On August 7, 2026, Hyunwoo Lee (이현우) from KAIST and IBS Extremal Combinatorics and Probability Group gave a talk at the Discrete Math Seminar on a recent super-exponential lower bound for the multicolor triangle Ramsey number by OpenAI. The title of his talk was “A super-exponential lower bound construction for the multicolor triangle Ramsey problem discovered by OpenAI“.
Meike Hatzel gave a talk on a structural characterization of digraphs not immersing a cylindrical grid at the Discrete Math Seminar
On August 5, 2026, Meike Hatzel from TU Darmstadt gave a talk at the Discrete Math Seminar on a structural characterization of digraphs not immersing a cylindrical grid. The title of her talk was “Directed tree-cutwidth and immersions“.
Tomohiro Koana gave a talk on a faster FPT algorithm for expanding a subgraph to be a 2-connected subgraph of a given graph by adding at most k edges
On August 4, 2026, Tomohiro Koana from University of Tokyo gave a talk at the Discrete Math Seminar on a single-exponential fixed-parameter algorithm for enlarging a subgraph with at most k edges to make a 2-connected subgraph of a given graph. The title of his talk was “A Single-Exponential FPT Algorithm for 2-Vertex-Connectivity Augmentation“.
Welcome Olga Medrano Martín del Campo, a new member of the IBS Discrete Mathematics Group
The IBS discrete mathematics group welcomes Dr. Olga Medrano Martín del Campo, a new research fellow at the IBS Discrete Mathematics Group from August 1, 2026. She received her Ph.D. from the University of Chicago under the supervision of Prof. Maryanthe Malliaris. She is interested in Learning in Theoretical Computer Science and connections to Logic and Combinatorics.
Welcome Rifakat Alim Rashkee, a new graduate student of the IBS Discrete Mathematics Group
The IBS Discrete Mathematics Group welcomes Rifakat Alim Rashkee, a new graduate student of the Discrete Mathematics Group from August 1, 2026. He received his B.S. degree from KAIST and entered the Department of Mathematical Sciences at KAIST as a graduate student on March 2026. His advisor is Sebastian Wiederrecht.






