Barbara Keyfitz

Barbara Lee Keyfitz ( born November 7, 1944 in Ottawa, Canada ) is a Canadian- American mathematician.

Life and work

Barbara Keyfitz was the daughter of Nathan Keyfitz demographers (1913-2010) and his wife Beatrice ( Orkin ) Keyfitz ( 1913-2009 ). She studied mathematics and earned her Bachelor of Science degree in 1966 from the University of Toronto. Then she moved to New York University, where in 1968 a Master of Science received. In 1970, she was at the Courant Institute of Mathematical Sciences of New York University for Ph.D. doctorate. Your doctor father was Peter Lax. From 1970 to 1976 she was an Assistant Professor at Columbia University and from 1977 to 1979 Lecturer at Princeton University. Afterwards she worked at Arizona State University as an Assistant Professor (1979-1981) and Associate Professor (1981-1983 ). From 1983 to 2008 she worked at the University of Houston and indeed as an Associate Professor ( 1983-1987 ), Professor ( 1987-2008 ), John and Rebecca Moores University Scholar (1998-2000 ) and John and Rebecca Moores Professor ( 2000-2008 ). From 2004 to 2008 she was also President of the Fields Institute at the University of Toronto. Since 2009, Dr. Charles Saltzer Professor at Ohio State University. As a guest scientist, she was at the University of Nice Sophia -Antipolis (1980 ), Duke University (1981 ), University of California, Berkeley (1982 ), University of Saint -Etienne (1988 ), Institute for Mathematics and its Applications (1989 ), University of Warwick ( 1989), Fields Institute at the University of Waterloo (1993 ), Brown University (1999-2000 ), Chinese University of Hong Kong (2001) and the National Center for Theoretical Sciences, Taiwan ( 2002).

Keyfitz works in the field of applied mathematics. It deals with nonlinear partial differential equations, especially with hyperbolic conservation laws, but also with conservation laws that are not strictly hyperbolic or change their type of hyperbolic according to elliptical. These can occur in models of multiphase flow in porous media. Keyfitz dealt with free boundary value problems, to better understand transonic flows, and she studied bifurcation in reaction diffusion equations, particularly in the theory of shock waves.

In 1992 she became a Fellow of the American Association for the Advancement of Science. In 2005 she was awarded the warrior - Nelson Prize of the Canadian Mathematical Society, 2006 Esther Farfel Award from the University of Houston and 2012, the SIAM Prize for Distinguished Service to the Profession. From 2005 to 2007 she was president of the Association for Women in Mathematics and since 2011 she is president of the International Council for Industrial and Applied Mathematics. In 2012 she was allowed to keep the Noether Lecture. Keyfitz is a member of the American Mathematical Society, the Society for Industrial and Applied Mathematics, from Sigma Xi, the Canadian Mathematical Society and the Canadian Applied and Industrial Mathematics Society.

Barbara Keyfitz is married to the mathematician Martin Golubitsky and has two children.

Works

• Barbara Quinn Kefitz [actually: Barbara Keyfitz Quinn ]: Time- Decreasing Functionals of Nonlinear Conservation Laws. Thesis ( Ph. D. ), New York University, 1970
• Barbara Lee Keyfitz and Herbert C. Kranzer (Editor): Nonstrictly hyperbolic conservation laws. Proceedings of an AMS Special Session held January 9-10, 1985 ( = Contemporary Mathematics, Volume 60 ). American Mathematical Society, Providence, 1987, ISBN 0-8218-5069-5
• Barbara Lee Keyfitz, Michael Shearer (Editor): Nonlinear evolution equations that change type ( = IMA volumes in mathematics and its applications, Volume 27 ). Springer, Berlin [ et al ], 1990, ISBN 3-540-97353-2