**2018
**

January: Seminar EPFL, Lausanne

February-May: ICERM semester program „Point configurations in geometry, physics, and computer science“, Brown, Providence RI

April 3-4: Nederlands Mathematisch Congress, Koningshof in Veldhoven

April 5: 6th SDP day, CWI Amsterdam

April 9-13: Organization (with A. Schürmann, S. Torquato, R. Womersly) of Workshop „Computation and Optimization of Energy, Packing, and Covering“, ICERM, Brown, Providence RI

June 18-22: Conference in honor of Thomas C. Hales: „From the Fundamental Lemma to Discrete Geometry, To Formal Verification“, University of Pittsburgh

July 1-6: ISMP 2018, Bordeaux

September 24-28: Workshop „Discrete geometry and automorphic forms“, American Institute of Mathematics

August: Discrete Phase Space Methods for Quantum Fault-Tolerance, DPG Physics Centre, Bad Honnef

September: SFB Retreat

December 3: Colloquium „Research Training Network Algorithmic Optimization“, Trier

**2019**

April: Oberwolfach workshop: Mixed-Integer Nonlinear Optimization

July: SIAM Conference Applied Algebraic Geometry, Bern

**2017**

April: Oberwolfach workshop: Discrete Geometry

September: SFB Retreat

September 25-27: Workshop on Geometric Curvature Functionals and Discretizations, Kloster Steinfeld

November 28: Séminaire de Théorie Algorithmique des Nombres, Bordeaux

December 7-9: 5. Alpen-Adria Workshop on Optimization Klagenfurt

**2016**

January 4-April 22: Hausdorff Trimester Program, Mathematics of Signal Processing, Bonn

February: Kolloquium Universität Duisburg-Essen

**2015**

January 22: Kolloquium Bielefeld

May: Combinatorics Colloquium, London

May: Combinatorics Seminar, Warwick

June: Kolloquium Konstanz

June: Operations Research Seminar, Tilburg

July: Frankfurt-Darmstadt Afternoon on Discrete Mathematics, Frankfurt

July: BMS Summer school „Convex geometry: discrete and computational“, Berlin

July: ISMP, Pittsburgh

September: Geometry and Physics of Spatial Random Systems, Karlsruhe

October: Organization (with B. Peis, H. Röglin, O. Schaudt) of workshop: Efficient algorithms in game theory, optimization and data science, Aachen-Bonn-Cologne

October: Oberwolfach workshop: Mixed-Integer Nonlinear Optimization

October: Conference „Convexity, Probability and Discrete Structures, a Geometric Viewpoint“, Paris

**2014**

February 10-14: Workshop: Semidefinite programming and graph algorithms, ICERM, Brown University http://icerm.brown.edu/sp-s14-w1

February 27-March 2: Workshop: Applications of Real algebraic geometry, Helsinki

April 6-12: Oberwolfach workshop: Real algebraic geometry with a view towards systems control and free positivity

June 2-6: Topical Workshop: Computational Nonlinear Algebra, ICERM, Brown University

June 8-14: Oberwolfach seminar: Recent Methods in Sphere Packing and Optimization

July 10: Kolloquium, Trier

August 31-September 6: Oberwolfach workshop: Discrete geometry

September 22-September 26: Semidefinite Optimization, Approximation, and Applications, Simons Institute for the Theory of Computing, Berkeley

September 29-November 22: ESI Programme „Minimal energy point sets, lattices, and designs“

**2013**

May 13-15: Cardiff

June 4: Colloquium Toulouse

July 27-August 1: ICCOPT, Lisbon

September 16: Seminar: Max Planck Institut, Bonn

October 7-9: Second ERC Workshop: Delaunay Geometry, Triangulations and Spheres, FU Berlin

October 28: Colloquium, Hagen

November 12-15: CIRM, Luminy