기초과학연구원 이산수학그룹
On September 12, 2023, Seog-Jin Kim (김석진) from Konkuk University gave a talk at the Discrete Math Seminar on the list chromatic number of the square of subcubic planar graphs of girth at least 6. The title of his talk was “The square of every subcubic planar graph of girth at least 6 is 7-choosable“.
The IBS Discrete Mathematics Group welcomes Yuzhen Qi, a new visiting student of the IBS Extremal Combinatorics and Probability Group. She is currently a graduate student of Shandong University. She arrived at IBS on September 7, 2023 and will stay with us until September 7, 2025.
On September 5, 2023, Sebastian Wiederrecht from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on the Erdős-Pósa property of H-minors in a graph from a minor-closed class of graphs for Kuratowski-connected shallow-vortex minors H. The title of his talk was “Delineating half-integrality of the Erdős-Pósa property for minors“.
The IBS Discrete Mathematics Group welcomes Bingyu Luan and Shuaichao Wang, new visiting students of the IBS Extremal Combinatorics and Probability Group.
Bingyu Luan is currently a graduate student of Shandong University. She arrived at IBS on August 31, 2023 and will stay with us until August 31, 2025.
Shuaichao Wang is currently a graduate student of Nankai University. He arrived at IBS on August 31, 2023 and will stay with us until August 31, 2025.
On August 29, 2023, Dabeen Lee (이다빈) from KAIST gave a talk at the Discrete Math Seminar on characterizing ideal multipartite clutters constructed from subspaces of finite vector spaces in terms of forbidden clutter minors. The title of his talk was “From coordinate subspaces over finite fields to ideal multipartite uniform clutters.”
On August 22, 2023, Linda Cook from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on bounding the dichromatic number of a directed graph not having an induced subgraph isomorphic to a fixed orientation of a path. The title of her talk was “Orientations of P_4 bind the dichromatic number“.
On August 9, 2023, R. Amzi Jeffs from Carnegie Mellon University gave a talk at the Discrete Math Seminar on the simplicial complexes and convex codes arising from the intersections of convex sets. The title of his talk was “Intersection patterns of convex sets“.
On August 9, 2023, the 2023 Mini-Workshop on Discrete Geometry was held at the IBS. This workshop consisted of three talks by Michael Dobbins from SUNY Binghamton, Andreas Holmsen from KAIST, and Minki Kim from GIST. Here is the list of talks.
The IBS Discrete Mathematics Group welcomes Haotian Yang, a new visiting student of the IBS Extremal Combinatorics and Probability Group. He is currently an undergraduate student of Shandong University. He arrived at IBS on August 6, 2023 and will stay with us until February 1, 2024.
On August 2, 2023, Daniel Kráľ from Masaryk University gave a talk on constructing common graphs with large chromatic numbers at the Discrete Math Seminar. The title of his talk was “High chromatic common graphs.”