• 2018-02-20

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

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    Pavillon President-Kennedy, UQAM

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

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    Mathematics in Marseille with Mark Haiman, Cédrik and François Bergeron

  • RS, Adriano Garsia
La Jolla, CA

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

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

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

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    Christophe Reutenauer and Toni Machi, Bibbiena 2008

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

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    Members of the LACIM in the early 90

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    Denis Thérien, Marcel-Paul Schützenberger, Oberwolfach 1986

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    Thesis defense by Jérôme Fortier

  • slide13

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

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    Christian Stump, Nicolas Thiéry, Franco Saliola, Florent Hivert

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    Richard Stanley at the LACIM seminar

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    Sage days at LACIM

  • slide18

    Symposium on Coxeter groups

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

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    Sage days

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    LaCIM seminar

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    La choucroute du patron

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    La choucroute du patron


Cluster structures on Grassmannians and SL_k friezesFriday, 26 October 2018, 13:30

Eleonore Faber (Leeds)

An SL_k-frieze is a grid of positive integers where the determinant of any k by k diamond equals 1. Consider Grassmannian cluster categories C(k,n), i.e., cluster structures associated to the Grassmannian of k-dimensional subspaces in n space. We will explain, how to obtain SL_k-friezes using Pluecker coordinates by taking certain extension-closed subcategories of C(k,n). We also discuss relationships between SL_k-friezes and mesh friezes of the corresponding cluster category C, that is, friezes that arise from a collection of positive integers on the AR-quiver of C such that all mesh relations evaluate to 1. This is joint work with Karin Baur, Sira Gratz, Khrystyna Serhiyenko, and Gordana Todorov.

Thing 1 and Thing 2Friday, 16 November 2018, 13:30

Barry Monson (UNB)

TBAFriday, 30 November 2018, 13:30

Krishanu Roy (The Institute of Mathematical Sciences, India)

Abstract: TBA