Supported by the IBS Discrete Mathematics Group, the workshop brings together Korean graduate and undergraduate students and postdoctoral researchers studying combinatorics. Its aim is to promote interaction among young researchers, share research interests, and establish a foundation for future collaborative research.
The program included invited talks, contributed talks, and sessions for sharing and discussing open problems.
This workshop continues the Korean Student Combinatorics Workshop series from 2024.
The workshop was organized by the following four students:
The 2026 Workshop on Topological Combinatorics was successfully held at Gwangju Institute of Science and Technology (GIST) from June 28 to July 11, 2026. The workshop was organized by Andreas Holmsen (KAIST & IBS DIMAG), Jinha Kim (Chonnam National University & IBS DIMAG), and Minki Kim (GIST), with support from GIST, IBS Discrete Mathematics Group (DIMAG), and the National Research Foundation of Korea (NRF).
This workshop is the fifth in the international series on topological combinatorics initiated by Ron Aharoni. It brought together researchers working in topological combinatorics, discrete geometry, algebraic topology, geometric transversal theory, topological methods in combinatorics, and related areas. The first week consisted of invited lectures and research presentations, while the second week was devoted to collaborative research and open problem discussions.
More than 60 researchers from Korea and overseas participated during the two-week program. Participants represented a wide range of institutions, including IBS DIMAG, KAIST, GIST, Chonnam National University, Ajou University, DGIST, KIAS, Princeton University, Carnegie Mellon University, University of Waterloo, Charles University, Université Paris Cité, École nationale des ponts et chaussées, Arizona State University, Iowa State University, Binghamton University, UNAM, MPI-CBG Dresden, Singapore University of Technology and Design, and several other universities and research institutes.
The scientific program featured invited lectures by leading researchers together with short research presentations covering recent developments in topological combinatorics and its interactions with geometry, topology, algebra, and combinatorics. The collaboration week provided participants with ample opportunities to initiate new research projects and strengthen existing international collaborations.
From November 27 to November 31, 2025, the IBS Discrete Mathematics Group hosted the 5th East Asia Workshop on Extremal and Structural Graph Theory in Seoul. It is a workshop to bring active researchers in the field of extremal and structural graph theory, especially in the East Asia such as China, Japan, and Korea. Participants have great chance to discuss recent progress in graph theory, interesting open problems, finding new potential collaborators, and exploring the city.
The 2025 Combinatorics Workshop (2025 조합론 학술대회) was held from August 18, 2025 to August 20, 2025 at IBS, Daejeon. Combinatorics Workshop (조합론 학술대회) is an annual conference for researchers in combinatorics and related areas in Korea, started in 2004. There were 5 invited talks and 13 contributed talks.
Invited talks
Eun Jung Kim (김은정), KAIST / IBS DIMAG / CNRS
Dongsu Kim (김동수), KAIST
Ae Ja Yee (이애자), Pennsylvania State University
Zhicong Lin, Sandong University
O-joung Kwon (권오정), Hanyang University / IBS DIMAG
From February 17 to 19, 2025, the third and last week of the IBS-DIMAG Winter School on Graph minors took place at IBS with lectures by Sebastian Wiederrecht from KAIST. He gave lectures on explaining tangles, sketching the proof of the Graph Minor Structure Theorem of Robertson and Seymour, and presenting the key idea of improving the bounds (for vortices and apices) to polynomials.
This school was held for three consecutive weeks from February 3, 2025.
From February 10 to 12, 2025, the second week of the IBS-DIMAG Winter School on Graph Minors took place at IBS. This week, Maximilian Gorsky from the IBS Discrete Mathematics Group gave lectures on classifying society using a structure called transaction meshes.
The IBS-DIMAG Winter School on Graph Minors is taking place at IBS every Monday, Tuesday, and Wednesday over a three-week period, beginning on February 3, 2025. Sebastian Wiederrecht (KAIST) and Maximilian Gorsky (IBS Discrete Mathematics Group) are giving lectures. In the first week, the topics covered included the two-paths theorem, the flat wall theorem, and various results on societies, transactions, and vortices.
The IBS Discrete Mathematics Group had the “2024 DIMAG Internal Workshop” at the Lahan Hotel of Jeonju on November 19-23, 2024. Participants include almost all current members of DIMAG, Sebastian Wiederrecht and Eunjung Kim from KAIST, Minki Kim from GIST, Cheolwon Heo and Jungho Ahn from KIAS, Eun-Kyung Cho from Hanyang University, Niloufar Fuladi from INRIA, and Noleen Köhler from the University of Leeds. Every participant presented open problems and had active discussions.
The 2024 Combinatorics Workshop (2024 조합론 학술대회) was held from August 28, 2024 to August 30, 2024 at Chungbuk National University, Cheongju. Combinatorics Workshop (조합론 학술대회) is an annual conference for researchers in combinatorics and related areas in Korea, started in 2004. There were five invited talks and ten contributed talks.
