Peter gustav lejeune dirichlet biography of william

German mathematician (1805–1859)

"Dirichlet" redirects here.

Peter gustav lejeune dirichlet biography of william

For other uses, see Dirichlet (disambiguation).

In this article, the surname is Lejeune Dirichlet.

Johann Peter Gustav Lejeune Dirichlet (;^[1]German:[ləˈʒœndiʁiˈkleː];^[2] 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, and heat diffusion, and hydrodynamics.

Although his surname is Lejeune Dirichlet, he is commonly referred to by his mononymDirichlet, 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