Degrees:
Brandeis University, B.A.,M.A., 1972
Princeton University, Ph.D., 1977
Employment:
University of California, Berkeley, Lecturer, 1977-79
Yale University, Assistant Professor, 1979-84
Ohio State University,
Associate Professor, 1984-1990
Professor, 1990-2003
Brandeis University, Professor 2003-present
Visiting Positions:
Institute des Hautes Etudes Scientifiques, France 1982-83
Institute for Advanced Study, Princeton 1986-87, 1992-93
Boston College, 1994-95
Mathematical Institute, Oxford University, 2001
Fields of Interest: Geometric Group Theory, Topology
PhD Students:
Barry Spieler, Nonpositively curved orbihedra, 1992.
Joseph Altobelli, The word problem for some Artin groups of infinite type, 1996.
Chi-Kun Wong, Spherical projections and CAT(1) spaces, 1996.
Robert Bell, Three-dimensional FC Artin groups are CAT(0), 2003.
Ophir Feldman, Actions of Finite Type Artin Groups on R-Trees, 2005.