2025 Korean Student Combinatorics Workshop (KSCW2025: 2025 조합론 학생 워크샵)
2025-08-20 - 2025-08-24 | The K-Hotel Gyeongju
Venue
The K-Hotel Gyeongju
Website
https://indico.ibs.re.kr/e/kscw2025
Organizers

Seokbeom Kim (김석범), KAIST and IBS Discrete Mathematics Group
Hyunwoo Lee (이현우), KAIST and IBS Extremal Combinatorics and Probability Group
Jaehyeon Seo (서재현), Yonsei University
Kyungjin Cho (조경진), POSTECH

5th East Asia Workshop on Extremal and Structural Graph Theory
2025-11-27 - 2025-11-30 | Seoul, Korea
The 5th East Asia Workshop on Extremal and Structural Graph Theory 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.

Date
November 27, 2025 Thursday (Arrival Day) — November 30, 2025 Sunday (Departure Day)
Venue
Fraser Place Namdaemun, Seoul
Program Book
Invited Speakers

Shinya Fujita (Yokohama City University)
Jie Han (Beijing Institute of Technology)
Tony Huynh (IBS Discrete Mathematics Group)
Jaehoon Kim (KAIST)
O-joung Kwon (Hanyang University / IBS Discrete Mathematics Group)
Hong Liu (IBS Extremal Combinatorics and Probability Group)
Jie Ma (University of Science and Technology of China / Tsinghua University)
Shun-ichi Maezawa (Nihon University)
Boram Park (Seoul National University)
Shohei Satake (Kumamoto University)
Tuan Tran (University of Science and Technology of China)
Shoichi Tsuchiya (Senshu University)
Xuding Zhu (Zhejiang Normal University)

Organizers
Seog-Jin Kim, Sang-il Oum, Kenta Ozeki, Hehui Wu
Registration
Invitation Only. https://indico.ibs.re.kr/event/1041/
There is no registration fee and one dinner (banquet) will be provided.
History

4th East Asia Workshop on Extremal and Structural Graph Theory

Mar. 27 – Mar. 31, 2025.
School of Mathematics, Sun-Yet Sen University, Guangzhou, China
Organizers: Ping Hu, Seog-Jin Kim, Kenta Ozeki, Hehui Wu.

3rd East Asia Workshop on Extremal and Structural Graph Theory

Nov. 1- Nov. 5, 2023.
The Southern Beach Hotel & Resort, Okinawa, Japan
Sponsored by the IBS Discrete Mathematics Group, Korea.
Organizers: Seog-Jin Kim, Sang-il Oum, Kenta Ozeki, Hehui Wu.

2nd East Asia Workshop on Extremal and Structural Graph Theory

Oct. 31-Nov. 4, 2019.
Held at UTOP UBLESS Hotel, Jeju, Korea
Sponsored by the IBS Discrete Mathematics Group, Korea.
Organizers: Seog-Jin Kim, Sang-il Oum, Kenta Ozeki, Hehui Wu.

1st East Asia Workshop on Extremal and Structural Graph Theory

Nov. 30-Dec. 2, 2018.
Held and sponsored by the Shanghai Center for Mathematical Sciences in China, under the name 2018 SCMS Workshop on Extremal and Structural Graph Theory.
Organizers: Ping Hu, Seog-Jin Kim, Kenta Ozeki, Hehui Wu.

Thursday
November 27, 2025

Time
Speaker
Affiliation
Title

16:00–18:00

Registration & Discussions

Friday
November 28, 2025

Time
Speaker
Affiliation
Title

09:20–10:00
Jaehoon Kim
KAIST
Hamilton cycles in pseudorandom graphs: Dirac’s theorem and approximate decompositions

10:00–10:30

Coffee Break

10:30–11:10
Jie Ma
University of Science and Technology of China / Tsinghua University
An exponential improvement for Ramsey lower bounds

11:20–12:00
Shinya Fujita
Yokohama City University
Connectivity keeping paths containing prescribed vertices in highly connected triangle-free graphs

12:00–14:00

Lunch Break

14:00–14:40
Shun-ichi Maezawa
Nihon University
Tree versus tree of preorder induced by rainbow forbidden subgraphs

14:50–15:30
Tony Huynh
IBS Discrete Mathematics Group
Rainbow triangles and the Erdős–Hajnal problem in projective geometries

15:30–15:50

Coffee Break

16:30–17:30

Problem Session

Saturday
November 29, 2025

Time
Speaker
Affiliation
Title

09:20–10:00
Xuding Zhu
Zhejiang Normal University
TBA

10:00–10:30

Coffee Break

10:30–11:10
Hong Liu
IBS Extremal Combinatorics and Probability Group
Chromatic, homomorphism, blowup thresholds and beyond

11:20–12:00
Shohei Satake
Kumamoto University
TBA

12:00–14:00

Lunch Break

14:00–14:40
Shoichi Tsuchiya
Senshu University
On the number of contractible edges in plane triangulations

14:50–15:30
Tuan Tran
University of Science and Technology of China
Littlewood-Offord bounds on the symmetric groups and applications

15:30–15:50

Coffee Break

15:50–16:30
O-joung Kwon
Hanyang University / IBS Discrete Mathematics Group
A coarse Erdős–Pósa theorem

16:30–17:30

Problem Session

18:30–21:00

Banquet

Sunday
November 30, 2025

Time
Speaker
Affiliation
Title

10:00–10:40
Jie Han
Beijing Institute of Technology
Perturbation of dense graphs

10:40–10:50

Break

10:50–11:30
Boram Park
Seoul National University
Graphs avoiding cycles of length 0 modulo 4

11:30–12:00

Closing
