Talks & Posters

• Upcoming
  • DIMACS Workshop on Polynomial Optimization, Rutgers University, May 2020, (invited talk), postponed.
  • Symposium Diskrete Mathematik, Magdeburg, Germany, July 2021, (invited talk)
  • Summer School Random and Deterministic Point Configurations, Santander, Spain, Summer 2021 (invited talk)
• Kissing number in non-Euclidean space
  • ETH Zürich, April 22, 2020 (seminar talk)
• Semidefinite programming bounds for the average kissing number
  • Point Distribution Webinar, June 17th, 2020 (invited talk) Video
  • University of Cologne, April 15th, 2020 (seminar talk)
• Exact semidefinite programming bounds for packing problems
  • Universit‌é de Bordeaux, November 19th, 2019 (seminar talk)
  • University of Cologne, June 18th, 2019 (seminar talk)
  • Applied CATS seminar, KTH June 18th, 2019 (seminar talk)
• Kissing number of the hemisphere in dimension 8
  • A^{^}3 — Arctic Applied Algebra, April 5th, 2019, Tromsø (talk)
  • SIAM Conference Applied Algebraic Geometry, Bern, July 11th, 2019 (invited talk)
• Introduction to Semidefinite Optimization
  • Universit‌é de Neuchâtel, November 12th & 13th, 2018 (seminar talks)
  • Workshop Discrete geometry and automorphic forms, AIM, San Jose CA, September 18th, 2018 (invited talk)
• Packings of Superballs
  • Universit‌é de Neuchâtel, November 13th, 2018 (colloquium talk)
  • Workshop Computational Challenges in the Theory of Lattices, ICERM, Brown, Providence RI, April 25th, 2018 (invited conference talk) Video
• Geometric Packings of Non-Spherical Shapes
  • University of Konstanz, January 19th, 2018 (seminar talk)

• New bounds for the density of geometric packings
  • Seminar Algebraic Geometry and Number Theory, EPFL, Lausanne, October 19th, 2017 (seminar talk)
  • ABC Seminar, Cologne, June, 2017 (talk)

• New upper bounds for the density of translative packings of three-dimensional convex bodies with tetrahedral symmetry
  • Summer School on Real Algebraic Geometry and Optimization, Georgia Tech, July, 2016 (talk)
  • SIGOPT 2016, Trier, April, 2015 (talk)

• New upper bounds for the density of translative packings of superspheres
  • Oberwolfach workshop: Lattices and Applications in Number Theory, January 22nd, 2016 (talk)
  • CWI, Amsterdam, November 4th, 2015 (seminar talk)
  • FRICO 2015, Cologne, August 14th, 2015 (talk)

• SOS polynomials invariant under finite reflection groups
  • 3rd ERC Workshop FU Berlin, March 22th, 2015 (poster presentation)
  • University of Cologne, January 28th, 2015 (seminar talk)