Conferences

• MEGA 2019 Madrid (June 17-21, 2019).
• MEGA 2017 Nice (France), 16-19 June 2017 (program committee, organization committee).
• MEGA 2015 Trento (Italy), 15-19 June 2015 (program committee).
• SNC (Symbolic-Numeric Computation), program committee, Shanghai (China), 28-31 July 2014
• Minisymposium Algebraic Geometry, Moment Problems and Applications at SIAM Conference on Applied Algebraic Geometry, Fort Collins, Colorado (USA), 1st-4th August 2013.
• MEGA 2013, Frankfurt (Germany), 3-7th June 2013 (program chair).
• SNC (Symbolic-Numeric Computation), program committee, San Jose (USA),
• MEGA 2011, Stockholm (Sweden), 30 May-2June 2011.
• GMP (Geometric Modeling and Processing), Castro Urdiales (Spain), 16-18 June 2010 (program chair).
• Shapes, algebra, geometry and algorithm (SAGA) winter school. Co-organized with Laurent Busé and Angelos Mantzaflaris. Auron, France, March 15-19, 2010.
• SNC (Symbolic-Numeric Computation), Kyoto (Japan), 3-5 August 2009 (program committee).
• ISSAC, Waterloo (Canada), 29 July-1 August, 2007 (program chair).
• SNC (Symbolic-Numeric Computation), London (Canada), 25-27 July 2007, (program committee).
• Algebraic Geometry and Geometric Modeling’06. Co-organized with Laurent Busé, Carlos D’Andrea, Ron Goldman, Laureano Gonzalez-Vega and Martin Sombra. University of Barcelona September 4-7, 2006.</span
• Computational Algebraic Geometry and Applications, on the occasion of the 60th birthday of André Galligo. Co-organized with Laurent Busé and Mohamed Elkadi. University of Nice, June 2-6, 2006.
• SNC (Symbolic-Numeric Computation), program committee, Xi'an (China), 19-21 July 2005.  
• Journées Nationales de Calcul Formel,  coorganized with J.A. Weil, Luminy, Octobre 1998.
• SNAP (Symbolic Numeric Algebra for Polynomials), coorganized with Victor Pan and Ioannis Emiris, Sophia Antipolis (France), 1996. 
• Algebraic and Analytic theory of residues and its applications, coorganised with Marc Chardin and Mohamed Elkadi. IHP, Paris, 1995.