- May 2020: DIMACS Workshop on Polynomial Optimization Rutgers University, New Jersey
- June 2020: FoCM 2020 Foundations of Computational Mathematics, Vancouver, Canada
- June 2020: GO 60 Pure & Applied Algebraic Goemetry celebrating Giorgio Ottaviani's 60th birthday, Levico Terme, Italy
- July 2020: Sums of Squares Method in Geometry, Combinatorics and Optimization, Summer Graduate School at MSRI, Berkeley
- December 2020: International Conference on Number Theory and Discrete Mathematics (ICNTDM)-2020 (Organised by Ramanujan Mathematical Society, India) Rajagiri School of Engineering and Technology, Cochin , India.

- January 2019: AMS Short Course on "Sums of Squares:Theory and Applications", Baltimore, Maryland
- February 2019: Optimization, Algebra, Geometry & Statistics: Serkan Hosten's Mathematics @ 50, San Francisco
- April 2019: Physics \cap ML, Microsoft Research, Redmond, Washington
- April 2019: Optimization Methods in Computer Vision and Image Processing, ICERM, Providence, Rhode Island
- May 2019: The 7th Canadian Discrete and Algorithmic Mathematics Conference (CanaDAM 2019), Vancouver, Canada
- May 2019: Geometry of Real Polynomials, Convexity and Optimization, Banff, Canada
- June 2019: Applied Algebra at Brauschweig, Braunschweig, Germany
- June 2019: Discrete Geomtery Seminar, TU Berlin, Germany
- July 2019: Graduiertenkolleg "Facets of Complexity" Colloquium Free University Berlin, Germany
- July 2019: SIAM Conference on Applied Algebraic Geometry, Bern, Switzerland

- June 2018: ECCO 18 Baranquilla, Colombia
- July 2018: SIAM Annual Meeting , Portland, Oregon, from SIAM News, Talk video
- August 2018: ICM 2018 , Rio de Janeiro, Brazil
- Fall 2018:
ICERM Semester Program on Nonlinear Algebra , Brown University,
Rhode Island
- October 2018: Real algebraic geometry and optimization

- November 2018: PGMO Days 2018, Paris

- May 2017: SIAM Conference on Optimization , Vancouver, Canada
- July 2017: FoCM 2017, Barcelona, Spain
- July-August 2017: SIAM Conference on Applied Algebraic Geometry, Georgia Institute of Technology, Atlanta, Minisymposia
- August 2017: Workshop on Proof Complexity and Beyond, Oberwolfach, Germany.
- Autumn 2017: Geometric and Topological Combinatorics, MSRI, Berkeley, talk video
- Autumn 2017: Bridging Continuous and Discrete Optimization, Simons Institute for the Theory of Computing, Berkeley

- January 2016: Nonlinear Algebra, Joint Math Meetings, Seattle
- February 2016: Workshop on Positive Semidefinite Rank, Institute for Mathematical Sciences, NUS, Singapore
- February 2016: Winter 2016 Golden MAA Section Meeting, UC Davis
- March 2016: Colloquium, Operations Research and Financial Engineering, Princeton University
- May 2016: AIM workshop on Algebraic Vision, San Jose, California
- June 2016: Colloquium at MSRI-UP, Berkeley, California
- August 2016: Discrete Optimization, ETH Zurich
- September 2016: Summer School, University of Coimbra, Coimbra, Portugal

- January 2015: AMS Special Session on Algebraic and Geometric Methods in Applied Discrete Mathematics, JMM, San Antonio
- February 2015: Limitations of convex programming: lower bounds on extended formulations and factorization ranks, Dagstuhl, Germany
- February 2015: AIME@CZ - Czech workshop on applied mathematics in engineering, Prague
- March 2015: Talk in the PolSys seminar, LIP6, Universite Pierre et Marie Curie (Paris 6)
- May 2015: GOAL workshop, UC Berkeley
- August 2015: SIAM Conference on Algebraic Geometry, Daejeon, Korea
- September 2015: Center for Applied Mathematics Colloquium, Cornell University, Ithaca, talk video
- October 2015: Algebraic Vision, Berlin, Germany
- October 2015: WAGS 2015, University of Washington, Seattle

- April 2014: Operations Research Seminar, Tepper School of Business, Carnegie Mellon University
- May 2014: SIAM Conference on Optimization, San Diego, talk video
- May 2014: ACMS seminar, University of Washington
- June 2014: ICERM workshop on Computational Nonlinear Algebra
- September 2014: Fifth Cargese workshop on combinatorial optimization, Cargese, Corsica
- September 2014: Simons Institute workshop on Semidefinite Optimization, Approximation and Applications, Berkeley
- October 2014: Triangle Lectures in Combinatorics, High Point University, North Carolina
- November 2014: Oberwolfach workshop on Combinatorial Optimization

- January 2013: SIAM Minisymposium at the Joint Math Meetings, San Diego
- January 2013: Applied Mathematics Colloquium, Caltech
- January 2013: Nebraska Conference for Undergraduate Women in Mathematics
- February 2013: Communication Complexity, Linear Optimization, and lower bounds for the nonnegative rank of matrices, Dagstuhl Seminar
- June 2013: MEGA 2013: Effective Methods in Algebraic Geometry, Frankfurt
- July-August 2013: Polynomial Optimization, Newton Institute, Cambridge, UK
- July 2013: International Conference on Continuous Optimization (ICCOPT 2013), Lisbon, Portugal
- November 2013: GeoLMI Conference, CIRM (Centre International de Rencontres Mathematiques), Luminy, France
- December 2013: OPLOG Seminar, Sauder School of Business, University of British Columbia, Vancouver.

- January 2012: Joint Math Meetings, Boston
- March 2012: Reed College
- Math Colloquium
- Talk for the Division of Mathematics and Natural Sciences

- March 2012: Bernd Math Day
- April 2012: Workshop: Questions in geometry arising in the sciences, Texas A&M University
- June 2012: 2012 IMA PI Summer Program for Graduate Students, Algebraic Geometry for Applications
- June-July 2012: SIMUW 2012
- August 2012: International Symposium on Mathematical Programming, Berlin
- October 2012: Math Colloquium, Georgia Institute of Technology
- October 2012: 12th European Conference on Computer Vision, Florence

- February 2011: Workshop on "Solving polynomial equations", KTH, Stockholm (part of the semester on "Algebraic Geometry with a view towards applications", Mittag-Leffler, Stockholm)
- March 2011: AMS Special Session and Workshop, Iowa City
- October 2011:

- February 2010: Banff worksho p on Convex Algebraic Geometry
- March 2010: A Tutorial Workshop: Linear Matrix Inequalities and Polynomial Optimization (LMIPO), UCSD
- May 2010: West Coast Optimization Meeting: In Memory of Paul Tseng
- June 2010: HPOPT 2010 - 11th International Workshop on High Performance Optimization Techniques, Tilburg University, The Netherlands
- July 2010: The Mathematics of Klee & Grunbaum: 100 Years in Seattle
- Fall 2010: Modern Trends in Optimization and Its Appli cation, IPAM, Los Angeles
- October 2010: Workshop in Honor of Bill Helton, UCSD
- December 2010: Canadian Math Society, Winter Meeting, UBC, C anada

- January 2009: Connections for Women: Algebraic Geometry and Related Fields
- March 2009: DIAMANT seminar day at CWI, Amsterdam : Applications of semidefinite programming
- April 2009: AIM Workshop: Combinatorial Challenges in Toric Geometry
- May 2009: Integer Programming at CORE
- June 2009: Abel Symposium 2009: Combinatorial aspects of commutativ e algebra and algebraic geometry
- August 2009: 20th International Symposium on Math Programming
- September 2009: AIM meeting on Convex algebraic geometry, optimization and applications
- Fall 2009:

- May 2008: SIAM Conference on Optimization
- June 2008: Foundations of Computational Mathematics
- August 2008:
- October 2008: