Gerrit van Dijk (mathematician)

Van Dijk studied mathematics at Utrecht University, where he received his PhD in 1969 with thesis advisor T. A. Springer.{{MathGenealogyProject|id=49665|name=Gerrit van Dijk}} As a postdoc, van Dijk worked for the academic year 1969–1970 in Princeton, New Jersey at the Institute for Advanced Study.{{cite web|title=Gerrit van Dijk|website=Institute for Advanced Study (ias.edu)|date=9 December 2019 |url=https://www.ias.edu/scholars/gerrit-van-dijk}} There he was inspired by Harish-Chandra to study harmonic analysis with the representation theory of Lie groups and prepared the notes for Harish-Chandra's 1969 monograph Harmonic analysis on reductive p-adic groups.{{cite book|author=Harish-Chandra|title=Harmonic analysis on reductive p-adic groups|year=1970|postscript=; iv+125 pages; notes by G. van Dijk|location=Berlin; New York|publisher=Springer-Verlag|lccn=79138810}} From 1970 to 1972 van Dijk was a staff member at Utrecht University. At Leiden University he was appointed lecturer in 1972 and was promoted to professor in 1980. From 1988 to 1992 he was Leiden University's dean of the faculty of mathematics and natural sciences. He was from 1995 to 1997 he was the director of Leiden University's Lorenz Center{{cite web|url=https://www.lorentzcenter.nl/history-in-brief.html |title=History in brief |website=Lorentz Center, Universiteit Leiden}} and from 1997 to 2004 the director of Leiden University's Mathematical Institute. From 2003 to 2004 he directed the Leiden Institute for Advanced Computer Science (LIACS). He was a professor at Leiden University until 2004, when he retired as professor emeritus.

Van Dijk was a visiting professor at various universities in several countries: Germany (Göttingen), France (Nancy), Japan (Fukuoka), Russia (Tambov), and Sweden (Stockholm). He was a member of the Royal Dutch Mathematical Society, the Batavian Society for Experimental Philosophy, and the Koninklijke Hollandsche Maatschappij der Wetenschappen. He supervised 14 doctoral dissertations (some of them with Tom Koornwinder). Van Dijk did research on Lie groups, p-adic representation theory, harmonic analysis, symmetric spaces, homogeneous spaces, Gelfand pairs, and Berezin transforms with generalizations.{{cite web|title=Gerrit van Dijk (1939-2022)|date=May 3, 2022|url=http://www.ams.org/news?news_id=7020 | website=News from the AMS, American Mathematical Society }} His collaborators include Vladimir Fedorovich Molchanov,{{cite journal|doi=10.1016/S0021-7824(99)80011-7|url=https://www.sciencedirect.com/science/article/pii/S0021782499800117 |title=Tensor products of maximal degenerate series representations of the group SL(n, R) |date=1999 |last1=Van Dijk |first1=G. |last2=Molchanov |first2=V.F. |journal=Journal de Mathématiques Pures et Appliquées |volume=78 |pages=99–119 |url-access=subscription }} Masato Wakayama, Tom Koornwinder, and Erik G. F. Thomas. Van Dijk's doctoral students include Gerrit Heckman and Eric Opdam (known for Heckman–Opdam polynomials).

Van Dijk did historical research on the life and work of the 19th-century Dutch mathematician Thomas Joannes Stieltjes, as well as other Leiden mathematics professors from the past. This research work resulted in a new issue of Stieltjes's collected works, a portrait gallery in Leiden University's Mathematical Institute, and publication of the book Leidse hoogleraren Wiskunde 1575-1975, which documents the lives of about forty Leiden mathematics professors.

Van Dijk was married and had three children.

• {{cite book|title=Spherical functions on the þ-adic group PGL|publisher=North-Holland Publishing Company (N.V. Noord-Hollandsche Uitgevers Maatschappij)|location=Amsterdam|year=1969|lccn=70458330}} (doctoral disseration; summary in Dutch)
• with Mannes Poel: {{cite book|title=The GL(2n-1,R)-spherical representations of SL(2n,R)|publisher=University of Groningen|location=Groningen|year=1988}}
• as editor with Lambertus A. Pelletier: {{cite book|title=Thomas Joannes Stieltjes jr., 1856-1894: eredoctor van de Leidse Universiteit|publisher=Universiteit Leiden|year=1989}}
• Oeuvres complètes = Collected papers / [par] Thomas Jan Stieltjes (reissue of the Oeuvres completes by Stieltjes (with a concise biography and commentaries by Gerrit van Dijk) published by Springer. Berlin/New York. 1993 {{LCCN|93009944}}
• {{cite book|url=https://www.researchgate.net/publication/28641665|title=Dat was afgesproken (That was agreed)|publisher=Universiteit Leiden|year=2004}} (emeritus farewell speech in Dutch)
• {{cite book|title=Geloof in de wiskunde: over de getallen van Fibonacci in kunst en literatuur, hun goddelijke status en een discussie over religie en wiskunde (Faith in mathematics: on the Fibonacci numbers in art and literature, their divine status, and a discussion on religion and mathematics)|publisher=Koninklijke Hollandsche Maatschappij der Wetenschappen (Royal Dutch Society of Mathematics)|location=Haarlem|year=2006}}
• {{cite book|url=https://books.google.com/books?id=IexDjWQz7oQC|title=Introduction to harmonic analysis and generalized Gelfand pairs|publisher=Walter de Gruyter|location=Berlin|year=2009|isbn=978-3-11-022019-3 }}{{cite web|author=Zaldivar, Felipe|date=June 5, 2010|url=https://maa.org/press/maa-reviews/introduction-to-harmonic-analysis-and-generalized-gelfand-pairs |title=Review of Introduction to Harmonic Analysis and Generalized Gelfand Pairs by Gerrit van Dijk|website=MAA Reviews, Mathematical Association of America }}
• as editor with Masato Wakayama: {{cite book|title=Casimir force, Casimir operators, and the Riemann hypothesis : mathematics for innovation in industry and science|location=Berlin; New York|publisher=De Gruyter|year=2010|lccn=2010031030|isbn=978-3110226126}}
• {{cite book|title=Leidse Hoogleraren Wiskunde 1575-1975|year=2011|publisher=Universiteit Leiden|url=https://www.universiteitleiden.nl/binaries/content/assets/science/mi/boek-leidse-wiskundigen-met-omslag_universiteit-leiden.pdf}} (in Dutch)
• {{cite book|url=https://books.google.com/books?id=JzFoHvXH_04C|title=Distribution theory: convolution, Fourier transform, and Laplace transform|location=Berlin|publisher=De Gruyter|year=2013|lccn=2012554713|isbn=978-3110295917}}{{cite web|author=Das, Tushar|date=February 22, 2014|title=Review of Distribution theory: convolution, Fourier transform, and Laplace transform by Gerrit van Dijk|website=MAA Reviews, Mathematical Association of America|url=https://maa.org/press/maa-reviews/distribution-theory-convolution-fourier-transform-and-laplace-transform}}

{{authority control}}

{{DEFAULTSORT:Dijk, Gerrit van}}

Category:1939 births

Category:2022 deaths

Category:Dutch mathematicians

Category:Institute for Advanced Study visiting scholars

Category:Utrecht University alumni

Category:Academic staff of Leiden University

Category:Officers of the Order of Orange-Nassau

Category:People from Kampen, Overijssel