Dutch-Belgian discrete math seminar
9th Edition at TU/e, The Netherlands
19 March 2026
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We are happy to announce the 8th edition of the Dutch-Belgian seminar in discrete mathematics at Eindhoven University of Technology, on March 19, 2026.
This seminar aims to give young researchers a platform to share their recent results on topics under the umbrella of discrete mathematics. Earlier seminar editions were held at TU/e (3 February 2022, 6 October 2023), VUB (25 May 2022, 31 May 2023, 3 May 2024, 12-13 June 2025), UGent (20 January 2023, 9 December 2024).
The program for this edition is as follows:
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| 11:00-11:30 |
Marta Messia (VUB) |
On the Etzion and Silberstein conjecture for block Ferrers diagrams
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| 11:30-12:00 |
Lara Vicino (RUG) |
Hierarchical Locally Recoverable Codes on surfaces
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| 12:00-13:00 |
LUNCH |
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| 13:00-13:30 |
Harper Reijnders (TU/e) |
Improved Gilbert-Varshamov bound for sum-rank-metric codes via graph theory
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| 13:30-14:00 |
Lars van der Kuil (Leiden University) |
The Hat Guessing Number of Graphs
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| 14:00-14:30 |
COFFEE BREAK |
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| 14:30-15:00 |
Jan Meeus (UGent) |
Tales of Hoffman: from a distance
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| 15:00-15:30 |
Philippe Tranchida (ULB) |
Group operations extended to coset geometries, with applications to abstract regular polytopes
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| 15:30-16:00 |
Valentino Smaldore (Universita degli Studi di Padova, Italy) |
Strongly regular graphs with 2-transitive two-graphs
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The event will take place in building Atlas 2.225 (2nd floor), at the TU/e.
Registration is free but mandatory (for logistic reasons, since lunches will be included) and can be done through the following link: registration form.
The seminar is funded by the Research Foundation Flanders (FWO) and by the Netherlands Organization for Scientific Research (NWO).
Organizers:
Aida Abiad (TU/e, VUB, UGent)
Jan De Beule (VUB)
Sam Mattheus (VUB)
8th Edition at VUB, Belgium
12-13 June 2025
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| DAY 1: 12 June 2025 |
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| 10:55-11:00 |
OPENING |
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| 11:00-12:00 |
Leo Storme (Ghent University, Belgium) |
Substructures of Finite Projective Spaces and Finite Classical Polar Spaces
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| 12:00-13:00 |
LUNCH |
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| 13:00-14:00 |
Ferdinando Zullo (Università degli Studi della Campania "Luigi Vanvitelli", Italy) |
Sidon spaces and quadrics over finite fields
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| 14:00-15:00 |
Gianira Alfarano (Rennes University, France) |
The geometry of one-weight linear codes
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| 15:00-16:00 |
BREAK |
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| 16:00-... |
PhD defense Jonathan Mannaert |
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| DAY 2: 13 June 2025 |
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| 10:00-10:30 |
COFFEE |
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| 10:30-11:00 |
Louka Peters (Ghent University, Belgium) |
Switching graphs and Hadamard matrices
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| 11:00-11:30 |
Jim Wittebol (VUB, Belgium) |
Universality of the asymptotic preorder of graphs
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| 11:30-12:00 |
Ananth Ravi (TUDelft, Netherlands) |
Oddtown, Nearly Orthogonal Sets, and Triangle-Free Graphs
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| 12:00-13:00 |
LUNCH |
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| 13:00-13:30 |
Nils van de Berg (TU/e, Netherlands) |
Counting cospectral graphs made via switching
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| 13:30-14:00 |
Fabrizio Conca (TU/e, Netherlands) |
Connectivity and linear codes
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| 14:00-14:30 |
Davide Mattiolo (KULeuven, Belgium) |
Pairwise disjoint perfect matchings in r-edge-connected r-graphs
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| 14:30-15:00 |
CLOSING and COFFEE |
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7th Edition at Ghent University, Belgium
9 December 2024
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| 11:15-11:30 |
OPENING |
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| 11:30-12:00 |
Eileen Robinson (ULB, Belgium) |
Coloring antiprismatic graphs
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| 12:00-12:30 |
Thijs van Veluw (UGent-TU/e, Belgium-The Netherlands) |
Hoffman colorings of graphs
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| 12:30-13:30 |
LUNCH |
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| 13:30-14:00 |
Emiliano Liwski (KULeuven, Belgium) |
An algorithm to identify the set of minimal matroids
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| 14:00-14:30 |
Vlad Taranchuk (UGent, Belgium) |
Caps, graphs, and polynomials
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| 14:30-15:00 |
COFFEE BREAK |
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| 15:00-15:30 |
Andrea Di Giusto (TU/e, The Netherlands) |
To Generalized Weights... and Beyond: new invariants for linear codes
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| 15:30-16:00 |
Jonathan Mannaert (VUB, Belgium) |
Boolean degree d functions in the (q-)Johnson scheme
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6th Edition at Vrije Universiteit Brussel (VUB), Belgium
3 May 2024
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| 11:15-11:30 |
OPENING |
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| 11:30-12:00 |
Carol Zamfirescu (UGent, Belgium) |
Counting small cycle double covers
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| 12:00-12:30 |
Jorik Jooken (KULeuven, Belgium) |
Computational bounds for the minimum order of an edge-girth-regular graph
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| 12:30-13:30 |
LUNCH |
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| 13:30-14:00 |
Giacomo Masiero (KULeuven, Belgium) |
On Matroid Varieties and Liftability of Point-Line Configurations
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| 14:00-14:30 |
Alexander Van Werde (TU/e, The Netherlands) |
Cokernel statistics of walk matrices: a random matrix approach towards generalized spectral determinacy of random graphs
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| 14:30-15:00 |
COFFEE BREAK |
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| 15:00-15:30 |
Wout Moltmaker (University of Amsterdam, The Netherlands) |
Invariants of Planar Knotoids
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| 15:30-16:00 |
Sjanne Zeijlemaker (TU/e, The Netherlands) |
Computing equitable partitions of graphs with a unique tree representation
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5th Edition at Eindhoven University of Technology (TU/e), The Netherlands
6 October 2023
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| 10:45-11:00 |
OPENING |
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| 11:00-12:00 |
Sam Mattheus (VUB, Belgium) |
The asymptotics of r(4,t)
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| 12:00-12:30 |
Antonina Khramova (TU/e, The Netherlands) |
On cospectrality in hypergraphs and gain graphs
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| 12:30-13:30 |
LUNCH |
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| 13:30-14:00 |
Tim Seynnaeve (KULeuven, Belgium) |
Quasihomomorphisms from the integers into Hamming metrics
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| 14:00-14:30 |
Vincent Schmeits (UvA, The Netherlands) |
Perfect state transfer in quantum walks on orientable maps
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| 14:30-15:00 |
COFFEE BREAK |
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| 15:00-15:30 |
Alvaro Samperio (Universidad de Valladolid, Spain) |
Sparse recovery of an electrical network based on algebraic variety fitting and graph sparsification
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| 15:30-16:00 |
Benjamin Jany (TU/e, The Netherlands) |
Bounds and field size for Locally Recoverable Codes
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| 16:00-16:30 |
Stijn Cambie (KULeuven, Belgium) |
The Erdős distinct subset sums problem in modular setting for small modulus
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4th Edition at Vrije Universiteit Brussel (VUB), Belgium
31 May 2023
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| 10:45-11 |
OPENING |
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| 11-11:30 |
Ferdinand Ihringer (UGent, Belgium) |
Strongly regular graphs satisfying the 4-vertex condition
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| 11:30-12 |
Maarten de Boeck (Memphis University, U.S.A.) |
Neumaier graphs
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| 12-12:30 |
Altan Kılıç (TU/e, The Netherlands) |
Codes and Knots
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| 12:30-13:30 |
LUNCH |
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| 13:30-14 |
Sjanne Zeijlemaker (TU/e, The Netherlands) |
On the diameter and zero forcing number of some graph classes in the Johnson, Grassmann and Hamming association scheme
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| 14-14:30 |
Nacho Lopez (University of Lleida, Spain) |
Measuring the closeness to Moore graphs
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| 14:30-15 |
COFFEE BREAK |
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| 15-15:30 |
Jesus Ceresuela (University of Lleida, Spain) |
On mixed radial Moore graphs of diameter 3
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| 15:30-16 |
Carsten Dietzel (VUB, Belgium) |
Getting things done with Constraint Programming
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Group photos of previous editions:
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