News

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Welcome Eero Räty, Xiaofan Yuan, and Xin Wei, new members of IBS ECOPRO

The IBS Discrete Mathematics Group welcomes Dr. Eero Räty, Dr. Xiaofan Yuan, and Dr. Xin Wei, new research fellows at the IBS Extremal Combinatorics and Probability Group, starting January 1, 2026.

Dr. Eero Räty received his Ph.D. from the University of Cambridge under the supervision of Prof. Imre Leader. Until recently, he was a postdoctoral researcher at Umeå University, Sweden. He is interested in extremal and probabilistic combinatorics.

Dr. Xiaofan Yuan received her Ph.D. from the Georgia Institute of Technology under the supervision of Prof. Xingxing Yu. She is interested in graph theory and extremal combinatorics. Until recently, she was a postdoctoral researcher at Arizona State University.

Dr. Xin Wei received his Ph.D. from the University of Science and Technology of China under the supervision of Prof. Xiande Zhang. His research interests include combinatorics, coding theory, and graph theory and their interactions.

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Donggyu Kim (김동규) gave a talk on defining orthogonal matroids (even delta-matroids) with coefficients in terms of Grassmann-Plücker functions at the Discrete Math Seminar

On December 26, 2025, Donggyu Kim (김동규) from the Georgia Institute of Technology gave a talk at the Discrete Math Seminar on defining orthogonal matroids (even delta-matroids) with coefficients in terms of Grassmann-Plücker functions. The title of his talk was “Grassmann-Plücker functions for orthogonal matroids“.

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DIMAG hosted the “5th East Asia Workshop on Extremal and Structural Graph Theory” in Seoul

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.

Invited Speakers

Organizers

Seog-Jin Kim, Sang-il Oum, Kenta Ozeki, Hehui Wu

Venue

Fraser Place Namdaemun, Seoul

Program Book

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Donggyu Kim (김동규) received the 15th S-OIL Excellent Dissertation Award (제15회 에쓰-오일 우수학위논문상) in Mathematics

On November 26, 2025, Donggyu Kim (김동규) received the 15th S-OIL Excellent Dissertation Award (제15회 우수학위논문상) in Mathematics from the S-OIL Science Prodigy and Culture Foundation (에쓰-오일 과학문화재단), the Korean University Presidents Association (한국대학총장협회), and the Korean Academy of Science and Technology (한국과학기술한림원). This annual award recognizes young scientists in the fields of mathematics, physics, chemistry, life science, chemical engineering/material engineering, and IT.

Donggyu Kim was a research student of the IBS Discrete Mathematics Group from July 2019 to February 2025, and received his Ph.D. from KAIST. He is currently at the Georgia Institute of Technology.

Congratulations!

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Péter Pál Pach gave a talk on the maximum set of positive integers that avoids having any product of k elements equal to a d-th power at the Discrete Math Seminar

On November 25, 2025, Péter Pál Pach from the Budapest University of Technology and Economics gave a talk at the Discrete Math Seminar on the maximum set of positive integers that avoids having any product of k elements equal to a d-th power. The title of his talk was “Product representation of perfect cubes“.

IBS 이산수학그룹 Discrete Mathematics Group
기초과학연구원 수리및계산과학연구단 이산수학그룹
대전 유성구 엑스포로 55 (우) 34126
IBS Discrete Mathematics Group (DIMAG)
Institute for Basic Science (IBS)
55 Expo-ro Yuseong-gu Daejeon 34126 South Korea
E-mail: dimag@ibs.re.kr, Fax: +82-42-878-9209
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