A. Alekseev, B. Enriquez, H. Furusho and S. Merkulov are organizing the workshop "GRT, MZVs and associators" on August 20-29 in Les Diablerets. The purpose of this workshop is to bring together the leading experts in the field of multiple zeta-values, associators and the Grothendieck-Teichmueller group as well as a number of young researchers. Its aim is to advance on several important problems: the relation between the Kashiwara-Vergne (KV) and GRT Lie algebras, the topological interpretation of the divergence cocycle, the theory of elliptic MZVs.

The workshop is co-sponsored by the NCCR SwissMAP, the grant "Algebra, Analysis, Geometry and Physics " of the Swiss National Science Foundation (SNSF) and the project MODFLAT of the European Research Council (ERC).

**Program: **

**Friday, August 21**

9:30 - 11:30 Nariya Kawazumi, Algebraic aspects of the Goldman-Turaev Lie bialgebra

17:00-19:00 Yusuke Kuno, Symplectic expansions and mapping class groups

**Saturday, August 22**

9:30 - 11:30 Gwenael Massuyeau, The LMO functor: from associators to cobordisms and tangles

17:00-19:00 Pierre Lochak, Topological Grothendieck-Teichmüller theory

**Sunday, August 23**

9:30 - 11:30 Benoit Fresse, Rational homotopy and intrinsic formality of En-operads

17:00-19:00 Benjamin Enriquez, Elliptic associators

**Monday, August 24**

9:30 - 11:30 Leila Schneps, Elliptic double shuffle and Ecalle’s moulds

17:00-19:00 Pavol Severa, Quantization of Lie bialgebras and moduli of flat connections

**Tuesday, August 25**

9:30 - 11:30 Hiroaki Nakamura, Eisenstein invariant for once punctured elliptic curves

17:00 - 19:00 Dror Bar-Natan, Lie bi-algebras and a polynomial time knot polynomial

**Wednesday, August 26**

9:30 - 11:00 Zsuzsanna Dancso, A topological proof of the Kashiwara-Vergne conjecture

afternoon free

**Thursday, August 27**

9:30 - 11:30 Sergei Merkulov, An explicit formula for deformation quantization of Lie bialgebras

17:00-19:00 Joham Alm, The KZ associator and a universal A-infinity structure on Batalin-Vilkvisky algebras

**Friday, August 28**

9:30 - 11:30 Thomas Willwacher, Graph cohomology

17:00-19:00 Anton Khoroshkin, Group actions, framed little balls operads and graph complexes

**Saturday, August 29**

9:30 - 11:30 Hidekazu Furusho, Desingularization of multiple zeta functions

Departure