Professor Sun-Yung Alice Chang of Princeton University was the featured guest speaker for the department’s annual Women in Mathematics Day on November 19, 2009. Organized by Professor Donatella Danielli, the day’s activities included:
- 12:00 – 1:30 p.m.— Luncheon (Lafayette Room, PMU)
- 4:30-5:30 p.m. — Jean E. Rubin Memorial Lecture (BRNG B268)
Alice Chang, “Q-curvature in Conformal Geometry”
Professor Chang is Chair of the Mathematics Department at Princeton University. Throughout her career, she has received numerous awards for her mathematical achievements and service to the community. She was the recipient of an Alfred P. Sloan Fellowship and a Guggenheim Foundation Fellowship, and she is a member of the American Academy of Arts and Sciences and the National Academy of Sciences. She served as Vice President of the American Mathematical Society (AMS) from 1989 to 1991, and in 1995, she received the AMS Ruth Lyttle Satter Prize for outstanding contributions to mathematics research by a woman. In 2002, she was an invited plenary speaker at the International Congress of Mathematicians (ICM), the most prestigious invitation a mathematician can aspire to have in his or her career. Prof. Chang has also been active in many efforts to increase the representation of women in mathematics.
Jean E. Rubin was Professor of Mathematics at Purdue University from 1967 until her death in 2002. She received a B.S. from Queen’s College in New York City in 1948, an M.A. from Columbia in 1949, and a Ph.D. from Stanford in 1955. She taught at Oregon and Michigan State before coming to Purdue. Professor Rubin was the author of more than 40 papers and five books in set theory and questions related to the axiom of choice.
Leonard David Berkovitz died suddenly but peacefully on October 13, 2009. He was born in Chicago, Illinois, on January 24, 1924.
In 1941, Len began his college studies as a chemistry major at the University of Chicago. When World War II started, he joined the military, completing meteorology training programs at the University of Wisconsin and the University of Chicago. He was commissioned as a Lieutenant in the U.S. Army Air Corps and served as a weather officer.
After completing military service, Len resumed his studies at the University of Chicago. He was elected to Sigma Xi and Phi Beta Kappa honoraries and received a B.S. in meteorology in 1946. He considered graduate work in physics, but chose mathematics and entered graduate school at the University of Chicago, receiving a master’s degree in 1948 and a doctorate in 1951. His thesis, written under the direction of Antoni Zygmund, was in the area of double trigonometric series.
From 1951 to 1952, Len was an Atomic Energy Commission Postdoctoral Fellow at Stanford University. From 1952 to 1954, he was a Research Fellow at the California Institute of Technology, where he conducted research in asymptotic expansions. While at Caltech, he met Anna Whitehouse, who was working in a tissue culture laboratory at Cedars of Lebanon Hospital. They were married on June 18, 1953.
In 1954, Len joined the Mathematics Division at the Rand Corporation, where he worked on the mathematical theory of games and on a variety of tactical problems for the Air Force. He participated as a technical observer in Air Force tactical exercises and helped introduce the novel idea (now common practice) of using simulation methods for determining the outcome of tactical engagements.
In 1962, Len joined the Purdue faculty as Professor of Mathematics. He was Head of the Mathematics Department from 1975 to 1980 and Acting Head from 1989-1990. He served on numerous curriculum and administrative committees, and he remained active in research and teaching until his retirement in 2003. Eleven students obtained Ph.D. degrees under his supervision.
Len’s research focused on differential games, optimal control theory, and nonclassical variational problems. He was the author of several textbooks and numerous scientific papers. Len served as associate editor, editor, and managing editor for SIAM Journal on Control and Optimization from 1967 to 1991. He was associate editor for the Journal of Optimization Theory and Applications and for the Journal of Mathematical Analysis and Applications. He was a member of the editorial Committee of Mathematical Reviews from 1985 to 1991.
Len is survived by his wife, Anna; sons Dan M. (Michele) of Bethesda, Md., and Kenneth E. (Nancy) of Akron, Ohio; and grandchildren Elizabeth, Jonathan, Matthew, Zoe and Eli.
Donations in memory of Len can be made to the American Heart Association or to Purdue Foundation for the Leonard D. and Anna W. Berkovitz Scholarship Fund, which provides scholarships for undergraduate mathematics majors.