Johann Peter Gustav Lejeune Dirichlet ( ; 13 February 1805 – 5 May 1859) was a German mathematician with deep 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.
Read more about Johann Peter Gustav Lejeune Dirichlet: Honours, Selected Publications
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