Linda Keen

Linda Jo Goldway Keen (born 9 August 1940 in New York City, New York) is a mathematician and a fellow of the American Mathematical Society. Since 1965, she has been a Professor in the Department of Mathematics and Computer Science at Lehman College of The City University of New York and a Professor of Mathematics at The Graduate Center of The City University of New York.[1]

Linda Keen

Professional career

As a high school student she attended the Bronx High School of Science. She received her Bachelor of Science degree from the City College of New York, then studied at the Courant Institute of Mathematical Sciences, earning her Doctor of Philosophy in mathematics in 1964. She wrote her thesis on Riemann surfaces under the direction of Lipman Bers at NYU.[2]

Keen has worked at the Institute for Advanced Study, Hunter College, University of California at Berkeley, Columbia University, Boston University, Princeton University, and the Massachusetts Institute of Technology, as well as at various mathematical institutes in Europe and South America. After her initial appointment in 1965, in 1974 Keen was promoted to Full Professor at Lehman College and the CUNY Graduate Center. She is currently Executive Officer of the Mathematics Program at the Graduate Center.

Keen served as president of the Association for Women in Mathematics during 1985-1986 and as vice-president of the American Mathematical Society during 1992-1995. She served on the Board of Trustees of the American Mathematical Society from 1999-2009 and as Associate Treasurer from 2009-2011. Keen worked with the mathematicians Paul Blanchard, Robert L. Devaney, Jane Gilman, Lisa Goldberg, Nikola Lakic and Caroline Series among many others.

In 1975, Keen presented an AMS invited address and in 1989 she presented an MAA joint invited address. In 1993 she was selected as a Noether Lecturer by the Association for Women in Mathematics.[3]

In addition to studying Riemann surfaces, Keen has worked in hyperbolic geometry, Kleinian groups and Fuchsian groups, complex analysis, and hyperbolic dynamics. In the field of hyperbolic geometry, she is known for the Collar lemma.

She is married to Jonathan Brezin and resides in New York.

She has been honored with:

In 2012 she became a fellow of the American Mathematical Society.[4]

In 2017, she was selected as a fellow of the Association for Women in Mathematics in the inaugural class.[5]

Complex Dynamics with Robert L. Devaney
Hyperbolic Geometry from a Local Viewpoint with Nikola Lakic
The Legacy of Sonya Kovalevskaya}; Proceedings of a Symposium held at Radcliffe College and 3 AMS special sessions. Ed. L. Keen, Contemp. Math. 64, AMS 1987.
Lipa's Legacy, Proceedings of the Bers Colloquium}, Ed. J. Dodziuk, L. Keen, Contemp. Math. 211, AMS 1997
Complex Dynamics: 25 years after the appearance of the Mandelbrot set, Eds. R. Devaney, L. Keen, Contemp. Math., 396, Amer. Math. Soc., Providence, RI, 2006.
Lipman Bers, a Life in Mathematics, Eds. I. Kra, R. Rodriguez, L. Keen, Amer. Math. Soc., Providence, RI, 2015.

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Presidents of the Association for Women in Mathematics
1971–1990	Mary W. Gray (1971–1973) Alice T. Schafer (1973–1975) Lenore Blum (1975–1979) Judith Roitman (1979–1981) Bhama Srinivasan (1981–1983) Linda Preiss Rothschild (1983–1985) Linda Keen (1985-1987) Rhonda Hughes (1987-1989) Jill P. Mesirov (1989-1991)
1991–2010	Carol S. Wood (1991-1993) Cora Sadosky (1993-1995) Chuu-Lian Terng (1995-1997) Sylvia M. Wiegand (1997-1999) Jean E. Taylor (1999-2001) Suzanne Lenhart (2001-2003) Carolyn S. Gordon (2003-2005) Barbara Keyfitz (2005-2007) Cathy Kessel (2007-2009) Georgia Benkart (2009-2011)
2011–0000	Jill Pipher (2011-2013) Ruth Charney (2013-2015) Kristin Lauter (2015-2017) Ami Radunskaya (2017-2019) Ruth Haas (2019-2021) Kathryn Leonard (2021-2023)