## Monday, May 29, 2017

 09:30 - 10:00 Registration and Coffee & Croissants

 Session - School: Algebraic and Geometric Combinatorics of Reflection Groups Meeting room(s) : UQAM, Pav. Président-Kennedy, PK-R250

 10:00 - 12:00 Christophe Hohlweg (UQÀM) Introduction to Coxeter Groups & Reflection Groups - Part I
 12:00 - 14:00 Lunch break
 14:00 - 16:00 Matthew J. Dyer (University of Notre Dame) Introduction to Coxeter Groups & Reflection Groups - Part II
 16:00 - 18:00 Nicolas M. Thiéry (Université Paris-Sud) Exercise and computational sessions

 16:00 Coffee

## Tuesday, May 30, 2017

 09:30 - 10:00 Coffee & Croissants

 Meeting room(s) : UQAM, Pav. Président-Kennedy, PK-R250

 10:00 - 12:00 Piotr Przytycki (McGill University) The isomorphism problem for Coxeter groups - Part I
 12:00 - 14:00 Lunch break
 14:00 - 16:00 Cédric Bonnafé (Université Montpellier 2) Representations of rational Cherednik algebras at $t=0$ - Part I
 16:00 - 18:00 Nicolas M. Thiéry (Université Paris-Sud) Exercise and computational sessions

 16:00 Coffee

## Wednesday, May 31, 2017

 09:30 - 10:00 Coffee & Croissants

 Meeting room(s) : UQAM, Pav. Président-Kennedy, PK-R250

 10:00 - 12:00 Piotr Przytycki (McGill University) The isomorphism problem for Coxeter groups - Part II
 12:00 - 14:00 Lunch break
 14:00 - 16:00 Cédric Bonnafé (Université Montpellier 2) Representations of rational Cherednik algebras at $t=0$ - Part II
 16:00 - 18:00 Nicolas M. Thiéry (Université Paris-Sud) Exercise and computational sessions

 16:00 Coffee

## Thursday, June 1, 2017

 09:30 - 10:00 Coffee & Croissants

 Meeting room(s) : UQAM, Pav. Président-Kennedy, PK-R250

 10:00 - 12:00 Vic Reiner (University of Minnesota) Reflection group invariant theory and generating functionology - Part I
 12:00 - 14:00 Lunch break
 14:00 - 16:00 Nathan Reading (North Carolina State University) Lattice congruences of the weak order - Part I
 16:00 - 18:00 Nicolas M. Thiéry (Université Paris-Sud) Exercise and computational sessions

 16:00 Coffee

## Friday, June 2, 2017

 09:30 - 10:00 Coffee & Croissants

 Meeting room(s) : UQAM, Pav. Président-Kennedy, PK-R250

 10:00 - 12:00 Vic Reiner (University of Minnesota) Reflection group invariant theory and generating functionology - Part II
 12:00 - 14:00 Lunch break
 14:00 - 16:00 Nathan Reading (North Carolina State University) Lattice congruences of the weak order - Part II
 16:00 - 18:00 Nicolas M. Thiéry (Université Paris-Sud) Exercise and computational sessions

 16:00 Coffee

## Monday, June 5, 2017

 09:30 - 10:00 Registration and Coffee & Croissants

 Session - Workshop: Algebraic and Geometric Combinatorics of Reflection Groups Meeting room(s) : UdeM, Pav. Claire-McNicoll, Z-220

 10:00 - 11:00 Nathan Reading (North Carolina State University) Lattice homomorphisms between weak orders and between Cambrian lattices
 11:00 - 12:00 Salvatore Stella (Università degli studi di Roma "La Sapienza") Polytopal Realizations of Finite Type $\mathbf{g}$-Vector Fans
 12:00 - 15:30 Lunch break
 15:30 - 16:00 Coffee
 16:00 - 17:00 Cesar Ceballos (Universität Wien) Combinatorics and Geometry of $v$-Tamari lattices
 17:00 - 18:00 Karola Mészáros (Cornell University) From Generalized Permutahedra to Grothendieck Polynomials via Flow Polytopes

## Tuesday, June 6, 2017

 09:30 - 10:00 Coffee & Croissants

 Meeting room(s) : UdeM, Pav. Claire-McNicoll, Z-220

 10:00 - 11:00 Patricia Hersh (North Carolina State University ) Shelling Bruhat Order and the Proof of a Conjecture of Thomas Lam
 11:00 - 12:00 Vivien Ripoll (Universität Wien) Some Geometric Properties of Limit Roots of Coxeter Groups
 12:00 - 15:30 Lunch break
 15:30 - 16:00 Coffee
 16:00 - 17:00 Maria Chlouveraki (UVSQ / Université Paris-Saclay) Combinatorics of Multipartitions and Families of Characters
 17:00 - 18:00 Yuya Mizuno (Shizuoka University) A Connection Between the Module Category over a Path Algebra and the Coxeter Group

## Wednesday, June 7, 2017

 09:30 - 10:00 Coffee & Croissants

 Meeting room(s) : UdeM, Pav. Claire-McNicoll, Z-220

 10:00 - 11:00 Patrick Dehornoy (Université de Caen) Multifraction Reduction in Artin-Tits Groups
 11:00 - 12:00 Jon McCammond (UC Santa Barbara) The Intrinsic Geometry of the Dual Braid Complex
 12:00 - 15:30 Lunch break
 15:30 - 16:00 Coffee
 16:00 - 17:00 Christian Stump (Otto-von-Guericke-Universität Magdeburg) From Shi Arrangements to Reflection Multi-Arrangements
 17:00 - 18:00 Kasia Jankiewicz (McGill University) Graph coloring problem and fibering right angled Coxeter groups

## Thursday, June 8, 2017

 09:30 - 10:00 Coffee & Croissants

 Meeting room(s) : UdeM, Pav. Claire-McNicoll, Z-220

 10:00 - 11:00 Piotr Przytycki (McGill University) A Step Towards Twist Conjecture
 11:00 - 12:00 Timothée Marquis (UCL) Conjugacy Classes in Coxeter Groups
 12:00 - 15:30 Lunch break
 15:30 - 16:00 Coffee
 16:00 - 17:00 Anna Felikson (Durham University) Hyperbolic Coxeter Polytopes
 17:00 - 18:00 Jacek Swiatkowski (Wroclaw University) Coxeter groups with the $n$-dimensional Sierpinski compacta as boundaries

## Friday, June 9, 2017

 09:30 - 10:00 Coffee & Croissants

 Meeting room(s) : UdeM, Pav. Claire-McNicoll, Z-220

 10:00 - 11:00 Sara Billey (University of Washington) Reduced Words and a Formula of Macdonald
 11:00 - 12:00 Vic Reiner (University of Minnesota) Invariant Derivations and Differential Forms for Reflection Groups
 12:00 - 13:30 Lunch break
 13:30 - 14:00 Coffee
 14:00 - 15:00 Martina Lanini (Università degli Studi di Roma “Tor Vergata”) Combinatorial Fock Space and Representations of Quantum Groups at Roots of Unity
 15:00 - 16:00 Jean Michel (Université Denis Diderot - Paris 7) Cyclotomic Root Systems