2002

Feb 12 CFT domain walls and holography, Rutgers University.
Feb 28 Minicourse Topological Strings, School of Mathematics, Institute for Advanced Study, Princeton.
Mar 5 CFT domain walls and holography, University of Pennsylvania.
Mar 7 Minicourse Topological Strings, School of Mathematics, Institute for Advanced Study, Princeton.
Mar 8 CFT domain walls and holography, School of Natural Sciences, Institute for Advanced Study, Princeton.
Mar 12 CFT domain walls and holography, Mathematical Physics Seminar, Boston University.
Mar 14 Minicourse Topological Strings, School of Mathematics, Institute for Advanced Study, Princeton.
Mar 25-Apr 19 Topological string theory, 4 lectures at the Clay Mathematics Institute School on Geometry and M-Theory, Cambridge University.
Mar 28 Snarentheorie, Flogiston, VPRO television.
Apr 12 String theory and quantum gravity, 2002 Physica Lecture, Nederlandse Natuurkundige Vereniging, Groningen.
Apr 18 The unreasonable effectiveness of mathematics, presentatie Strategienota Wiskunde OWW, NWO , Den Haag
May 13 Knots, strings, and branes, Witthaker Lecture, University of Edinburgh.
May 14 Snaren, zwarte gaten en extra dimensies, Viva Fysica, Universiteit van Amsterdam.
May 20 M-Theory and complex geometry, Institute Seminar, Isaac Newton Institute for Mathematical Sciences, Cambridge University.
May 27-29 Topological String Theory, MRI Spring School "Frobenius Manifolds in Mathematical Physics", Universiteit Twente
May 30 seminar, Institut Henri Poincaré, Paris.
Jun 4 The unreasonable effectiveness of physics in mathematics, colloquium, Physic Department, Universität Mainz.
Jun 15 Snaren, zwarte gaten en extra dimensies, Universiteitsdag, Universiteit van Amsterdam.
Jun 24-29 Topological string theory, 3 lectures at Topology, Geometry, and Quantum Field Theory, Oxford University.
Jul 15-20 Topological string, matrix models, and supersymmetric gauge theories, lecture at Strings 2002, Cambridge University.
Jul 25 Supersymmetric gauge theories and matrix models, Amsterdam Summer Workshop on String Theory, Universiteit van Amsterdam.
Sep 4 A pertubative window on non-perturbative physics, theory colloquium, CERN, Geneva.
Sep 9 String theory, colloquium, AMOLF, Amsterdam.
Sep 12 Matrix models and geometry, SIGRA meeting, Frascati, Rome.
Sep 23 Supersymmetric gauge theories and matrix models, 2 lectures at Institut Henri Poincaré, Paris.
Sep 30 Topological String Theory, Floer Memorial Lecture, Mathematics Department, Stanford.
Oct 1 Supersymmetric gauge theories and matrix models, UC Berkeley.
Oct 3 Supersymmetric gauge theories and matrix models, Institute for Theoretical Physics, Stanford.
Oct 9 String theory, black holes and extra dimensions, colloquium, Physics Deparment, Universität Heidelberg.
Oct 31 Supersymmetric gauge theories and matrix models, 2 lectures at ULB, Brussels.
Nov 8 Borcherds products in string theory, intercity seminar "Automorphic forms which admit infinite products expansions," UvA.
Nov 26 String theory and quantum gravity,  bijeenkomst FOM programmaleiders, Utrecht.
Nov 28-29
Supersymmetric gauge theories and matrix models, 3 lectures at Nordic Network Meeting on Fields, Strings, and Branes, Niels Bohr Institute, Copenhagen.
Dec 12 Matrix models and Calabi-Yau geometry, Mathematics Department, Harvard.
Dec 16 Physics and Geometry, colloquium, Physics Department, Harvard.

2003

Jan 9-11 Supersymmetric gauge theories and matrix models, 3 lectures at RTN School on Strings, Supergravity and Gauge Theory, Torino.
Feb 12 Supersymmetric gauge theories, Institute of Physics, London.
Feb 17 Snaartheorie, Rotterdams Natuurkundig Genootschap
Feb 26 Matrix models and Calabi-Yau geometry, KdV Institute for Mathematics, University of Amsterdam.
Mar 10-21 String dualities and automorphic forms, 3 lectures at winter school "Number Theory, Physics and Geometry," Les Houches, France.
Mar 28 Geometry and matrix models, 2 lectures at workshop New Developments in Mirror Symmetry, Max-Planck-Institute
for Mathematics in the Sciences, Leipzig.
Apr 1-5 Supersymmetric gauge theories and matrix models, 4 lectures at "Spring School on Superstring and Related Topics," ICTP, Trieste.
Apr 15 The unreasonable effectiveness of physics in mathematics, 12th Johann Bernoulli Lecture, Rijksuniversiteit Groningen.
Apr 16 String theory for engineers, Universiteit Twente.
Apr 17 Stringtheorie, studentenseminarium, Universiteit van Amsterdam.
Apr 23 Supersymmetric gauge theories and matrix models, Lake Arrowhead CFT meeting, UCLA.
Apr 25 Supersymmetric gauge theories and matrix models, Caltech.
May 2 Flatland revisited -- the mathematics and physics of extra dimensions, slotvoordracht Nederlands Wiskundig Congres, Nijmegen.
May 9 Supersymmetric gauge theories and matrix models, Landelijk Seminarium, NIKHEF, Amsterdam.
May 20 Supersymmetric gauge theories and matrix models, seminar, ETH, Zürich.
May 21 Supersymmetric gauge theories and matrix models, joint physics colloquium, Universität Zürich.
Jun 2-13 Geometry and matrix models, 4 lectures at School on Mathematics in String and Field Theory, ICTP, Trieste
Jun 5 Kan de wereld gevangen worden in een formule? Ministerie OC&W, Zoetermeer.
Jun 11 Snaartheorie, Studium Generale, Technische Universiteit Eindhoven.
Jun 21 Snaren, zwarte gaten en de big bang, Universiteitsdag, Universiteit van Amsterdam.
Jul 4 Matrix models and Calabi-Yau geometry, Mathematics Department, Stanford University.
Jul 6-11 Strings 2003, Kyoto.
Jul 14-Aug 8 Geometry, Topology and Strings, 4 lectures at Kavli Institute for Theoretical Physics, Santa Barbara.
Aug 26-27 Matrix Models and Supersymmetric Gauge Theories, Institut d'été ENS, Paris.
Aug 31-Sep 3 The Unity of Mathematics, Harvard.
Sep 3 -Sep 7 International School of Subnuclear Physics, Erice, Sicily
Sep 8 Snaartheorie, Studium Generale TU Delft
Sep 21 Tot hoever kun je tellen? Nemo kinderlezing
Oct 1 Hoe Wiskunde Werkt, Open UvA College met Johan van Benthem
Oct 8 Hoe Wiskunde Werkt, Open UvA College met Johan van Benthem
Oct 22 Hoe Wiskunde Werkt, Open UvA College met Johan van Benthem
Oct 29 Hoe Wiskunde Werkt, Open UvA College met Johan van Benthem
Nov 5 Hoe Wiskunde Werkt, Open UvA College met Johan van Benthem
Nov 12 Hoe Wiskunde Werkt, Open UvA College met Johan van Benthem
Nov 19 Hoe Wiskunde Werkt, Open UvA College met Johan van Benthem
Nov 21-22 Current Developments in Mathematics, Harvard.
Nov 26 Hoe Wiskunde Werkt, Open UvA College met Johan van Benthem
Dec 1-20 String theory school, Sao Paolo.

2004

Feb 2 Einsteins droom en de wiskundige werkelijkheid, Natuur- en Letterkundig Genootschap Physica, Alkmaar.