page_title: Peter Gustav Lejeune Dirichlet
hierarchical_section_title: Peter Gustav Lejeune Dirichlet
caption_attribution_description: Peter Gustav Lejeune Dirichlet
context_page_description: Johann Peter Gustav Lejeune Dirichlet was a German mathematician who made deep contributions to 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 official surname is Lejeune Dirichlet, he is commonly referred to as just Dirichlet, particularly for the eponym.
context_section_description: Johann Peter Gustav Lejeune Dirichlet (German: [ləˈʒœn diʀiˈkleː]; 13 February 1805 – 5 May 1859) was a German mathematician who made 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.
  Although his official surname is Lejeune Dirichlet, he is commonly referred to as just Dirichlet, particularly for the eponym.
caption: Peter Gustav Lejeune Dirichlet
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