| 释义 |
- Selected works
- References
- External links
Joseph Leonard Ullman (30 January 1923, Buffalo, New York – 11 September 1995, Chelsea, Michigan) was a mathematician who worked on classical analysis with a focus on approximation theory.[1]Ullman received his A.B. from the University of Buffalo and his graduate study was interrupted by service in the U.S. Army in World War II. He was injured, received a Purple Heart, and spent the rest of the war as a mathematics instructor. He received a Ph.D. in 1949 from Stanford University with thesis Studies on Faber Polynomials under the direction of Gábor Szegő. Ullman became an instructor at the University of Michigan in 1949, an assistant professor in 1954, an associate professor in 1962, and a professor in 1966. He wrote forty-three research papers. During his career at the University of Michigan he supervised eleven doctoral theses.[2][3] Selected works- {{cite journal|title=Studies in Faber polynomials. I|journal=Trans. Amer. Math. Soc.|year=1960|volume=94|issue=3|pages=515–528|mr=112955|doi=10.1090/s0002-9947-1960-0112955-2 |last1=Ullman|first1=Joseph L.}}
- {{cite journal|title=Tchebycheff quadrature on the infinite interval|journal=Trans. Amer. Math. Soc.|year=1963|volume=107|issue=2|pages=291–299|mr=0147817|doi=10.1090/s0002-9947-1963-0147817-0 |last1=Ullman|first1=J. L.}}
- {{cite journal|title=A class of weight functions for which Tchebycheff quadrature is possible|journal=Bull. Amer. Math. Soc.|year=1966|volume=72|issue=6|pages=1073–1075|mr=0204931|doi=10.1090/s0002-9904-1966-11651-8|last1=Ullman|first1=J. L.}}
- with R. C. Lyndon: {{cite journal|title=Groups of elliptic linear fractional transformations|journal=Proc. Amer. Math. Soc.|year=1967|volume=18|issue=6|pages=1119–1124|mr=0222182|doi=10.1090/s0002-9939-1967-0222182-8|last1=Lyndon|first1=R. C.|last2=Ullman|first2=J. L.}}
- {{cite journal|title=The location of the zeros of the derivatives of Faber polynomials|journal=Proc. Amer. Math. Soc.|year=1972|volume=34|issue=2|pages=422–424|mr=0299761|doi=10.1090/s0002-9939-1972-0299761-7|last1=Ullman|first1=J. L.}}
- {{cite journal|title=On the regular behaviour of orthogonal polynomials|journal=Proc. London Math. Soc.|year=1972|volume=24|issue=3|pages=119–148|doi=10.1112/plms/s3-24.1.119|last1=Ullman|first1=J. L.}}
- {{cite journal|title=Orthogonal polynomials associated with an infinite interval|journal=Michigan J. Math.|year=1980|volume=27|issue=3|pages=353–363|mr=584699|doi=10.1307/mmj/1029002408|last1=Ullman|first1=J. L.}}
- with Matthew F. Wyneken: {{cite journal|title=Weak limits of zeros of orthogonal polynomials|journal=Constr. Approx.|year=1986|volume=2|issue=4|pages=339–347|mr=892160|doi=10.1007/bf01893436|last1=Ullman|first1=J. L.|last2=Wyneken|first2=M. F.}}
- with Vilmos Totik: {{cite journal|title=Local asymptotic distribution of zeros of orthogonal polynomials|journal=Trans. Amer. Math. Soc.|year=1994|volume=341|issue=2|pages=881–894|mr=1150019|doi=10.1090/s0002-9947-1994-1150019-2|last1=Totik|first1=Vilmos|last2=Ullman|first2=Joseph L.}}
References1. ^{{cite journal|author=Assche, Walter|title=Death of Joe L. Ullman (Topic #11)|journal=Op-Sf Net|date=Nov 9, 1995|url=http://math.nist.gov/opsf/personal/op2611.html}}
2. ^Joseph Ullman | Faculty History Project – U. of Michigan
3. ^{{cite journal|author1=Lachance, Michael|author2=Van Assche, Walter|title=In memoriam: Joseph L. Ullman (1923–1995)|journal=J. Approx. Theory|year=2010|volume=162|issue=4|pages=639–645|url=http://www.math.technion.ac.il/hat/people/obits/ullman.pdf|doi=10.1016/j.jat.2009.05.001}}
External links- {{MathGenealogy|id=7881}}
{{authority control}}{{DEFAULTSORT:Ullman, Joseph Leonard}}{{mathematician-stub}} 6 : American mathematicians|1923 births|1995 deaths|Approximation theorists|University of Michigan faculty|20th-century mathematicians |