Institute of
Discrete Mathematics and Geometry



Arbeitsgemeinschaft Diskrete Mathematik

Info: Das Seminar AGDM wird gemeinsam mit Kollegen der Universität Wien veranstaltet.

Ort: TU-Wien, Freihaus (4., Wiedner Hauptstraße 8-10), Dissertantenraum, grüner Turm (A), 8. Stock.


Aktueller Termin



Zeit: Dienstags, 15.15 - 16.45h,

Datum: 28.1.2020
Titel: "The vectorial kernel method for walks with longer steps"
Vortragender: Valerie Roitner (TU Wien)



Inhalt: The (classical) kernel method has been folklore in combinatorics and related fields for a long time. There have been several extensions of the kernel method throughout the years, one of the most recent ones being the vectorial kernel method by Asinowski, Bacher, Banderier and Gittenberger. It can be used for deriving generating functions for lattice paths (with steps of length one) that avoid a fixed pattern, i.e. a certain sequence of consecutive steps. In this talk we will see a generalization of the vectorial kernel method to lattice paths with longer steps. We will also have a look at some applications of this generalization which can be used to prove a conjecture by Callan about the asymptotic behaviour of the expected number of ascents in Schröder paths.


 

Vorträge in früheren Jahren

Übersicht: Vorträge Zeitraum 2005 - 2019


Bereits gehaltene Vorträge

Datum: 21.1.2020
Titel: "Bijective proofs of ASM theorems"
Vortragende: Ilse Fischer (Univ. Wien)

Datum: 14.1.2020
Titel: "Asymptotics and statistics of Fishburn matrices and their generalizations"
Vortragende: Hsien-Kuei Hwang (Academia Sinica)

Datum: 17.12.2019
Titel: "Inversion and cubic vectors for permutrees"
Vortragende: Daniel Tamayo

Datum: 3.12.2019
Titel: "Basis of totally primitive elements of WQSym"
Vortragende: Hugo Mlodecki (Univ. Paris Sud)

Datum: 26.11.2019
Titel: "Towards type B quotientopes"
Vortragende: Julian Ritter (École Polytechnique)

Datum: 19.11.2019
Titel: "Cut Vertices in Random Planar Maps"
Vortragende: Michael Drmota (TU Wien)

Datum: 12.11.2019
Titel: "The existence of a cyclic sieving phenomenon for permutations via a bound on the number of border strip tableaux and invariant theory"
Vortragende: Martin Rubey (TU Wien)

Datum: 5.11.2019
Titel: "A weight-dependent inversion statistic and Catalan numbers"
Vortragende: Michael Schlosser (Univ. Wien)

Datum: 29.10.2019
Titel: "Combinatorics of the 2-PASEP"
Vortragende: Arthur Nunge (Univ. Wien)

Datum: 22.10.2019
Titel: "Long cycles in cubic planar graphs"
Vortragende: Clement Requile (TU Wien)

Datum: 15.10.2019
Titel: "Counting labelled graphs of path-width 2"
Vortragende: Marc Noy (UPC Barcelona)

Datum: 8.10.2019
Titel: "On zero-sum subsequences in some finite abelian p-groups"
Vortragende: Bidisha Roy (Harish-Chandra Research Institute, Allahabad, India)