- International symposium on Mathematical Programming, July 1–6, 2018, Bordeaux
- From the Fundamental Lemma to Discrete Geometry, to Formal Verification, June 18–22, 2018, University of Pittsburgh

- MIT Combinatorics Seminar, 13 October 2017, Cambridge

Blackboard talk: Applications of noncommutative polynomial optimization - Hierarchies, Extended Formulations and Matrix-Analytic Techniques, November 6–9, 2017, Simons Institute, Berkeley
- Seminar Mathematical Optimization and Quantum Information Theory, August 7–9, 2017, Bad Honnef

Blackboard talk: Bounds on quantum entanglement dimensions - DIAMANT Symposium, June 1, 2, 2017, Breukelen

Slides: Using (noncommutative) polynomial optimization to bound matrix factorization ranks - SIAM Conference on Optimization, May 22–25, 2017, Vancouver

Slides: Using noncommutative polynomial optimization for matrix factorization ranks - 53rd National Mathematical Congress, April 11, 12, 2017, Utrecht
- Real algebraic geometry with a view toward moment problems and optimization, March 5–11, 2017, MFO, Oberwolfach

Slides: High precision computations for energy minimization - Aussois Combinatorial Optimization Workshop, January 9–13, 2017, CNRS, Aussois

Slides: Using polynomial optimization to bound matrix factorization ranks

- Symposium Quantum Software in the Netherlands, November 25, 2016, CWI, Amsterdam
- 5th SDP Day: Applications of Semidefinite Optimization, June 30, 2016, CWI, Amsterdam
- Heilbronn and QALGO quantum algorithms meeting, April 14–16, 2016, Cambridge
- Moment problems in theoretical physics, April 7–9, 2016, Konstanz

Slides: Moment methods in energy minimization - Thesis defense, January 29, 2016, Delft

Slides: Layman's talk: Moment methods in extremal geometry

- CWI Lectures on Quantum Computing, December 3, 2015, Amsterdam
- Zero-error information, Operators, and Graphs, November 25–27, 2015, Barcelona
- Intuitive Geometry, László Fejes Tóth Centennial, June 22–28, 2015, Budapest

Slides: Moment methods in energy minimization - Dutch Mathematical Congress, April 14–15, 2015, Leiden

Slides: Moment methods in extremal geometry - Combinatorial and algorithmic aspects of convexity, January 19–23, 2015, Institut Henri Poincaré, Paris

- Minimal energy pointsets, lattices, and designs, October 12 – November 1, 2014, Erwin Schrödinger Institute, Vienna

Slides: Energy minimization via moment hierarchies - Utrecht Combinatorics Workshop, November 7, 2014, Utrecht
- IFORS, July 13–18, 2014, Barcelona

Slides: Energy minimization via conic programming hierarchies - Recent methods in sphere packing and optimization, June 8–14, 2014, MFO, Oberwolfach

Blackboard talk: Energy minimization via conic programming hierarchies - SIAM conference on optimization, May 19–22, 2014, San Diego

Slides: Energy minimization via conic programming hierarchies - Research visit at Microsoft Research New England (Host: Henry Cohn), May 5–16, 2014, Cambridge, MA
- Dutch Mathematical Congress, April 16–17, 2014, Delft
- Applications of Real Algebraic Geometry, February 27 – March 2, 2014, Aalto University, Helsinki

Slides: A semidefinite programming hierarchy for packing problems in discrete geometry

- GeoLMI 2013, Conference on Geometry and Algebra of Linear Matrix Inequalities, November 12–16, 2013, CIRM, Marseille
- ERC Worksop, Delaunay Geometry: Polytopes, Triangulations, and Spheres, October 7–9, 2013, FU Berlin
- Polynomial Optimisation, July 15–19, 2013, Newton Institute, Cambridge

Slides: A semidefinite programming hierarchy for geometric packing problems

Video: Newton Institute Seminar - 4th SDP days, March 21–22, 2013, CWI, Amsterdam

Slides: A semidefinite programming hierarchy for geometric packing problems

- DIAMANT Symposium, November 29, 30, 2012, Doorn

Slides: A semidefinite programming hierarchy for geometric packing problems - WONDER minicourse on Random Optimization Problems, November 6–9, 2012, Eindhoven
- MFO Workshop, Optimal and near optimal configurations on lattices and manifolds, August 19–25, 2012, Oberwolfach

Slides: Polydisperse spherical cap packings - HPOPT, 12th International Workshop on High Performance Optimization, June 20–22, 2012, Delft
- Dutch Mathematical Conference, April 12, 2012, Eindhoven
- Emerging Developments in Real Algebraic Geometry, February 20–24, 2012, Magdeburg

Slides: Upper bounds for multiple-size spherical cap packings - 37th conference on The Mathematics of Operations Research, January 17, 19, 2012, Lunteren

- ERC Workshop, High-Complexity Discrete Geometry, October 24–27, 2011, FU Berlin