# Grothendieck-Teichmüller Groups, Deformation and Operads

Created: | 2013-01-15 15:41 |
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Institution: | Isaac Newton Institute for Mathematical Sciences |

Description: | Grothendieck-Teichmüller theory goes back to A. Grothendieck's celebrated Esquisse d'un programme. In 1991, V. Drinfel'd formally introduced two Grothendieck-Teichmüller groups, the former one related to the absolute Galois group and the latter one related to the deformation theory of a certain algebraic structure (braided quasi-Hopf algebra). Introduced in algebraic topology 40 years ago, the notion of operad has enjoyed a renaissance in the 90's under the work of M. Kontsevich in deformation theory. Two proofs of the deformation quantization of Poisson manifolds, one by himself as well as one by D. Tamarkin, led M. Kontsevich to conjecture an action of a Grothendieck-Teichmüller group on such deformation quantizations, thereby drawing a precise relationship between the two themes.
Read more at: http://www.newton.ac.uk/programmes/GDO/ |

# Media items

This collection contains 108 media items.

### Media items

#### (Co)homology theories and deformation theory

Vallette, B (Université de Nice Sophia Antipolis)

Wednesday 30 January 2013, 14:00-15:30

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Mon 4 Feb 2013

#### A brief introduction to the etale fundamental group and to the Galois action

Lochak, P; Schneps, L (Institut de Mathématiques de Jussieu)

Wednesday 06 February 2013, 10:30-12:00

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Fri 15 Feb 2013

#### A Dold-Kan-type correspondence for superalgebras of differentiable functions and a "differential graded" approach to...

Roytenberg, D (Universiteit Utrecht)

Tuesday 02 April 2013, 15:00-16:00

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Mon 8 Apr 2013

#### A line in the plane and the Grothendieck-Teichmueller group

Merkulov, S (Stockholm University)

Thursday 10 January 2013, 15:30-16:30

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Tue 15 Jan 2013

#### A lower bound of a sub-quotient of the Lie algebra associated to Grothendieck-Teichmüller group

Enriquez, B (University of Strasbourg)

Thursday 18 April 2013, 16:00-18:00

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Mon 13 May 2013

#### A shuffle product formula for generalized iterated integrals

Joyner, S (Brandeis University)

Tuesday 09 April 2013, 15:00-16:00

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Wed 10 Apr 2013

#### Anatomy of the motivic Lie algebra

Brown, F (IHES)

Thursday 11 April 2013, 09:30-10:30

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Fri 12 Apr 2013

#### Arithmetic and topological problems in universal monodromy representation of Galois-Teichmueller groups

Nakamura, H (Okayama University)

Wednesday 09 January 2013, 11:30-12:30

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Wed 16 Jan 2013

#### Associators and representations of braids

Marin, I (Université d'Amiens)

Monday 08 April 2013, 16:30-17:30

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Wed 10 Apr 2013

#### Bott periodicity in Algebra

Segal, G (University of Oxford)

Wednesday 03 April 2013, 13:30-14:30

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Mon 8 Apr 2013

#### Braids and the Grothendieck-Teichmuller Group

Bar-Natan, D (University of Toronto)

Wednesday 09 January 2013, 10:00-11:00

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Wed 16 Jan 2013

#### Brown-Zagier relation for associators: I

Terasoma, T (University of Tokyo)

Thursday 14 March 2013, 14:00-15:00

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Mon 18 Mar 2013

#### Brown-Zagier relation for associators: II

Terasoma, T (University of Tokyo)

Thursday 14 March 2013, 15:00-16:00

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Mon 18 Mar 2013

#### Classical and quantum Lagrangian field theories on manifolds with boundaries

Cattaneo, A (Universität Zürich)

Wednesday 03 April 2013, 09:30-10:30

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Mon 8 Apr 2013

#### Cohomology of braid groups and mapping class groups I

Randal-Williams , O (University of Cambridge)

Thursday 28 February 2013, 14:00-16:00

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Wed 6 Mar 2013

#### Cohomology of braid groups and mapping class groups II

Randal-Williams , O (University of Cambridge)

Thursday 28 February 2013, 16:30-17:00

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Wed 6 Mar 2013

#### Computability and Zipf's Law: operadic perspective

Manin, YI (Max-Planck-Institut fur Mathematik, Bonn)

Thursday 04 April 2013, 13:30-14:30

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Tue 9 Apr 2013

#### Cyclotomic p-adic multi-zeta values

Ünver, S (Koç University)

Tuesday 09 April 2013, 13:30-14:30

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Wed 10 Apr 2013

#### Deformation theory

Jones, J (University of Warwick)

Tuesday 08 January 2013, 10:00-11:00

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Wed 16 Jan 2013

#### Deformations of the En-operad

Willwacher, T (Harvard University)

Friday 05 April 2013, 11:00-12:00

**Collection**:
Grothendieck-Teichmüller Groups, Deformation and Operads

**Institution**:
Isaac Newton Institute for Mathematical Sciences

**Created**:
Tue 9 Apr 2013