## OP-SF WEB

### Extract from OP-SF NET

Topic #2 ------------ OP-SF NET 16.5 ----------- September 15, 2009

From: Marcel de Bruin and Tom Koornwinder

Subject: Henk G. Meijer 1940-2009
Henk G. Meijer, professor emeritus at Delft University of Technology, passed away on 7
September 2009 at the age of 68. He is survived by his partner and a grown-up
daughter.

Henk Meijer obtained his PhD at the University of Amsterdam in 1967 with a thesis in
number theory (Uniform distribution of g-adic numbers); his advisor was Prof. Jan
Popken. In 1968 he became a lector at Delft University of Technology where he was
promoted to full professor (in Analysis) in 1973, keeping this position until his retirement
at the end of 2005. During his first decade in Delft he continued working in number
theory, publishing 21 papers with primary MSC classification 10 (Number Theory).

He spent much time on duties for the Department in various councils, several of which
he chaired. After a period (1978-1984) without publications, he turned his research
efforts to orthogonal polynomials and special functions. In particular he gave much
attention to Sobolev orthogonal polynomials, on which he also published jointly with
Francisco Marcellán and other Spanish mathematicians as well as with his Dutch
collaborators. MathSciNet lists 11 of Henk Meijer?s papers with primary MSC
classification 42C05 (Orthogonal Functions and Polynomials) and 7 papers with primary
classification 33 (Special Functions). His best-known paper is "Determination of all
coherent pairs", J. Approx. Theory 89 (1997), 321-343 (MR1451509).

At Delft University of Technology Henk Meijer headed a group on classical analysis
which included Herman Bavinck and Marcel de Bruin as senior members. Among his
PhD students were Roelof Koekoek and René Swarttouw.

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