Second conference on Geometric Science of Information,
October 28-30 2015.
Conference on Explicit methods in Number Theory, July 6-10, 2015, Oberwolfach (Germany).
Conference Curve 2015, June 22-26 2015, Paris Jussieu.
Programm "Amplitudes, Motives and Beyond", May 26-June 12 2015, Mainz Institute for Theoretical Physics.
Number theory seminar Cologne, April 27 2015.
MPI Bonn, Manin's Seminar on Algebra, Geometry and Physics, March 10 2015.
Workshop on "Regulators, Mahler measures, and special values of L-functions", February 16-20 2015, Montreal.
Research stay at the MPI Bonn, January-September 2015.
Workshop on "Multiple Zeta Values, Modular Forms and Elliptic Motives II", December 2014, ICMAT Madrid.
Workshop on "Cohomological Realizations of Motives", 7-12 December 2014, Banff International Research Station.
Université de Fribourg (Colloquium)
Groups in Galway (Workshop), May 2014.
Fall semester on "Physics and Mathematics of Scattering Amplitudes", August - December 2013, Simons Center, New York
Autumn school on "Multiple Zeta Values, Multiple Polylogarithms and Quantum Field Theory", October 7-11, 2013, ICMAT Madrid
Clay Mathematics Institute Workshop on "Number Theory and Physics", September 30 - October 4, 2013, Oxford
Exploratory workshop on "New Approaches To Multiple Zeta Values", September 30 - October 2, 2013, ICMAT Madrid
AIM SQuaRES Workshop on "Explicit Computations with Reduction Theories III", September 16-20, 2013, American Institute for Mathematics, Palo Alto
Conference on The Mathematical Legacy of Jean-Louis Loday, September 4-6, 2013, Strasbourg
Conference on Explicit methods in Number Theory, July 14-20, 2013, Oberwolfach (Germany)
LMS Symposium on "Polylogarithms as a Bridge between Number Theory and Particle Physics", July 3-12, 2013, Durham
Conference on
Recent advances in Hodge theory: Period domains, algebraic cycles, and arithmetic, June 10-20, 2013, at the UBC, Vancouver
Workshop on Amplitudes 2013, April 28 - May 3, 2013, at Ringberg Castle (Tegernsee)
Special semester on Grothendieck-Teichmüller Groups, Deformation and Operads, Jan 3- April 26 2013, at the Newton Institute in Cambridge
Workshop on Amplitudes and Periods, December 3-7 2012, at the IHES in Paris
Heilbronn Workshop on String Theory and Arithmetic Geometry, September 3-7 2012, at the Heilbronn Institute in Bristol
Workshop Periods and Motives July 2-5 2012, at the ICMAT in Madrid
Special session of the Seminaire Mediterraneen d'Algebre et Topologie (in honour of J.-L. Cathelineau) on
Polylogarithms in Algebra and Topology, June 14-16 2012, in Nice
Conference on Arakelov Geometry and K-theory, May 21-23 2012, in Toulouse
AIM SQuaRES Workshop on "Explicit Computations with Reduction Theories II", American Institute for Mathematics, Palo Alto, February 2012
Workshop "Theorie des nombres et applications", January 16-20 2012, at the CIRM in Luminy
Workshop on (Polylogarithmic) Webs, the so-called Journees Textiles, November 22-25 2011, in Rennes
North British Mathematical Physics Seminar, October 29, 2011, in Durham
Explicit Methods in Number Theory, Oberwolfach July 17-23, 2011
Arbeitstagung Bonn 2011 (June 24-30), Bonn
Conference May 2-6 2011 in Bristol (with a poster), organised jointly with Richard Hain, sponsored by the Heilbronn Institute, on "Multiple zeta values, modular forms, and elliptic motives"
AIM SQuaRES Workshop on "Explicit Computations with Reduction Theories I", American Institute for Mathematics, Palo Alto, February 2011
Workshop on ``Numbers, Periods and Quantum Field Theory'' , 15-17 April 2010 (Durham)
Special Event: Jan 8.-10., 2008, "Hopf algebras and periods in QFT"
Special Event: Dec 12, 2007, "Feynman Graphs and Periods Day"
Special Event: Dec 5, 2007, "Multiple Polylogarithms and Moduli Spaces Day"
Special Semester on "Periods in Geometry, Arithmetic and Physics"