Plateau Saclay Combinatorics Seminar

LIX

The Plateau Saclay Combinatorics Seminar is held every other Monday afternoon at 3PM in room Philippe Flajolet (top floor on the left) at LIX. It is co-organized by the Combi team of LIX and the GALaC team.

The mailing list for this seminar is combi_lix_lri@services.cnrs.fr. Subscribe to this list by sending an email to sympa@services.cnrs.fr with object "subscribe combi_lix_lri@services.cnrs.fr Firstname Lastname", if you want to receive weekly announcements.

If you are interested in giving a talk, feel free to contact the organizers:

The seminar archives (2006 -- 2017) can be found on the old page.

Recent and up-coming seminars

Séminaire ouvert

-- Toute l'équipe (LIX, GALAC)

Lors d'un séminaire ouvert, le thème n'est pas décidé à l'avance. Tous les membres du séminaires sont invités à participer et peuvent proposer le jour même des interventions plus ou moins longues, des démos ou des questions ouvertes au reste de l'équipe.


A realization of poset associahedra as sections of graph associahedra

-- Chiara Mantovani (LIX)

Poset associahedra are a family of convex polytopes introduced by Pavel Galashin in 2021, each one associated to a partially ordered set, that generalize the classical associahedron. Galashin describes the combinatorial structure of poset associahedra, and he realizes them as convex polytopes. However, his construction is not completely satisfactory. In ...

(q,t)-symmetry in triangular partitions

-- Loïc Le Mogne (LISN, Galac)

We study the \((q,t)\) enumeration of the Triangular Dyck paths, i.e. the sub-partitions of the so-called triangular partitions discussed by Bergeron and Mazin. This is a generalization of the general \((q,t)\) enumeration of Catalan objects. We present new combinatorial notions such as the triangular tableau and the ...

Intervalles linéaires dans les treillis de Dyck, Tamari et alt-Tamari.

-- Clément Cheneviere (Unistra)

Les treillis de Dyck et de Tamari sont des ordre partiels classiques sur les objets Catalan, et on peut notamment les définir sur les chemins de Dyck. Ces deux posets ne possèdent pas le même nombre d'intervalles, mais de façon surprenante, lorsque l'on ne regarde que leurs intervalles ...

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Translations: fr