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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 a 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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    Welcome to LaCIM!

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    Gilbert Labelle and Christophe Reutenauer

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    Welcome to LaCIM!

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    Welcome to LaCIM!

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    Welcome to LaCIM!

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    Welcome to LaCIM!

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    Welcome to LaCIM!

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

R-systemsFriday, 24 November 2017, 13:30

Pavel Galashin (MIT)

Abstract: Birational toggling on Gelfand-Tsetlin patterns appeared first in the study of geometric crystals and geometric Robinson-Schensted-Knuth correspondence. Based on these birational toggle relations, Einstein and Propp introduced a discrete dynamical system called birational rowmotion associated with a partially ordered set. We generalize birational rowmotion to the class of arbitrary strongly connected directed graphs, calling the resulting discrete dynamical system the R-system. We study its integrability from the points of view of singularity confinement and algebraic entropy. We show that in many cases, singularity confinement in an R-system reduces to the Laurent phenomenon either in a cluster algebra, or in a Laurent phenomenon algebra, or beyond both of those generalities, giving rise to many new sequences with the Laurent property possessing rich groups of symmetries. Some special cases of R-systems reduce to Somos and Gale-Robinson sequences. This is joint work with Pavlo Pylyavskyy.

TBAFriday, 22 December 2017, 13:30

Frédéric Patras (Université de Nice Sophia-Antipolis)

Abstract: TBA

TBAFriday, 12 January 2018, 13:30

Narad Rampersad (University of Winnipeg)

Abstract: TBA

TBAFriday, 19 January 2018, 13:30

Dun Qiu (UCSD)

Abstract: TBA