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Einar Carl Hille
Einar Hille (birth name Carl Einar Hille) was an American mathematician , born 28 June 1894 in New York, USA, and died 12 February 1980 in La Jolla, California.
Hille's main work was on integral equations , differential equations , special functions , Dirichlet series and Fourier series . Later in his career his interests turned more towards functional analysis .
His name persists among others in the Hille-Yosida theorem .
Hille was married to Kirsti Hille, daughter of mathematician Øystein Ore , and had two sons, Harald and Bertil Hille .
References
K Yosida, Some aspects of E. Hille's contributions to semigroup theory, Integral Equations Operator Theory 4 (3) (1981).
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