Former Members - Discrete Mathematics Group

Research Fellows

Methuku, Abhishek

Research Fellow (2019.8.1-2020.1.15)

Ph.D. in Mathematics, Central European Univ. (2019).
Advisor: Gyula O. H. Katona and Ervin Győri.
Currently, an assistant professor at the Department of Mathematics, UIUC, USA.

Tompkins, Casey

Research Fellow (2019.9.1-2021.11.30)

Ph.D. in Mathematics, Central European Univ. (2015).
Ph.D. Advisor: Gyula O. H. Katona
Currently, a post-doctoral researcher at the Rényi Institute, Budapest, Hungary.

Ph.D. in Mathematical Sciences, KAIST. (2018).
Ph.D. Advisor: Andreas Holmsen
Currently, an associate professor at the Department of Mathematical Sciences, GIST (Gwangju Institute of Science and Technology), Gwangju, Korea.

Tran, Tuan (Trần Mạnh Tuấn)

Young Scientist Fellow (2020.8.1-2022.6.28)

Ph.D. in Mathematics, Freie Universität Berlin (2015).
Ph.D. Advisor: Tibor Szabó
Currently, an associate professor at the University of Science and Technology of China (USTC), Hefei, Anhui, China.

Lee, Dabeen (이다빈)

Young Scientist Fellow (2021.1.1-2022.6.30)
Research Fellow (2019.6.16-2020.12.31)

Ph.D. in Algorithms, Combinatorics, and Optimization, Carnegie Mellon Univ. (2019).
Ph.D. Advisor: Gerards Cornuejols
Currently, an assistant professor at the Department of Mathematical Sciences, Seoul National University, Seoul, Korea.

Kim, Jinha (김진하)

Visiting Research Fellow (2023.11.16-)
Young Scientist Fellow (2023.3.1-2023.8.25)
Research Fellow (2020.9.1-2023.2.28)

Ph.D. in Mathematics, Seoul National University (2019).
Ph.D. Advisor: Woong Kook (국웅)
Currently, an assistant professor at the Department of Mathematics, Chonnam National University, Gwangju, Korea.

Chakraborti, Debsoumya (দেবসৌম্য চক্রবর্তী)

Research Fellow (2020.8.16-2023.8.31)

Ph.D. in Algorithms, Combinatorics, and Optimization, Carnegie Mellon Univ. (2020).
Ph.D. Advisor: Po-Shen Loh
Currently, an assistant professor at IIT Bombay, India.

Cook, Linda

Research Fellow (2021.8.1-2024.7.31)

Ph.D. in Applied and Computational Mathematics, Princeton Univ. (2021).
Ph.D. Advisor: Paul Seymour
Currently, an assistant professor at the Department of Mathematics, University of Utrecht.

Gollin, J. Pascal

Young Scientist Fellow (2021.8.1-2024.7.31)
Research Fellow (2019.10.1-2021.7.31)

Ph.D. in Mathematics, Universität Hamburg. (2019).
Ph.D. Advisor: Reinhard Diestel
Currently, a postdoctoral researcher at the University of Primorska, Slovenia.

Hendrey, Kevin

Research Fellow (2019.8.16-2024.8.15)

Ph.D. in Mathematics, Monash Univ. (2019).
Ph.D. Advisor: David R. Wood
Currently, a postdoctoral researcher at Monash University, Australia.

Clifton, Alexander

Research Fellow (2022.8.16-2024.8.31)

Ph.D. in Mathematics, Emory Univ. (2022).
Ph.D. Advisor: Hao Huang
Currently, a postdoctoral researcher at Czech Technical University, Prague, Czech.

Wiederrecht, Sebastian

Research Fellow (2022.7.16-2024.9.30)

Ph.D. from Technische Universität Berlin (2021).
Ph.D. Advisor: Stephan Kreutzer
Currently, an assistant professor at the School of Computing, KAIST, Daejeon, Korea.

Lund, Ben

Research Fellow (2020.8.1-2025.7.31)

Ph.D. in Mathematics, Rutgers Univ. (2017).
Ph.D. Advisor: Shubhangi Saraf
Currently, a specially appointed professor at the School of Mathematics and Statistics, Xidian University, Xi’an, China.

Campbell, Rutger

Research Fellow (2020.8.16-2025.8.15)

Ph.D. in Combinatorics and Optimization, Univ. of Waterloo (2020).
Ph.D. Advisor: Jim Geelen
Currently at the University of Waterloo, Waterloo, Canada.

Lee, Seunghun (이승훈)

Research Fellow (2025.7.1-2025.8.22)

Ph.D. in Mathematical Sciences, KAIST (2020).
Ph.D. Advisor: Andreas Holmsen
Currently, an assistant professor at the Department of Mathematics, Keimyung University, Daegu, Korea.

Hatzel, Meike

Research Fellow (2024.8.1-2025.9.30)

Ph.D. from Technische Universität Berlin (2022).
Ph.D. Advisor: Stephan Kreutzer
Currently, an assistant professor at the Department of Mathematics, TU Darmstadt, Germany.

Geniet, Colin

Research Fellow (2024.9.1-2026.8.31)

Ph.D. from ENS de Lyon (2024).
Ph.D. Advisor: Stéphan Thomassé
Currently, a post-doctoral fellow at the University of Warsaw, Poland.

Visiting Research Fellows

Choi, Jeong Ok (최정옥)

Visiting Research Fellow (2020.9.1-2021.8.31)

Associate Professor at the Department of Mathematical Sciences, GIST, Gwangju, Korea.
Ph.D. in Mathematics, the University of Illinois at Urbana-Champaign (2008).

Shin, Heesung (신희성)

Visiting Research Fellow (2020.9.1-2021.8.31)

Professor at the Department of Mathematics, Inha University, Incheon, Korea.
Ph.D. in Mathematical Sciences, KAIST (2007).

Yang, Hongseok (양홍석)

Visiting Research Fellow (2022.2.28-2023.2.24)

Previously, a Professor at the School of Computing, KAIST.
Currently, a Professor at the School of Computational Sciences, KIAS, Seoul, Korea.
Ph.D. in Computer Science, UIUC (2001).

Visiting Researchers

Kim, Ringi (김린기)

Visiting Researcher

Previously, a Research Assistant Professor at the Department of Mathematical Sciences, KAIST.
Currently, an Associate Professor at the Department of Mathematics, Inha University.
Advisor: Paul Seymour

Zhang, Xin (张欣)

Visiting Scholar (2019.8.1-2020.7.31)

Associate Professor of Xidian University, China.

Xu, Chuandong (徐川东)

Visiting Researcher (2023.6.21-2024.6.20)

Lecturer at Xidian University, Xian, China.

Students

Kang, Dong Yeap (강동엽)

Graduate Student ( – 2020.2)

Previously, a graduate student at the Department of Mathematical Sciences, KAIST, 2014.3-2020.2.
Currently, a post-doctral fellow at KAIST from July 2026.

Lee, Duksang (이덕상)

Graduate Student ( – 2022.12)

Previously, a graduate student at the Department of Mathematical Sciences, KAIST, 2018.3-2023.2.
Currently at Woowa Brothers.

Ahn, Jungho (안정호)

Graduate Student ( – 2023.8)

Previously, a graduate student at the Department of Mathematical Sciences, KAIST, 2018.3-2023.8.
Currently, an assistant professor at the Department of Computer Engineering, Inha University, Incheon, Korea.

Kim, Donggyu (김동규)

Graduate Student (2019.7-2025.2)

Previously, a graduate student at the Department of Mathematical Sciences, KAIST, 2019.3-2025.2.
Currently, an assistant professor at the Department of Mathematics, Hanyang University, Seoul, Korea.

Wee, Sounggun (위성군)

Graduate Student (2020.1-2023.2)

Previously, a graduate student at the Department of Mathematical Sciences, KAIST since Sep. 2019.

Overman, William

Visiting Student (2019.6 – 2019.8, 2021.3-2021.8)

Previously, an undergraduate student at California
Institute of Technology, -2020.6.
Currently, a graduate student at Stanford University.

Kook, Yunbum (국윤범)

Visiting Student (2020.7-2021.6)

Previously, an undergraduate student at the Department of Mathematical Sciences, KAIST since March 2015.
Currently, a graduate student at the Georgia Institute of Technology.