• Stéphanie Schanck, Véronique Bazier-Matte, Nadia Lafrenière, Mélodie Lapointe, Pauline Hubert and Élise Vandomme participating in the movie “Faces of Women in Mathematics”

• Pavillon President-Kennedy, UQAM

• ARTA III : Advances in representation theory of algebras (2014)

• Mathematics in Marseille with Mark Haiman, Cédrik and François Bergeron

• Mathematics at the beach, Richard Stanley and Adriano Garsia (2003)

• Mathematics at the bar in Banff with Adriano Garsia and Nantel Bergeron

• Mountain mathematics with Francois and Nantel Bergeron, Jennifer Morse and Adriano Garsia

• Christophe Reutenauer and Toni Machi, Bibbiena 2008

• Xavier Viennot, Nantel Bergeron, Christophe Reutenauer, near Alghero 1988

• Members of the LACIM in the early 90

• Denis Thérien, Marcel-Paul Schützenberger, Oberwolfach 1986

• Thesis defense by Jérôme Fortier

• Gilbert Labelle and Christophe Reutenauer at Pierre Leroux’s house, Longueuil, early 2000

• Christian Stump, Nicolas Thiéry, Franco Saliola, Florent Hivert

• Richard Stanley at the LACIM seminar

• Sage days at LACIM

• Symposium on Coxeter groups

• Sébastien Labbé, Marco Robado, Srecko Brlek, Louis-François Préville-Ratelle, Alejandro Morales, Mathieu Guay-Paquet, Vivien Ripoll

• Sage days

• LaCIM seminar

• La choucroute du patron

• La choucroute du patron

# Women in mathematics in LaCIM

In occasion of the International Women’s Day 2018, the Committee for Women in Mathematics of the International Mathematical Union produced the film the Faces of

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# 2018 PhD LaCIM grant Pierre Leroux

This excellence scholarship is intended for a non-resident of Quebec who wishes to pursue doctoral studies in mathematics under the direction of a researcher who

# Welcome to LaCIM

The LaCIM  (Laboratoire de Combinatoire et d’Informatique Mathématique) is a research center gathering researchers, postdoctoral fellows, as well as graduate and undergraduate students interested in

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# Seminars

### The algebra and geometry of ordered set partitionsThursday, 29 March 2018, 11:00

For any positive integer $n$, there is a graded $S_n$-module (the coinvariant algebra $R_n$) and an algebraic variety (the flag variety $\mathcal{F \ell}(n)$) whose representation theoretic and geometric properties are governed by permutations in the symmetric group $S_n$. Given two positive integers $k \leq n$, we study a new graded $S_n$-module $R_{n,k}$ and a new variety $X_{n,k}$ whose properties are similarly governed by ordered partitions of the set $\{1, 2, \dots, n\}$ into $k$ blocks. Time permitting, we will discuss extensions of these constructions to other reflection groups as well as the Hecke algebra H_n(q) at generic parameter q and in the specialization q = 0. Joint with Jim Haglund, Jia Huang, Brendan Pawlowski, Travis Scrimshaw, and Mark Shimozono.

Abstract: TBA

Abstract: TBA

Abstract: TBA

Abstract: TBA