Arbeitsgemeinschaft Diskrete Mathematik
Info: Das Seminar AGDM der TU Wien wird gemeinsam mit Kollegen der Universität Wien veranstaltet. For the winter semester we meet on Tuesdays from 15:00 to 16:30 at the University of Vienna (Oskar-Morgenstern-Platz 1) in Seminar Room 9 on the 2nd floor. Next semester, the seminars will be held in TU Wien.
Ort: Universität Wien, Oskar-Morgenstern-Platz 1, Seminar Room 9 on the 2nd floor
Zeit: Dienstag, 15:00-16:30 Uhr
Aktueller Termin
 Datum: |
26.11.2024 |
Titel: |
An Unexpected Symmetry on Graphs |
| Speaker: |
Florian FÜRSINN (Universität Wien) |
| Inhalt: |
On (connected) unlabeled graphs, very few bijections of interest, apart from taking the graph complement, are known. In this talk I will present a symmetry on the set of unlabeled connected simple graphs, hinting at the existence of an involution on them. More precisely, I will show that the maximum number of degree one vertices connected to a single vertex in a graph and the maximum number of vertices sharing the same closed neighborhood (minus one) are jointly symmetrically distributed. This result generalizes works of Kilibarda and Gessel -- Li and the proof relies on the theory of species. The talk is based on ongoing joint work with M. Gangl and M. Rubey. |
Vorträge in früheren Jahren
Übersicht: Vorträge Zeitraum 2005 - 2024
Bereits gehaltene Vorträge
| Datum: |
19.11.2024 |
| Titel: |
Phase transitions of block-weighted planar maps |
| Speaker: |
Zéphyr SALVY (Technische Universität Wien) |
| Datum: |
12.11.2024 |
| Titel: |
Polyominoes from operators on symmetric functions |
| Speaker: |
Marino ROMERO (University of Vienna) |
| Datum: |
05.11.2024 |
| Titel: |
Folding lemma and its applications in Number Theory |
| Speaker: |
Nikita SHULGA (La Trobe University Melbourne) |
| Datum: |
29.10.2024 |
| Titel: |
Growth diagram proofs for the Littlewood identities |
| Speaker: |
Florian SCHREIER-AIGNER (Universität Wien) |
| Datum: |
22.10.2024 |
| Titel: |
A central limit theorem for a card shuffling problem |
| Speaker: |
Shane CHERN (Universität Wien) |
| Datum: |
15.10.2024 |
| Titel: |
p(5n+4) again! Parity bias and it's unintended arithmetic consequences |
| Speaker: |
Manosij GHOSH DASTIDAR (TU Wien) |
| Datum: |
08.10.2024 |
| Titel: |
Lattice points and rational q-Catalan numbers |
| Speaker: |
Drew ARMSTRONG (University of Miami) |