He has published over 80 mathematics articles in academic journals. He was President of the International Linear Algebra Society[4] (2002-2008[5]), and was previously a Professor of Mathematics at the University of Wisconsin–Madison.[1][3] In 1982 he was awarded the Landau Research Prize in Mathematics; in 1990, the New England Academic Award for Excellence in Research; in 1990, the Technion’s Award for Excellence in Teaching; and in 1991, the Henri Gutwirth Award for Promotion of Research.[1]