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Personal profile


Research on linear algebra, operator theory and systems and control theory.

Several current project are concerned with linear algebra in spaces with an indefinite inner product.


Teaching: Mathematical control and systems theory, linear algebra, and although it is not my expertise, I am teaching an Introduction to Financial Mathematics course.

Ancillary activities

  • Stichting Advancement of Mathematics | Amstelveen | Bestuurder | 1996-02-19 - present
  • North-West University | Potchefstroom | buitengewoon hoogleraar | 2011-04-01 - present
  • Stichting Epsilon | Amsterdam | Bestuurder | 2018-05-01 - present

Ancillary activities are updated daily

Expertise related to UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):

  • SDG 7 - Affordable and Clean Energy
  • SDG 16 - Peace, Justice and Strong Institutions

Academic qualification

Mathematics, PhD, Semidefinite invariant subspaces, stability and applications, Vrije Universiteit Amsterdam

Award Date: 29 Jun 1984

Mathematics, Master, Spectral factorization of weakly hyperbolic operator polynomials, Vrije Universiteit Amsterdam

Award Date: 25 Apr 1979

Mathematics, Bachelor, Vrije Universiteit Amsterdam

Award Date: 26 Oct 1976


  • QA Mathematics
  • Linear Algebra
  • Operator Theory
  • Linear Systems Theory


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Collaborations and top research areas from the last five years

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