Mary Beth Ruskai

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Mary Beth Ruskai (born February 26, 1944 in Cleveland (Ohio) ) is an American mathematical physicist.

Ruskai studied chemistry at Notre Dame College in Cleveland with a bachelor's degree in 1965 and received his doctorate in physical chemistry with John Edward Harriman in 1969 at the University of Wisconsin-Madison ( The N-Representability Problem ). In the same year, she obtained a master's degree in mathematics there. As a post-doctoral student , she was a Battelle Fellow at the University of Geneva from 1969 to 1971 . From 1973 to 1976 she was an assistant professor in the mathematics department of the University of Oregon . From 1977 she taught at the University of Massachusetts on its campus in Lowell (then still University of Lowell), from 1982 as an associate professor and from 1986 as a professor. In 2002 she retired there and was a research professor at Tufts University from 2003 to 2013 , where she is at the Institute for Quantum Computing.

She was visiting scholar at MIT, Bell Laboratories (consultant), Rockefeller University, Courant Institute in New York, Georgia Tech, Dublin Institute of Technology, University of Alberta, Bunting Institute, TU Vienna, University of Oregon , at the Fields Institute, in Leiden, at IHES and the Institute for Quantum Computing in Waterloo (Ontario, Canada). In 1995 she was visiting professor at Case Western Reserve University in Cleveland. She was also at the Perimeter Institute and Isaac Newton Institute.

In 1981 she proved (as well as independently Israel Michael Sigal ) that there is a maximum number of electrons that a nucleus can bind to itself. This is also known as the Ruskai and Sigal theorem. In 1972 she and Elliott Lieb proved the strong subadditivity for quantum entropy (the theorem is important in quantum information theory ). Later she dealt with quantum information theory and organized various conferences (such as in 2010 at the Mittag-Leffler Institute ).

She is a Fellow of the American Mathematical Society (2013) and the American Association for the Advancement of Science .

Her hobbies include mountain hiking and cross-country skiing .

Web links

Individual evidence

  1. ↑ Birth and career data according to American Men and Women of Science , Thomson Gale 2004
  2. ↑ Mary Beth Ruskai in the Mathematics Genealogy Project (English)Template: MathGenealogyProject / Maintenance / id used
  3. ↑ Ruskai, Comm. Math. Phys., Vol. 82, 1982, p. 457, Vol. 85, 1982, p. 325
  4. ↑ Cycon, Froese, Kirsch, Simon, Schrödinger Operators, Springer 1987, p. 32f
  5. ↑ Lieb, Ruskai, Proof of the strong subadditivity of quantum mechanical entropy, J. Math. Phys., Volume 14, 1973, pp. 1938-1941
  6. ↑ Vershynina, Carlen, Lieb, Strong Subadditivity of Quantum Entropy, Scholarpedia
personal data
SURNAME Ruskai, Mary Beth
BRIEF DESCRIPTION American mathematical physicist
DATE OF BIRTH February 26, 1944
PLACE OF BIRTH Cleveland (Ohio)