of arbitrary functions.
		Thereafter, Dirichlet succeeded the presitgious Gauss as chair of mathematics at Gottingen.
	members.tripod.com /~noneuclidean/dirichlet.html (219 words)

	Reference.com/Encyclopedia/Johann Peter Gustav Lejeune Dirichlet
		His family hailed from the town of Richelette in Belgium, from which his surname "Lejeune Dirichlet" ("le jeune de Richelette", French for "the young chap from Richelette") was derived.
		In 1831, he married Rebecca Henriette Mendelssohn Bartholdy, who came from a distinguished family of converts from Judaism to Christianity; she was a granddaughter of the philosopher Moses Mendelssohn, daughter of Abraham Mendelssohn Bartholdy and a sister of the composers Felix Mendelssohn Bartholdy and Fanny Mendelssohn.
		Dirichlet characters (number theory, specifically Zeta and L-functions.
	www.reference.com /browse/wiki/Dirichlet (353 words)

	Johann Peter Gustav Lejeune Dirichlet
		Dirichlet taught at the University of Breslau in 1827 and the University of Berlin from 1828 to 1855.
		His successors, the outstanding mathematicians Riemann, Clebsch, and Dirichlet upheld this tradition and usually gave lectures in various branches of theoretical physics as well as in pure mathematics.
		First, Dirichlet is best known for his papers on conditions, for the convergence of trigonometric series and the use of the series to represent arbitrary functions.
	www.ce.berkeley.edu /~rlt/ce231/asst2/Dirichlet.htm (961 words)

	Fermat's Last Theorem: Johann Dirichlet
		Johann Peter Gustav Lejeune Dirichlet was born on February 13, 1805 in Duren which at the time was part of Napoleon's empire.
		In 1825, Dirichlet succeeded in proving it true for the case where one of the numbers x,y,z is divisible by 10.
		Dirichlet found the standards at the university were disappointingly low and in 1828, he transferred to the University of Berlin.
	fermatslasttheorem.blogspot.com /2005/10/johann-dirichlet.html (675 words)

	Dirichlet
		Dirichlet tenía un problema para dedicarse a la enseñanza en Alemania, porque no tenía el título de doctor lo que era imprescindible para obtener la habilitación para enseñar y además no sabía latín.
		Dirichlet fue amigo toda su vida de Jacobi que enseñaba en Königsberg, ambos se influyeron mutuamente en sus investigaciones sobre teoría de números.
		Dirichlet visitó a Jacobi y al comprobar su difícil situación escribió a Humboldt pidiéndole que intercediese ante Friedrich Wilhelm IV para ayudar económicamente a Jacobi.
	www.telefonica.net /web2/lasmatematicasdemario/Historia/Biografias/Dirichlet.htm (635 words)

	Dirichlet
		Lejeune Dirichlet proved that in any arithmetic progression with first term coprime to the difference there are infinitely many primes.
		Dirichlet is best known for his papers on conditions for the convergence of trigonometric series and the use of the series to represent arbitrary functions.
		Gustav L Dirichlet was elected to the Royal Society of London in 1855.
	members.tripod.com /sfabel/mathematik/database/Dirichlet.html (421 words)

	Dirichlet, Johann Peter Gustav Lejeune - MSN Encarta
		Dirichlet, Johann Peter Gustav Lejeune (Düren 1805 – Gottinga 1859), matematico tedesco.
		Trova altre informazioni su Dirichlet, Johann Peter Gustav Lejeune
		Cerca in Encarta Dirichlet, Johann Peter Gustav Lejeune
	it.encarta.msn.com /encyclopedia_1041537305/Dirichlet_Johann_Peter_Gustav_Lejeune.html (72 words)

	Reference.com/Encyclopedia/Johann Peter Gustav Lejeune Dirichlet
		Dirichlet also completed his own proof almost at the same time; he later also produced a full proof for the case
		Dirichlet's theorem on diophantine approximation (number theory and aproximation)
		The Life and Work of Gustav Lejeune Dirichlet (1805–1859) by Jürgen Elstrodt.
	www.reference.com /browse/wiki/Johann_Peter_Gustav_Lejeune_Dirichlet (353 words)

	Johann Peter Gustav Lejeune Dirichlet - Vükiped
		Famül omik älicinon de zif: Richelette in Belgän, kelos kleilükon näinemi: „Lejeune Dirichlet“: „yunan se Richelette“ in Fransänapük.
		Pos deadam omik, tidods ela Dirichlet e vobots omik votik pö numateor päkonletons, päredakons e päpübons fa flen ä kematematan omik: hiel Richard Dedekind tiädü Vorlesungen über Zahlentheorie (Tidods dö Numateor).
		Dirichlet, Johann Peter Gustav Lejeune, Vorlesungen über Zahlentheorie.
	vo.wikipedia.org /wiki/Johann_Peter_Gustav_Lejeune_Dirichlet (266 words)

	Mathematik in Göttingen: Peter Gustav Lejeune-Dirichlet (Site not responding. Last check: )
		Dirichlet war sehr glücklich in dieser Stellung, die ihm viel Zeit für eigene Studien ließ.
		Mathematisch gesehen vereinigten sich in Dirichlet zwei Strömungen - die erste war die Zahlentheorie in der Nachfolge von Gauß, die zweite die angewandte Mathematik der französischen Schule um Fourier.
		Dirichlet benutzte gerade diese Überlegungen aus der angewandten Mathematik für den Beweis seines berühmten Satzes über Primzahlen in arithmetischen Progressionen.
	www.math.uni-goettingen.de /Personen/Bedeutende_Mathematiker/dirichlet.html (464 words)

	Assignment1 (Site not responding. Last check: )
		Dirichlet is best known for his work on number theory and analysis.
		He said that y is a function of x when each value of x in a given interval has a unique value of y.
		Later in his life Dirichlet became a friend of Gauss, and succeeded him as a professor at the University of Gottingen.
	www.mathstat.dal.ca /~kgardner/Assignment1.htm (235 words)

	Dirichlet distribution - MLpedia
		The Dirichlet distribution (after Johann Peter Gustav Lejeune Dirichlet) is a continuous multivariate probability distribution.
		The Dirichlet distribution is the multivariate generalization of the beta distribution.
		It is the conjugate prior of the multinomial distribution.
	www.mlpedia.org /index.php?title=Dirichlet_distribution (187 words)

	Untitled Document
		Johann Peter Gustav Lejeune-Dirichlet was a pivotal figure in early 19th Century science.
		The positions of the individual links in the chain are a function of the relationship of the boundary conditions (position of the hanging points relative to the length of the chain) to the characteristic curvature of the principle of gravitation, and not by a pair-wise relationship among the links themselves.
		It was Riemann’s genius to recognize, through this application of Dirichlet’s Principle, that the principle of least-action of a physical process could be understood completely by the relationship between the boundary conditions and the singularities, and that this relationship could be expressed uniquely by Riemann’s geometric concept of complex functions.
	wlym.com /antidummies/part58.html (4050 words)

	Kennislink - Dirichlet — Een man met een principe
		Voor die tijd heeft Dirichlet al aan verschillende universiteiten in Frankrijk en later Duitsland gestudeerd en gewerkt, waar hij eigenlijk toen al zijn grote wiskundige ontdekkingen heeft gedaan.
		Leuk feitje: Dirichlet was getrouwd met de zus van de bekende componist Felix Mendelssohn-Bartholdy.
		Het idee waar we hem het meest dankbaar voor moeten zijn is het zogenaamde ‘laadjesprincipe van Dirichlet’ of ‘Dirichletprincipe’, dat zegt dat als je een bureau hebt met n laadjes waar je n+1 paperclips in kwijt wilt, je altijd minstens twee paperclips in hetzelfde laatje moet stoppen.
	www.kennislink.nl /web/show?id=146801&vensterid=811&cat=60664 (324 words)

	Dirichlet (Site not responding. Last check: )
		Dirichlet was the first mathematician to define rigorously the concept of a function.
		While Dirichlet's definition was still a dynamic one based on assignments (as opposed to the static definition as set of pairs which is now accepted as state of the art in what concerns rigor) it brought functions into the modern era.
		His name is also preserved in the Dirichlet problem in partial differential equations, an important problem in applied and pure mathematics that he formulated and studied for the first time.
	www.math.fau.edu /schonbek/Modern_Analysis/calcmath18.html (243 words)

	Science Fair Projects - Dirichlet kernel
		It is named after Johann Peter Gustav Lejeune Dirichlet.
		The importance of the Dirichlet kernel comes from its relation to Fourier series.
		Therefore the Dirichlet kernel, which are just the partial sums of this series, can be thought of as an approximate identity.
	www.all-science-fair-projects.com /science_fair_projects_encyclopedia/Dirichlet_kernel (444 words)

	[No title]
		Johann Peter Gustav Lejeune Dirichlet was a pivotal figure in early Nineteenth-century science.
		Dirichlet died two years later, and Riemann, now 33 years old, was appointed to Dirichlet's chair, a position he held until his own premature death only seven years later.
		What Riemann called “Dirichlet's Principle,” arose out of Gauss's application of the complex domain to his investigations in geodesy and terrestrial magnetism, the former organized in collaboration with Heinrich Schumacher beginning in 1818, and the latter initiated by Alexander von Humboldt in 1832.
	www.schillerinstitute.org /fid_02-06/2004/044_riemann_dirichlet.html (3892 words)

	BlurtIt: What is the pigeonhole principle?
		The pigeonhole principle was first stated by Dirichlet in the year 1834.
		Johann Peter Gustav Lejeune Dirichlet was a German mathematician from a town in Belgium.
		Dirichlet’s lectures on number theory were collected and published posthumously after he died in 1859.
	www.blurtit.com /q970841.html (202 words)

	Johann Peter Gustav Lejeune Dirichlet - Definition, explanation
		Johann Peter Gustav Lejeune Dirichlet - Definition, explanation
		After his death, Dirichlet's lectures and other results in number theory were collected, edited and published by his friend and fellow mathematician Richard Dedekind under the title Vorlesungen über Zahlentheorie (Lectures on Number Theory).
		Dirichlet, Johann Peter Gustav Lejeune, Vorlesungen uber Zahlentheorie.
	www.calsky.com /lexikon/en/txt/j/jo/johann_peter_gustav_lejeune_dirichlet.php (307 words)

	Pour le Mérite
		Johann Friedrich Dieffenbach in Berlin, surgeon /chirurg --- 1842
		Peter Andreas Hansen in Gotha, /astronom --- 1866
		Johann Peter Molin in Stockholm, /bildhauer --- 1870
	www.pourlemerite.org /peace/peace.php (4431 words)

	1805
		Februar: Johann Baptist Sonderland, deutscher Maler und Radierer († 1878)
		Oktober: Gustav von Struve, deutscher Politiker und Revolutionär († 1870)
		Dezember: Johann von Lamont, schottisch-deutscher Astronom und Physiker († 1879)
	www.weblexikon.de /1805.html (1263 words)

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