Leon Ehrenpreis

Leon was born in New York City to a family of Jewish immigrants from Eastern Europe. He graduated from Stuyvesant High School and studied Mathematics as an undergraduate at City College of New York. Afterward, he enrolled as a doctoral student at Columbia University where he studied under mathematician Claude Chevalley, obtaining his PhD in 1953 at the age of 23. His doctoral thesis was entitled "Theory of Distributions in Locally Compact Spaces".{{cite journal|title=Remembering Leon Ehrenpreis|last1=Struppa|first1=Danielle C.|date=May 2011|journal=Notices of the AMS|volume=58 |issue=5|url=https://www.math.tamu.edu/~kuchment/Ehrenpreis_notices.pdf}}

Ehrenpreis was also a Rabbi, having received his ordination from the renowned Rabbi Moshe Feinstein.{{cite news|title=Eliezer 'Leon' Ehrenpreis, 80, rabbi, Temple mathematician|last=Naedele|first=Walter F.|date=September 5, 2010|newspaper=The Philadelphia Inquirer|url=http://www.philly.com/philly/obituaries/20100905_Eliezer__Leon__Ehrenpreis__80__rabbi__Temple_mathematician.html}} He was the author of a work on the Chumash and other religious topics, currently in manuscript.

Ehrenpreis ran the New York City Marathon every year from its inception until 2007.

• {{citation|mr=0068123

|last=Ehrenpreis|first= Leon

|title=Solution of some problems of division. I. Division by a polynomial of derivation

|journal=Amer. J. Math.|volume= 76|year=1954|pages= 883–903

|issue=4|doi=10.2307/2372662|jstor=2372662}}

• {{citation|mr=0070048

|last=Ehrenpreis|first= Leon|author-mask=2

|title=Solution of some problems of division. II. Division by a punctual distribution

|journal=Amer. J. Math.|volume= 77|year=1955|pages= 286–292

|issue=2|doi=10.2307/2372532|jstor=2372532}}

• {{cite journal|title=Uniformly Bounded Representations of Groups|first1=Leon|last1=Ehrenpreis|first2=F. I.|last2=Mautner|authorlink2=Friederich Ignaz Mautner|journal=Proc Natl Acad Sci U S A|date=15 April 1955|volume=41|issue=4|pages=231–233|pmc=528064|pmid=16589653|doi=10.1073/pnas.41.4.231|bibcode=1955PNAS...41..231E|doi-access=free}}
• {{cite journal|title=The Division Problem for Distributions|first=Leon|last=Ehrenpreis|journal=Proc Natl Acad Sci U S A|date=15 October 1955|volume=41|issue=10|pages=756–758|pmc=528179|doi=10.1073/pnas.41.10.756|pmid=16589744|bibcode=1955PNAS...41..756E|doi-access=free}}
• {{cite journal|title=Completely Inversible Operators|first=Leon|last=Ehrenpreis|author-mask=2|journal=Proc Natl Acad Sci U S A|date=15 November 1955|volume=41|issue=11|pages=945–946|pmc=534310|doi=10.1073/pnas.41.11.945|pmid=16589777|bibcode=1955PNAS...41..945E|doi-access=free}}
• {{cite journal|title=General Theory of Elliptic Equations|first=Leon|last=Ehrenpreis|author-mask=2|journal=Proc Natl Acad Sci U S A|date=January 1956|volume=42|issue=1|pages=39–41|pmc=534228|pmid=16589811|doi=10.1073/pnas.42.1.39|bibcode=1956PNAS...42...39E|doi-access=free}}
• {{cite journal|title=Cauchy's Problem for Linear Differential Equations with Constant Coefficients|first=Leon|last=Ehrenpreis|author-mask=2|journal=Proc Natl Acad Sci U S A|date=September 1956|volume=42|issue=9|pages=642–646|pmc=534268|doi=10.1073/pnas.42.9.642|pmid=16589923|bibcode=1956PNAS...42..642E|doi-access=free}}
• {{cite journal|title=Sheaves and differential equations|first=Leon|last=Ehrenpreis|author-mask=2|journal=Proc. Amer. Math. Soc.|year=1956|volume=7|pages=1131–1138|mr=0085419|doi=10.1090/s0002-9939-1956-0085419-7|doi-access=free}}
• {{cite journal|title=On the theory of kernels of Schwartz|first=Leon|last=Ehrenpreis|author-mask=2|journal=Proc. Amer. Math. Soc.|year=1956|volume=7|issue=4|pages=713–718|mr=0082637|doi=10.1090/s0002-9939-1956-0082637-9|doi-access=free}}
• {{cite journal|title=Analytic functions and the Fourier transform of distributions, II|first=Leon|last=Ehrenpreis|author-mask=2|journal=Trans. Amer. Math. Soc.|year=1958|volume=89|issue=2|pages=450–483|mr=0105616|doi=10.1090/s0002-9947-1958-0105616-8|doi-access=free}}
• {{cite journal|title=Analytically uniform spaces and some applications|first=Leon|last=Ehrenpreis|author-mask=2|journal=Trans. Amer. Math. Soc.|year=1961|volume=101|pages=52–74|mr=0131756|doi=10.1090/s0002-9947-1961-0131756-3|doi-access=free}}
• {{cite journal|title=A new proof and an extension of Hartog's theorem|first=Leon|last=Ehrenpreis|author-mask=2|journal=Bull. Amer. Math. Soc.|year=1961|volume=67|issue=5|pages=507–509|mr=0131663|doi=10.1090/s0002-9904-1961-10661-7|doi-access=free}}
• {{cite journal|title=Holomorphic convexity of Teichmüller spaces|first1=Lipman|last1=Bers|authorlink=Lipman Bers|first2=Leon|last2=Ehrenpreis|journal=Bull. Amer. Math. Soc.|year=1964|volume=70|issue=6|pages=761–764|mr=0168800|doi=10.1090/s0002-9904-1964-11230-1|doi-access=free}}
• {{cite journal|title=Hyperbolic equations and group representations|first=Leon|last=Ehrenpreis|journal=Bull. Amer. Math. Soc.|year=1975|volume=81|issue=6|pages=1109–111|mr=0419685|doi=10.1090/s0002-9904-1975-13936-x|url=http://projecteuclid.org/euclid.bams/1183537425|doi-access=free}}
• {{cite journal|title=Reflections, removable singularities, and approximations for partial differential equations, II|first=Leon|last=Ehrenpreis|author-mask=2|journal=Trans. Amer. Math. Soc.|year=1987|volume=302|pages=1–45|mr=887494|doi=10.1090/s0002-9947-1987-0887494-0|doi-access=free}}

• Ehrenpreis's fundamental principle
• Ehrenpreis conjecture

{{Reflist}}

• {{MathGenealogy|id=13417}}
• {{citation|title=Analysis, Geometry, Number Theory: The Mathematics of Leon Ehrenpreis

|first=Eric L. |last=Grinberg

|year=2000

|publisher=American Mathematical Society

|pages=508

|isbn =0-8218-1148-7}}

• [https://web.archive.org/web/20110419010822/http://www.temple.edu/temple_times_archives/2002/11-7-02/marathon.html "One thing you can count on is this math prof on the run"], Temple Times, November 7, 2002 Volume 33 Number 10 (retrieved August 17, 2010)

• {{Citation | title=Remembering Leon Ehrenpreis (1930–2010) | url=https://www.ams.org/notices/201105/rtx110500674p.pdf | year=2011 | journal=Notices of the American Mathematical Society | volume=58 | issue=5 | pages=674–681}}

{{Authority control}}

{{DEFAULTSORT:Ehrenpreis, Leon}}

Category:2010 deaths

Category:1930 births

Category:20th-century American mathematicians

Category:21st-century American mathematicians

Category:Jewish American scientists

Category:Temple University faculty

Category:Academics from Brooklyn

Category:Mathematicians from New York (state)

Category:Columbia Graduate School of Arts and Sciences alumni

Category:Stuyvesant High School alumni