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In the summer of 2008 Bob Jantzen updated the Maple worksheets of "Discovering Mathematics with Maple" to Maple 12. See the homepage of the book.
I retired from my position at Erasmus University on March 1, 2005. For recent papers see under Publications/Papers.
Information on education, past and present affiliations and awards and honours.
My main research interest is in Computational Mathematics. During much of my professional life I have been active in the area of Mathematics where Algebraic Number Theory, Algebraic Geometry and Computational Mathematics meet. I am particularly interested in the arithmetic of elliptic curves, and in diophantine equations, with an emphasis on computational aspects.
Membership of Scientific Societies and Research
Apart from being fascinated by mathematics in the broadest sense, and by computational matters in particular, I greatly enjoy classical music, English literature, long distance walking, and looking after and playing with my grandchildren Mandy, Ruben, Verren and Rick. Soon after retiring from Erasmus University I took up the study of stringed instrument making at CMB (Center for musical instrument making). Here is a photograph of me holding my viola da gamba which I hope to complete soon.