Séminaire Lotharingien de Combinatoire, B82pref (2019), 1 p.

Carlos André, Olga Azenhas, João Gouveia, António Guedes de Oliveira, Ricardo Mamede


The 82nd Meeting of the Séminaire Lotharingien de Combinatoire took place in the Hotel das Termas da Curia, from April 14 to April 17, 2019. It was the second time that the Séminaire met in Portugal (and the second time in Curia).

Wednesday afternoon was added to the programme to allow for enough time to those coming far from here. Participants were expected to arrive for dinner on Sunday and leave after breakfast on Thursday.

The two series of main lectures were given by

François BERGERON (Université de Québec à Montréal)
"Schur Positivity and Recent Trends in Algebraic Combinatorics"


Thomas LAM (University of Michigan, Ann Arbor)
"Total Positivity"

We are grateful to CMUC (Centre for Mathematics of University of Coimbra), CEAFEL (Center for Functional Analysis, Linear Structures and Applications), CMUP (Centro de Matemática da Universidade do Porto), FCT (Fundação para a Ciência e a Tecnologia), for their substantial financial support; and to the Department of Mathematics, Faculty of Science and Technology, University of Coimbra, for the generous organisational support.

Finally, we wish to thank the speakers, all those who proposed talks which however could not be put on the programme because of limited time, and all the participants, who, together, made this edition of the Séminaire a significant success.

Contributed talks:

Jose Ramón BROX LÓPEZ: Arithmetic relations between the coefficients of a polynomial caused by its fixed divisor

Camille COMBE: Cubic realizations of Tamari interval lattices

Inês Filipa SERÔDIO COSTA: Queens' Graph

Maciej DOLEGA: Schur positivity of Macdonald cumulants

Rui DUARTE: Pak-Stanley labeling of the Catalan arrangement of hyperplanes

Justine FALQUE: Classification of P-oligomorphic permutation groups

Rosário FERNANDES: The t-term rank of a (0,1)-matrix

David GARCÍA-GARCÍA: Symmetric functions and Toeplitz+Hankel matrices

António José GIRÃO: Turán theorems for unavoidable patterns

Théo KARABOGHOSSIAN: Polynomial invariant and reciprocity theorem on the Hopf monoid of hypergraphs

Anna Margarethe LIMBACH: Polyhedral and algebraic aproaches to the k-dimensional multiplication table problem

Baptiste LOUF: Simple recurrence formulas for bipartite maps with prescribed degrees

Jorge NEVES: Joins, ears and Castelnuovo-Mumford regularity

Bérénice DELCROIX-OGER: Chains in noncrossing partition posets

Soichi OKADA: Positivity for symplectic Q-functions

Raúl PENAGUIÃO: From presheaves to Hopf algebras

Stephan PFANNERER: Promotion on oscillating and alternating tableaux and rotation of matchings and permutations

Salim ROSTAM: Stuttering multipartitions and blocks of Ariki-Koike algebras

Volker STREHL: Solving a linear system (a tribute to the memory of A.L.)

Jacinta TORRES: Kostka-Foulkes polynomials in type Cn

Anna Vanden WYNGAERD: The generalised Delta square conjecture

List of Participants: