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Peter Gustav Lejeune Dirichlet

1805 - 1859

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Johann Peter Gustav Lejeune Dirichlet (German: [ləˈʒœn diʁiˈkleː]; 13 February 1805 – 5 May 1859) was a German mathematician who made contributions to number theory (including creating the field of analytic number theory), and to the theory of Fourier series and other topics in mathematical analysis; he is credited with being one of the first mathematicians to give the modern formal definition of a function. Although his surname is Lejeune Dirichlet, he is commonly referred to by his mononym Dirichlet, in particular for results named after him. Read more on Wikipedia

Since 2007, the English Wikipedia page of Peter Gustav Lejeune Dirichlet has received more than 510,999 page views. His biography is available in 56 different languages on Wikipedia. Peter Gustav Lejeune Dirichlet is the 36th most popular mathematician (up from 37th in 2019), the 148th most popular biography from Germany (up from 158th in 2019) and the 4th most popular German Mathematician.

Peter Gustav Lejeune Dirichlet was a German mathematician who is most famous for his work in number theory. He is responsible for the first rigorous proof of the Prime Number Theorem, which states that the number of primes less than or equal to a given number is asymptotic to the form n/ln(n).

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Among mathematicians, Peter Gustav Lejeune Dirichlet ranks 36 out of 823Before him are John Napier, Augustin-Louis Cauchy, Georg Cantor, Gerolamo Cardano, George Boole, and Kurt Gödel. After him are Ada Lovelace, Gottlob Frege, Niels Henrik Abel, Apollonius of Perga, Archytas, and Johann Bernoulli.

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Among people born in 1805, Peter Gustav Lejeune Dirichlet ranks 4Before him are Hans Christian Andersen, Alexis de Tocqueville, and Giuseppe Mazzini. After him are Princess Sophie of Bavaria, Ferdinand de Lesseps, William Rowan Hamilton, Joseph Smith, Fanny Mendelssohn, Louis Auguste Blanqui, Maria Anna of Bavaria, and Franz Xaver Winterhalter. Among people deceased in 1859, Peter Gustav Lejeune Dirichlet ranks 4Before him are Alexander von Humboldt, Klemens von Metternich, and Alexis de Tocqueville. After him are Oscar I of Sweden, Carl Ritter, Wilhelm Grimm, John Vianney, Ferdinand II of the Two Sicilies, Josip Jelačić, Washington Irving, and Louis Spohr.

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In Germany

Among people born in Germany, Peter Gustav Lejeune Dirichlet ranks 148 out of 6,142Before him are Alfred Jodl (1890), Charles the Fat (839), Meister Eckhart (1260), Johann Christian Bach (1735), Franz von Papen (1879), and Walter Model (1891). After him are Frederick William III of Prussia (1770), Carl Philipp Emanuel Bach (1714), Alois Alzheimer (1864), Johann Friedrich Herbart (1776), Friedrich Ebert (1871), and Pope Joan (null).


Among mathematicians born in Germany, Peter Gustav Lejeune Dirichlet ranks 4Before him are Carl Friedrich Gauss (1777), Gottfried Wilhelm Leibniz (1646), and Bernhard Riemann (1826). After him are Gottlob Frege (1848), Emmy Noether (1882), Karl Weierstrass (1815), August Ferdinand Möbius (1790), Ludolph van Ceulen (1540), Richard Dedekind (1831), Regiomontanus (1436), and Alexander Grothendieck (1928).