On June 9, 2026, J. Pascal Gollin from University of Primorska gave a talk at the Discrete Math Seminar on the existence of a balanced separator dominated by a small number of vertices in a graph excluding a wheel as an induced minor. The title of his talk was “Dominated balanced separators in wheel-induced-minor-free graphs“.
Maria Chudnovsky gave a talk on bounding treewidth of n-vertex graphs excluding fixed induced minors as a function of n at the Discrete Math Seminar
On June 2, 2026, Maria Chudnovsky from Princeton University gave a talk on bounding treewidth of n-vertex graphs excluding fixed induced minors as a function of n at the Discrete Math Seminar. The title of her talk was “Induced minors and treewidth“.
Fernanda Rivera Omaña gave a talk on the Erdős-Pósa property for matroid minors at the Discrete Math Seminar
On May 26, 2026, Fernanda Rivera Omaña from the University of Waterloo gave a talk at the Discrete Math Seminar on the Erdős-Pósa property for matroid minors. The title of her talk was “Erdős-Pósa theorem for matroids“.
Xavier Goaoc gave a talk on a tree decomposition of the chirotopes of a planar point set and its application to counting triangulations at the Discrete Math Seminar
On May 19, 2026, Xavier Goaoc from Université de Lorraine gave a talk at the Discrete Math Seminar on a tree decomposition of the chirotopes of a planar point set and its application to counting triangulations of a chirotope. The title of his talk was “A canonical tree decomposition for order types, and some applications“.
Welcome Arnaud Patey, a new graduate student of the IBS Discrete Mathematics Group
The IBS Discrete Mathematics Group welcomes Arnaud Patey, a new graduate student of the Discrete Mathematics Group from May 18, 2026 to July 17, 2026. He is a MS student at ENS Rennes.
Benjamin Duhamel gave a talk on characterizing forests F such that forbidding a biclique and an induced minor isomorphic to F implies bounded path-width at the Discrete Math Seminar
On May 12, 2026, Benjamin Duhamel from ENS de Lyon gave a talk at the Discrete Math Seminar on characterizing forests F such that forbidding a biclique and an induced minor isomorphic to F implies bounded path-width. The title of his talk was “Excluding a forest induced minor“.
Maximilian Gorsky gave a talk on a new algorithm for k-disjoint paths problem with an explicit running time at the Discrete Math Seminar
On May 6, 2026, Maximilian Gorsky from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on a new algorithm for k-disjoint paths problem with an explicit running time. The title of his talk was “The Disjoint Paths Problem lies in the Oort cloud of algorithms“.
Xin Wei gave a talk on the maximum size of a t-perfect hash family over an alphabet of size q at the Discrete Math Seminar
On April 28, 2026, Xin Wei (魏歆) from the IBS Extremal Combinatorics and Probability Group gave a talk at the Discrete Math Seminar on the maximum size of a t-perfect hash family over an alphabet of size q. The title of his talk was “Separating hash families with large universe“.
Mamadou Moustapha Kanté gave a talk on characterizing strongly flip-flat graph classes without a large complete bipartite subgraph at the Discrete Math Seminar
On April 7, 2026, Mamadou Moustapha Kanté from Université Clermont Auvergne gave a talk at the Discrete Math Seminar on characterizing strongly flip-flat graph classes without a large biclique. The title of his talk was “Strongly flip-flat classes of graphs“.
Welcome Marguerite Bin, a new graduate student of the IBS Discrete Mathematics Group
The IBS Discrete Mathematics Group welcomes Marguerite Bin, a new graduate student of the Discrete Mathematics Group from April 2, 2026 to May 26, 2026. She is a Ph.D. student at Université de Lorraine. Her advisor is Xavier Goaoc.











