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Dirichlet, Peter Gustav Lejeune
Born: 1805 AD
Died: 1859 AD, at 54 years of age.
Nationality: Unknown
Categories: None
Died: 1859 AD, at 54 years of age.
Nationality: Unknown
Categories: None
German mathematician
proved infinitude of prime numbers in any infinite arithmetic sequence of positive integers 1826 (previously conjectured by Karl Friedrich Gauss)
formulated modern definition of mathematical function 1837
eponym of Dirichlet problem, entailing solution of partial differential equation (usually Laplace's equation or Poisson's equation) throughout interior of region, given known values of solution function on boundary of region
brother-in-law of Felix Mendelssohn
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