2013-07-01 to present | Department Chair (Mathematics)

1992-07-01 to present | Professor (Mathematics)

1988-07-01 to present | Secondary Appointment (Computer and Information Science)

2014-12-01 to 2016-11-30 | Leading Research Fellow (Faculty of Computer Science)

1988-07-01 to 1992-06-30 | Associate Professor (Mathematics)

1982-07-01 to 1988-06-30 | Assistant Professor (Mathematics)

1981-09-01 to 1982-06-30 | T.H.Hildebrandt Research Assistant Professor (Mathematics)

1979-09-01 to 1981-08-31 | Ph.D. (Mathematics)

1977-09-01 to 1979-08-31 | M.A. (Mathematics)

1974-09-01 to 1977-07-07 | B.Sc. (Mathematics)