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Professional History

Michigan State University
  • Research Associate 1985-1987
  • Visiting Assistant Professor 1987-1988
Washington and Lee University
  • Assistant Professor 1987-1992
  • Associate Professor 1992-1997
  • Professor 1997-2003
  • Cincinnati Professor of Mathematics 2003-2012
  • Mathematics Department Head 2009-2011
UIBE (Beijing)
  • Summer-school faculty 2012, 2014
University of Tennessee Knoxville
  • Visiting Professor of Mathematics 2012-2013
University of Virginia
  • Visiting Professor of Mathematics 2013-2014
  • Lectuere, Director of Lower Division Courses 2015-2018
  • Professor, General Faculty, Director of Lower 2018-
    Division Courses
ECNU (Shanghai)
  • Summer-school faculty 2016