Lectures

Excluding classes, I have given 41 lectures in 12 countries.

  • 20-12-18: Generating irreducible copositive matrices using the stable set problem, Optimization, Game Theory, and Data Analysis Workshop, Vienna, Austria.
  • 06-07-18: A New Certificate for Copositivity, 23rd International Symposium on Mathematical Programming, Bordeaux, France.
  • 25-05-18: Friendship Paradox, University Teaching Award presentation, University of Twente, The Netherlands.
  • 31-10-17: The structure of completely positive matrices according to their CP-rank and CP-plus-rank, "Copositivity and Complete Positivity" workshop, Oberwolfach Research Institute for Mathematics, Germany.
  • 20-07-17: Considering Copositivity Locally, IFORS, Quebec City, Canada.
  • 12-07-17: The structure of completely positive matrices according to their CP-rank and CP-plus-rank, 15th EUROPT Workshop, Montréal, Canada.
  • 20-07-16: Partitioning Simplices, MODU2016, Melbourne, Australia (see tweet from the talk).
  • 12-01-16: Exhaustive Simplicial Partitioning, Abacus Mathematisch Café, Twente, The Netherlands.
  • 17-07-15: Scaling relationship between the copositive cone and Parrilo's first level approximation, 22nd International Symposium on Mathematical Programming, Pittsburgh, U.S.A.
  • 09-07-15: Considering Copositivity Locally, 13th EUROPT Workshop, Edinburgh, Scotland.
  • 15-05-15: Scaling relationship between the copositive cone and Parrilo's first level approximation, 3rd Alpen-Adria Workshop on Optimization 2015, Klagenfurt, Austria.
  • 08-05-15: Considering Copositivity Locally, Mathematical Optimisation Symposium, Groningen, The Netherlands.
  • 19-03-15: Copositive and Completely Positive Optimisation, Tenure Trackers bijeenkomst Wiskundeclusters - NWO, The Hague, The Netherlands.
  • 09-01-15: Considering the stability number of a graph via copositive optimisation, 19th Combinatorial Optimization Workshop, Aussois, France.
  • 21-05-14: A Nonlinear Semidefinite Approximation for Copositive Optimisation, SIAM Conference on Optimization (OP14), San Diego, U.S.A.
  • 23-10-13: An Application and Approximation for Copositive Optimisation, Klagenfurt, Austria.
  • 30-09-13: Applications and Approximations for Copositive Optimisation, CWI, The Netherlands.
  • 31-07-13: On the set-copositive cone, Polynomial Optimisation Programme, Cambridge, U.K.
  • 24-07-13: On a set-semidefinite representation of quadratic optimisation problems, ERGO Seminar, Edinburgh, U.K.
  • 17-07-13: A new convex reformulation and approximation hierarchy for polynomial optimisation, Polynomial Optimisation Workshop, Cambridge, U.K.
  • 28-06-13: On a set-semidefinite representation of quadratic optimisation problems, 11th EUROPT Workshop, Florence, Italy.
  • 10-06-13: Applications and Approximations for Copositive Optimisation, ISOR Colloquium, Vienna, Austria.
  • 30-05-13 (Plenary speaker): Applications and Approximations for Copositive Optimisation, DIAMANT symposium, Heeze, The Netherlands.
  • 18-04-13: Applications and Approximations for Copositive Optimisation, Operations Research Seminar, Tilburg, The Netherlands.
  • 11-04-13: Applications and Approximations for Copositive Optimisation, Mathematical Optimisation Symposium, Groningen, The Netherlands.
  • 26-03-13: Applications and Approximations for Copositive Optimisation, Industrial Engineering seminar, Twente, The Netherlands.
  • 05-03-13: Applications and Approximations for Set-semidefinite Optimisation, Combinatorics and Optimization seminar, CWI, Amsterdam, The Netherlands.
  • 15-11-12: The Interior of the completely positive cone, 2012 Haifa Matrix Theory conference, Haifa, Israel.
  • 20-08-12: Considering the complexity of complete positivity using the ellipsoid method, 21st International Symposium on Mathematical Programming, Berlin, Germany.
  • 09-03-12: Copositive Programming, University of Iowa, U.S.A.
  • 02-03-12: Checking if a Sparse Matrix is Completely Positive, University of Waterloo, Canada.
  • 01-03-12: Copositive Programming, University of Waterloo, Canada.
  • 02-11-11: Copositive Programming, SIAM Student Chapter, Trier, Germany.
  • 18-10-11: Copositive Programming, Novo Mesto, Slovenia.
  • 07-10-11: Copositive Programming, WONDER graduate student seminar Utrecht, The Netherlands.
  • 30-06-11: Geometry of the Copositive and Completely Positive Cones, 3rd SDP day, CWI, Amsterdam, The Netherlands.
  • 29-06-11: An Improved Charactersation of the Interior of the Completely Positive Cone, PhD Colloquium, Groningen, The Netherlands.
  • 17-05-11: Checking if a Sparse Matrix is Completely Positive, SIAM Conference on Optimization, Darmstadt, Germany.
  • 13-05-11: Geometry of the Copositive and Completely Positive Cones, 2nd Alpen-Adria Workshop on Optimization 2011, Klagenfurt, Austria.
  • 10-12-10: Linear-time checking of sparse matrices for complete positivity, Intercity Number Theory Seminar, Groningen, The Netherlands.
  • 09-09-10: An Improved Charactersation of the Interior of the Completely Positive Cone, 8th EUROPT Workshop, "Advances in Continuous Optimization", Aveiro, Portugal.
  • 14-04-10: An Improved Charactersation of the Interior of the Completely Positive Cone, Groningen Optimization Seminar, Groningen, The Netherlands.