Plateau Saclay Combinatorics Seminar

LIX

The Plateau Saclay Combinatorics Seminar is held every Wednesday morning at 11 AM in room 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

Bijections for tree-decorated maps and applications to random maps

-- Luis Fredes (LaBRI, Bordeaux)

We introduce a new family of maps, namely tree-decorated maps where the tree is not necessarily spanning. To study this class of maps, we define a bijection which allows us to deduce combinatorial results, recovering as a corollary some results about spanning-tree decorated maps, and to understand local limits. Finally ...

Synchronizing codes, finite monoids of matrices and unambiguous automata

-- Andrew Ryzhikov (IGM, Paris-est)

We introduce a new family of maps, namely tree-decorated maps where the tree is not necessarily spanning. To study this class of maps, we define a bijection which allows us to deduce combinatorial results, recovering as a corollary some results about spanning-tree decorated maps, and to understand local limits. Finally ...

Des tresses aux amas via la dualité de Koszul

-- Matthieu Josuat-Vergès (UPEM)

Il est bien connu que le groupe de tresses admet une présentations avec des générateurs qui satisfont les relations de tresses. On peut voir ces générateurs comme échangeant deux brins voisins du point de vue géométrique. Une autre présentation, due à Birman, Ko, Lee, consiste à regarder un ensemble plus ...

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Translations: fr