Leon honorary award

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Leon Ehrenpreis (born May 22, 1930 in Brooklyn ; † August 16, 2010 ibid) was an American mathematician who dealt with analysis .

Live and act

Ehrenpreis attended Stuyvesant High School in New York City and studied mathematics at City College of New York ( Bachelor 1950) and at Columbia University , where he received his master’s degree in 1951 and his doctorate in 1953 under Claude Chevalley ( Theory of distributions in compact spaces ). As a post-doctoral student, he was an instructor at Johns Hopkins University in 1953/54 and at the Institute for Advanced Study from 1954 to 1957 . From 1957 he was associate professor at Brandeis University and from 1959 at Yeshiva University . From 1962 to 1968 he was professor at the Courant Institute of Mathematical Sciences of New York University and then professor at Yeshiva University. He was a professor at Temple University since 1984 .

He dealt with partial differential equations , distributions , automorphic functions, several complex variables and the Radon transform . He is known for the Malgrange-Ehrenpreis theorem that differential equations with constant coefficients have a Green function , proven in 1954 by Ehrenpreis and Bernard Malgrange . In 1960 he announced a theorem known as the fundamental principle of Ehrenpreis and Palamodov, which shows the representability of the solutions of systems of polynomial partial differential operators with constant coefficients by a generalized Fourier transform.

Ehrenpreis had been married since 1961 and had eight children. From 1970 to 2007 he took part regularly in the New York City Marathon .

In addition to his work as a mathematician, he was a Talmud scholar and rabbi, a student of Rabbi Moshe Feinstein (1895–1986), whom he advised on scientific issues until his death in 1986.

His PhD students include Carlos Berenstein and Carlos J. Moreno .

Fonts

  • Fourier analysis in several complex variables , Wiley 1970, Dover 2006
  • The universality of the Radon Transform , Oxford, Clarendon Press 2003

Web links

Individual evidence

  1. ^ Theory of distributions in locally compact spaces , Memoirs AMS, Volume 21, 1956
  2. ↑ Ehrenpreis Solution of some problems of division , Part 1 ( Division by a polynomial of derivation ), American Journal of Mathematics, Volume 76, 1954, pp. 883-903, Part 2 ( Division by a punctural distribution ), Volume 77, 1955 , Pp. 286-292
  3. ↑ Malgrange Existence et approximation des solutions des equations aux derivees partielles et des equations de convolution , Ann. Inst. Fourier, Grenoble, Volume 6, 1965/56, pp. 271-355
  4. ↑ Ehrenpreis The fundamental principle of linear constant coefficient partial differential equations , Proc. Int. Symp. Linear Spaces, Jerusalem 1960, pp. 161-174, full proof in Ehrenpreis Fourier Analysis in several complex variables , 1970
  5. ↑ VP Palamodov linear differential operators with constant Coefficients , Springer 1970
  6. ↑ Represented, for example, in L. Hansen The fundamental principle of L. Ehrenpreis , in Partial Differential Equations , Banach Center Publ., Volume 10, 1983, pdf
personal data
SURNAME Honorary award, Leon
BRIEF DESCRIPTION American mathematician
DATE OF BIRTH May 22, 1930
PLACE OF BIRTH Brooklyn
DATE OF DEATH August 16, 2010
Place of death Brooklyn