M. (Rien) A. Kaashoek

Professor (emeritus) Analysis and Operator Theory

Postal address:

Department of Mathematics, FEW
VU University
De Boelelaan 1081A
1081 HV Amsterdam

The Netherlands


Email address: m.a.kaashoek(at)few.vu.nl
Room: S 2.62
Telephone: +31 20 5987836
Secretary: +31 20 5987700
Fax: +31 20 5987653

Research interests

Analysis and Operator Theory, and various connections between Operator Theory, Matrix Theory and Mathematical Systems Theory. In particular, Wiener-Hopf integral equations and Toeplitz operators, their nonstationary variants, and other structured operators, such as continuous operator analogs of Bezout and resultant matrices. State space methods for problems in analysis. Also metric constrained interpolation problems and completion problems for partially given operators, including relaxed commutant lifting problems.


·         books

·         papers published before 2016

·         new and to appear


Events -- Department of Mathematics VU

IWOTA: International Workshop on Operator Theory and its Applications

Operator Theory: Advances and Applications

Integral Equations and Operator Theory (IEOT)

Indagationes Mathematicae

Mathematische Nachrichten