• 2018-02-20

    Femmes en mathématiques au LaCIM

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    Pavillon Président-Kennedy, UQAM

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    ARTA III : Avancées en théorie des représentations des algèbres (2014)

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    Mathématiques à Marseille avec Mark Haiman, Cédrik et François Bergeron

  • RS, Adriano Garsia
La Jolla, CA

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    Maths à la plage, Richard Stanley et Adriano Garsia (2003)

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    Mathématiques au bar à Banff avec Adriano Garsia et Nantel Bergeron

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    Mathématiques à la montagne avec Francois et Nantel Bergeron, Jennifer Morse et Adriano Garsia

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

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    Gilbert Labelle et Christophe Reutenauer

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

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    Bienvenue au LaCIM!

Bienvenu au LaCIM

Le LaCIM (Laboratoire de Combinatoire et d’Informatique Mathématique)est un centre de recherche regroupant chercheurs, stagiaires et étudiants autour de thèmes relevant des mathématiques discrètes et

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Séminaires

The Coxeter transformation on cominuscule posetsFriday, 23 February 2018, 13:30

Emine Yıldırım (UQAM)

Let $P$ be a cominuscule poset. Let $J(P)$ be the poset of order ideals of $P$, and $D^b(J(P))$ be the bounded derived category of the incidence algebra of $J(P)$. The Auslander-Reiten translation on the bounded derived category $D^b(J(P))$ naturally defines an endomorphism on the Grothendieck group of the incidence algebra of $J(P)$ which is called Coxeter transformation. We show that Coxeter transformation has finite order for two of the three infinite families of cominuscule posets, and for the exceptional cases. Our motivation comes from a conjecture by Chapoton which states that $D^b(J(R))$ is fractionally Calabi-Yau, which means some non-zero power of the Auslander-Reiten translation equals some power of the shift functor, when R is the poset of positive roots of a finite root system. Our result can be thought of as a parabolic analogue of Chapoton's conjecture.

Pas de séminaire Friday, 02 March 2018, 13:30

semaine de relâche

TBAFriday, 09 March 2018, 13:30

Arthur Nunge (Université Paris-Est Marne-la-Vallée)

Abstract: TBA

On the computation of fusion over the affine Temperley-Lieb algebraFriday, 16 March 2018, 13:30

Yvan Saint-Aubin (Université de Montréal)

Abstract: Fusion product originates in the algebraisation of the operator product expansion in conformal field theory. Read and Saleur (2007) introduced an analogue of fusion for modules over associative algebras, for example those appearing in the description of 2d lattice models. The present work aims at extending their definition for modules over the affine Temperley-Lieb algebra. Work joint with Jonathan Belletête.

TBAThursday, 29 March 2018, 11:00

Brendon Rhoades (UCSD)

TBAFriday, 06 April 2018, 13:30

Vladimir Retakh (Rutgers University)

Abstract: TBA

TBAFriday, 13 April 2018, 13:30

Vida Djumovic (University of Ottawa)

Abstract: TBA

TBAFriday, 20 April 2018, 13:30

Eric Rowland (Hofstra University)

Abstract: TBA

Titre à venirFriday, 27 April 2018, 13:30

Manon Stipulanti (Université de Liège)

TBAFriday, 25 May 2018, 13:30

Jon Fickenscher (Princeton University)

Abstract: TBA