Every once in a while we gather three researchers and let them give about 30-minute-talks in combinatorics.
The event takes place at Edifici històric of Universitat de Barcelona. The room differs from time to time.
To see the abstracts hover over the titles.
upcoming
Tuesday, March 5th 2024, room B1 (ground floor edifici històric mathemàtiques)
| 15:00 |
Guillem Perarnau | Universitat Politècnica de Catalunya |
Random w-trees and automata syncronization |
15:40 |
Juan Pablo Peña Alcayaga | Universidad de Chile |
Bounding the proper conflict-free and odd chromatic number |
16:20 |
Monica Andrea Reyes | Universitat de Lleida | Johnson graphs in the analysis of spectral properties of token graphs |
past
Tuesday, January 30th 2024, seminar room IMUB (top floor edifici històric mathemàtiques)
| 15:00 |
Nantel Bergeron | York University |
The excedance quotient of the Bruhat order and Quasisymmetric Varieties |
15:40 |
Aram Dermenjian | University of Manchester |
Enumerating Weyl Cones of Shi arrangements |
16:20 |
Robin Simoens | Ghent University | Cospectral mates for generalized Johnson and Grassmann graphs |
Tuesday, November 7th 2023, seminar room IMUB (top floor edifici històric mathemàtiques)
| 15:00 |
Cristina Dalfó | Universitat de Lleida |
A general method to find the spectrum and eigenspaces of the token graph of a cycle |
15:40 |
Sara Asensio | Universidad de Valladolid |
The sensitivity conjecture and its resolution via graph theory |
16:20 |
Gil Puig i Surroca | Université Paris Dauphine | On maximum acyclic sets and random regular digraphs |
Tuesday, October 24th 2023, seminar room IMUB (top floor edifici històric mathemàtiques)
| 15:30 |
Jérémie Chalopin | Aix-Marseille Université |
Unlabeled Sample Compression Schemes and Corner Peelings
for Ample and Maximum Classes
|
16:10 |
Kolja Knauer | Universitat de Barcelona | Beyond Symmetry in Generalized Petersen graphs |
16:50 |
Eva Philippe | Universitat de Barcelona |
Geometric realizations via triangulations of flow polytopes |
Thursday, September 14th 2023, room S3 (basement edifici històric mathemàtiques)
| 15:30 |
Vincent Pilaud | Universitat de Barcelona |
Deformed permutahedra, quotientopes and beyond |
16:10 |
Victor Poupet | Université Montpellier |
Reconstructing words using queries on subwords or factors |
16:50 |
Petru Valicov | Université Montpellier |
Computer assisted proofs for discharging method on planar graphs |
Wednesday, June 21st 2023, room B5 (ground floor edifici històric mathemàtiques)
| 15:30 |
Emeric Gioan | Université Montpellier |
Geometrical interpretations of the Tutte polynomial in hyperplane arrangements and oriented matroids |
16:10 |
František Kardoš | Univerzita Komenského v Bratislave | New reducible configurations for Barnette's conjecture |
16:50 |
Bernat Rovira Segú | Universitat de Barcelona |
On Outerplanar Partial Cubes |
Tuesday, May 16th 2023, room T2 (top floor edifici històric mathemàtiques)
| 15:30 |
Bruno Benedetti | University of Miami |
Vertex Labeling Properties on Simplicial Complexes |
16:10 |
Juanjo Rué | Universitat Politècnica de Catalunya | Asymptotic enumeration of bipartite planar maps and graphs |
16:50 |
Rangel Hernández Ortiz | Universitat Rovira i Virgili |
Roudneff’s conjecture in dimension 4 |
Tuesday, October 25th 2022, room 113 (ground floor edifici històric filologia)
| 15:00 |
Jérémie Chalopin | Aix-Marseille Université |
A local-to-global characterization of Helly graphs |
15:40 |
Victor Chepoi | Aix-Marseille Université | On biautomaticity of Helly groups and CB-groups |
16:20 |
Julian Pfeifle | Universitat Politècnica de Catalunya |
Practical semidefinite programming bounds in Julia for Lovász' Theta function |
Tuesday, October 4th 2022, room 312 (top floor edifici històric filologia)
| 15:00 |
Arnau Padrol | Universitat de Barcelona | Many polytopes |
| 15:40 |
Anna de Mier | Universitat Politècnica de Catalunya |
The chromatic symmetric function and polynomials for marked graphs |
| 16:20 |
Torsten Ueckerdt | Karlsruher Institut für Technologie |
When Catching is not Surrounding in Cops and Robber |
Thursday, July 14th 2022, room T2 (top floor edifici històric mathemàtiques)
| 15:00 |
Anton Dochtermann | Texas State University |
Completing shellings and Simon’s conjecture for matroids |
| 15:40 |
Carolina Benedetti | Universidad de los Andes |
Quotients of lattice path matroids |
| 16:20 |
Gil Puig i Surroca | Universitat de Barcelona |
The representation problem, monoids and sparse graph classes |
organizer
Kolja Knauer, Universitat de Barcelona
Please contact me if you want to be on the mailing-list for this seminar or if you wish to give a talk.