Tim de Laat

PhD student at the Department of Mathematical Sciences of the University of Copenhagen.
Member of the Non-Commutative Geometry group and the Centre for Symmetry and Deformation.

Advisors: Magdalena Musat and Uffe Haagerup.

Contact information
Department of Mathematical Sciences, Office 04.1.06
Universitetsparken 5
2100 København Ø
Denmark
Phone: +45 35320726
Email: tlaat_nospam_@math.ku.dk, omit "_nospam_".

Research

My research is mainly concerned with approximation properties of operator algebras, operator spaces and groups. In particular, I am interested in completely bounded Fourier multipliers on Lie groups and applications to approximation properties for the group von Neumann algebra and the reduced group C*-algebra associated to discrete subgroups of the given Lie group. I am also interested in some problems related to Grothendieck inequalities in the noncommutative setting.

Papers and theses

• Simple Lie groups without the Approximation Property (with Uffe Haagerup), preprint.
• On the Regularization of the Kepler Problem (with Gert Heckman), to appear in J. Symplectic Geom., preprint.
• Regularization and Quantization of the Kepler Problem, Master thesis in Mathematics, supervisor: Gert Heckman.
• Synthetic Differential Geometry: an Application to Einstein's Equivalence Principle, Bachelor thesis in Mathematics and Physics & Astronomy, supervisor: Klaas Landsman.

Talks

• Operator Algebra and Dynamics, network conference, May 15-20, 2012, Gjargardur, Faroe Islands.
• Workshop Connes' Embedding Conjecture, April 23-27, 2012, Neuchatel, Switzerland.
• Seminar Operator Algebras, April 20, 2012, Katholieke Universiteit Leuven, Belgium.
• Norwegian-Danish Symposium on Operator Algebras, December 6, 2011, Lysebu, Norway.
• Operator Algebra Seminar, November 9, 2011, University of Copenhagen, Denmark.
• Seminar Mathematical Physics, October 4, 2011, Radboud University Nijmegen, The Netherlands.
• NordForsk Network Junior Workshop: Operator algebras and dynamical systems, September 15, 2011, University of Copenhagen, Denmark.

Teaching

• 2010-2011, Block 1: Optimization and Convexity (OK).
• 2010-2011, Block 3: Advanced Complex Analysis (KomAn2).
• 2011-2012, Block 3: Special Functions (SpecFunk).
• 2011-2012, Block 4: Von Neumann Algebras (v.N.Alg).