기초과학연구원 이산수학그룹
On September 18, 2026, David R. Wood from Monash University gave a talk showing the proof of the Erdős-Sós conjecture found by GPT Astra at the Discrete Math Seminar. The title of his talk was “The Erdős-Sós Theorem“.
On September 15, 2026, Gabriëlle Zwaneveld from University of Amsterdam gave a talk on oriented graphs with the same number of neighbors and second neighbors at each vertex, motivated by Seymour’s second neighborhood conjecture, at the Discrete Math Seminar. The title of her talk was “On Seymour-tight orientations“.
The IBS Discrete Mathematics Group (DIMAG) in Daejeon, Korea invites applications for four research fellowship positions (senior researcher positions).
DIMAG is a research group that was established on December 1, 2018 at the Institute for Basic Science (IBS), led by its Chief Investigator (CI) Sang-il Oum. DIMAG is located at the headquarters of IBS in Daejeon, South Korea, a city of 1.5 million people.
Website : https://dimag.ibs.re.kr/
Currently, DIMAG consists of researchers from various countries and the work is done in English. DIMAG is co-located with the IBS Extremal Combinatorics and Probability Group (ECOPRO).
Successful candidates for the research fellowship positions will be new or recent PhDs with outstanding research potential in all fields of Discrete Mathematics with emphasis on Structural Graph Theory, Extremal Graph Theory, Combinatorial Optimization, Matroid Theory, and Algorithms.
This appointment is for about two years, and the starting salary is no less than KRW 66,000,000. The appointment is one-time renewable up to 5 years in total, contingent upon the outstanding performance of the researcher. The expected appointment date is September 1, 2027, and it can be adjusted to earlier or later, but no later than December 1, 2027. This is purely a research position and will have no teaching duties. However, if desired, successful candidates may have the opportunity to teach at KAIST.
A complete application packet should include:
1. AMS standard cover sheet (preferred) or cover letter (PDF format)
2. Curriculum vitae including a list of publications and preprints (PDF format)
3. Research statement (PDF format)
4. Consent to Collection and Use of Personal Information (form available on the application page)
5. 3 recommendation letters
For full consideration, applicants should upload items 1, 2, 3, and 4 on the application website (https://dimag.ibs.re.kr/apply) by November 30, 2026 (Anywhere on Earth (AoE)), and arrange their recommendation letters to be submitted directly by the letter writers through the link sent via email during the online application process by December 1, 2026 (Anywhere on Earth (AoE)).
Based on the information entered during the online application process, a submission link will be sent to each recommender. Only recommendation letters submitted directly by the recommender will be accepted. Applications with missing required documents will not be considered. DIMAG encourages applications from individuals of diverse backgrounds.
For Korean citizens who have not yet completed their military duty: 전문연구요원 종사를 희망하는 경우에는 지원 의사와 병역 관계를 cover letter 등에 표시하여 제출 필요. 다만 현역입영대상자의 전문연구요원 신규 편입은 불가하며, 보충역 대상자 및 타 기관에서 전직해서 오는 경우에 한하여 지원 가능(전직 요건이 충족 되어야만 함)
Inquiry: dimag _@_ ibs.re.kr (remove _)
The IBS Discrete Mathematics Group held the “2026 DIMAG Internal Workshop” at the Kensington Resort in Namwon on September 9-13, 2026. Participants included all but one of DIMAG’s current members, as well as Sebastian Wiederrecht (KAIST), Minki Kim (GIST), Seonghyuk Im (KIAS), and Hojin Chu (KIAS). Every participant presented open problems, and there were active discussions throughout, leading to several progress reports.
On September 8, 2026, Olga Medrano Martín del Campo from the IBS Discrete Mathematics Group gave a talk on ε-saturation of classes of graphs of bounded Littlestone dimension and VC dimension at the Discrete Math Seminar. The title of her talk was “Epsilon-saturation for Littlestone classes and stable graphs“.
On September 1, 2026, Ben Lund from Xidian University, China gave a talk at the Discrete Math Seminar on an upper bound of the number of incidences between points and n-dimensional projective subspaces in PG(n+d,q). The title of his talk was “Incidences between points and n-flats in PG(n+d,q)“.
The IBS Discrete Mathematics Group welcomes Dr. Xiying Du, a new research fellow at the IBS Discrete Mathematics Group, starting on September 1, 2026.
She received her Ph.D. from the Georgia Institute of Technology under the supervision of Prof. Rose McCarty and Prof. Xingxing Yu. She is interested in structural graph theory, in particular graph linkages, degree-boundedness, and induced subgraphs.
The IBS Discrete Mathematics Group welcomes Dr. William J. Wesley, a new research fellow at the IBS Discrete Mathematics Group, starting September 1, 2026.
He received his Ph.D. from the University of California, Davis under the supervision of Prof. Jesús A. De Loera. Until recently, he was an SEW Visiting Assistant Professor at the University of California, San Diego. His research is focused primarily on computational Ramsey theory, and he is more broadly interested in combinatorics, algebra, and optimization.
The IBS Discrete Mathematics Group welcomes Dr. Mingyuan Rong, a new research fellow at the IBS Extremal Combinatorics and Probability Group, starting September 1, 2026.
Mingyuan Rong received his Ph.D. from the University of Science and Technology of China under the supervision of Prof. Jie Ma. Until recently, he was a Visiting Student Researcher at the University of Warwick, working with Prof. Oleg Pikhurko. He is interested in extremal set theory and extremal graph theory.
ASIACOMB 2026, the inaugural conference of the ASIACOMB series, was held at the Daejeon Convention Center (DCC) in Daejeon, Korea from August 24 to August 28, 2026. ASIACOMB is a biennial conference held in Asia that promotes international collaboration by strengthening research connections and providing a high-level forum for ideas in combinatorics. It was organized by the IBS Extremal Combinatorics and Probability Group, with Hong Liu (IBS ECOPRO) as the chair of the organizing committee, together with Felix Christian Clemen (University of Victoria), Zichao Dong (IBS ECOPRO), Seonghyuk Im (KIAS), Suyun Jiang (Jianghan University), and Zhuo Wu (Universitat Politècnica de Catalunya).
The conference featured nine plenary talks, a prize winner talk by Huy Tuan Pham, the winner of the Asian Prize for Combinatorics, as well as 145 contributed talks and 6 poster presentations.
The plenary speakers were: