Peter Gustav Lejeune Dirichlet

Pioneering German mathematician known for analytic number theory and Fourier series.

Chronology: 1805-02-13 – 1859-05-05

Origins & Early Life

Johann Peter Gustav Lejeune Dirichlet (; German: [ləˈʒœn diʁiˈkleː]; 13 February 1805 – 5 May 1859) was a German mathematician. In number theory, he proved special cases of Fermat's Last Theorem and created analytic number theory. In analysis, he advanced the theory of Fourier series and was one of the first to give the modern formal definition of a function. In mathematical physics, he studied potential theory, boundary-value problems, heat diffusion, and hydrodynamics.

Pivotal Works & Achievements

Although his surname is Lejeune Dirichlet, he is commonly referred to by his mononym Dirichlet, in particular for results named after him. == Biography == === Early life (1805–1822) === Gustav Lejeune Dirichlet was born on 13 February 1805 in Düren, a town on the left bank of the Rhine which at the time was part of the First French Empire, reverting to Prussia after the Congress of Vienna in 1815. His father Johann Arnold Lejeune Dirichlet was the postmaster, merchant, and city councilor. His paternal grandfather had come to Düren from Richelette (or more likely Richelle ), a small community 5 km (3 miles) north east of Liège in Belgium, from which his surname "Lejeune Dirichlet" ("le jeune de Richelette", French for...

Enduring Legacy & Impact

The historical impact and works continue to influence the modern world.

Source: Wikipedia