Arbeitsgemeinschaft Diskrete Mathematik
Info: Das Seminar AGDM der TU Wien wird gemeinsam mit Kollegen der Universität Wien veranstaltet.
Die Arbeitsgemeinschaft findet im Sommersemester an der TU Wien statt.
Ort:
TU Wien, Freihaus (4., Wiedner Hauptstraße 8-10), Dissertantenraum, grüner Turm (A), 8. Stock.
Aktueller Termin
Zeit: Dienstag, 15:15-16:45 Uhr,
 Datum: |
25.06.2024 |
| Titel 1: |
"Plane trees with a Wiener-Hopf factorization and an application to loop-decorated planar maps" |
| Vortragende: |
Joonas Turunen (Univ. Wien) |
| Inhalt: |
We introduce a plane tree model, where each edge of the tree is equipped with a non-negative thickness parameter. This collection of trees, which is new to our knowledge, exhibits a simple yet rich recursive decomposition, giving rise to a Wiener-Hopf factorization for the generating functions. We are then able to solve this functional equation analytically via a Lagrangean parametrization. Furthermore, this tree model can be applied to the O(n) loop model on random planar maps, which is briefly explained during the talk. Based on a joint ongoing work with Jérémie Bouttier (Sorbonne Université) and Grégory Miermont (ENS de Lyon). |
Vorträge in früheren Jahren
Übersicht: Vorträge Zeitraum 2005 - 2023
Bereits gehaltene Vorträge
| Datum: |
18.06.2024 |
| Titel: |
"Enumeration of perfect matchings of cellular graphs" |
| Vortragender: |
Veronika Schreitter |
| Datum: |
18.06.2024 |
| Titel: |
"Background to the Razumov-Stroganov (Ex-)Conjecture" |
| Vortragender: |
Christian Theiner |
| Datum: |
11.06.2024 |
| Titel: |
"Popescu's nested approximation theorem for polynomial systems with one catalytic variable" |
| Vortragender: |
Gregor Böhm |
| Datum: |
04.06.2024 |
| Titel: |
"Enumeration of unlabelled chordal graphs with bounded tree-width" |
| Vortragender: |
Clément Requilé (UPC) |
| Datum: |
28.05.2024 |
| Titel: |
"Unimodal sequences and mixed modularity" |
| Vortragender: |
Robert Osburn (University College Dublin) |
| Datum: |
14.05.2024 |
| Titel: |
"Additive decomposability of multiplicative subsemigroups of the integers" |
| Vortragender: |
Pierre Bienvenu (TU Wien) |
| Datum: |
30.04.2024 |
| Titel: |
"Automorphic Mappings and Congruence Families" |
| Vortragender: |
Nicolas Smoot (Univ. Wien) |
| Datum: |
23.04.2024 |
| Titel: |
"Broadcasting-induced colorings of preferential attachment trees" |
| Vortragender: |
Colin Desmarais (Univ. Wien) |
| Datum: |
16.04.2024 |
| Titel: |
"Combinatorics of nondeterministic walks" |
| Vortragender: |
Michael Wallner (TU Wien) |
| Datum: |
09.04.2024 |
| Titel: |
"Badly approximable vectors and best approximation" |
| Vortragender: |
Nikolay Moshchevitin (TU Wien) |
| Datum: |
12.03.2024 |
| Titel: |
"Bigraded rings and major/descent indices" |
| Vortragender: |
Balázs Szendroi (Univ. Wien) |
| Datum: |
05.03.2024 |
| Titel: |
"The Rogers-Ramanujan Identities and Ariki-Koike Algebras" |
| Vortragender: |
Ae Ja Yee (Penn State University) |
| Datum: |
27.02.2024 |
| Titel: |
"The critical beta-splitting tree" |
| Vortragender: |
Svante Janson (Univ. Uppsala) |
| Datum: |
30.01.2024 |
| Titel: |
"Refined counting of distinct partitions and Rogers-Ramanujan type identities" |
| Vortragender: |
Shishuo FU (Chongqing University) |
| Datum: |
23.01.2024 |
| Titel: |
"Algebraicity of Hypergeometric Functions with Arbitrary Parameters" |
| Vortragender: |
Florian Fürnsinn (Universität Wien) |
| Datum: |
16.01.2024 |
| Titel: |
"The feedback arc set problem on some surface graphs" |
| Vortragender: |
Vera Vertesi (Universität Wien) |
| Datum: |
09.01.2024 |
| Titel: |
"Rowmotion, Promotion and Homomesy via Toggleability Statistics" |
| Vortragender: |
Tamas Hausel (IST Austria) |
| Datum: |
12.12.2023 |
| Titel: |
"Higgs bundle tournaments" |
| Vortragender: |
Tamas Hausel (IST Austria) |
| Datum: |
05.12.2023 |
| Titel: |
"Smith Normal Form in Combinatorics" |
| Vortragender: |
Patrick Kotsch (Universität Wien) |
| Datum: |
28.11.2023 |
| Titel: |
"Unimodular Valuations beyond Ehrhart" |
| Vortragender: |
Martin Rubey (TU Wien) |
| Datum: |
21.11.2023 |
| Titel: |
"Four decorated Ferrers diagrams and Schmidt-type partition identities" |
| Vortragender: |
Ali K. Uncu (Univ. of Bath and RICAM) |
| Datum: |
07.11.2023 |
| Titel: |
"Disemisimple Lie algebras and Pre-Lie and Post-Lie algebra structures" |
| Vortragender: |
Dietrich Burde (Univ. Wien) |
| Datum: |
31.10.2023 |
| Titel: |
"Components of large meandric systems and the infinite noodle" |
| Vortragender: |
Paul Thévenin (Univ. Wien) |
| Datum: |
24.10.2023 |
| Titel: |
"Partitions, Congruence Ideals, and the Localization Method" |
| Vortragender: |
Nicolas Smoot (Univ. Wien) |
| Datum: |
17.10.2023 |
| Titel: |
"(Elliptic) $A_n$ Selberg integrals" |
| Vortragender: |
Seamus Albion (Univ. Wien) |
| Datum: |
10.10.2023 |
| Titel: |
"An elliptic extension of the multinomial theorem" |
| Vortragender: |
Michael Schlosser (Univ. Wien) |