Activities
Positions
- Professor, Korea Institute for Advanced Study, 2019 - present.
- Adjunct Professor (joint appointment), Department of Mathematical Sciences, KAIST , 2019 - present.
- Seoul National University (Associate Professor), 2014 - 2018.
- KAIST (Assistant, Associate Professor), 2011 - 2014.
- Tufts University (Norbert Wiener Assistant Professor), 2010 - 2011.
- the University of Texas at Austin (R. H. Bing Instructor), 2008 - 2010.
- Mathematical Sciences Research Institute, 2007.
Students mentored
- Hyunsu Park (SNU Master's 2016 - 2020)
- Donggyun Seo (SNU PhD 2013 - 2020, KIAS Mar 2020 - Aug 2020)
Outreach
- Vietnam Polymath REU Program, Oct 2023 - Oct 2024 [Link]
- REU Workshop at VIASM, July 2024.
- Great Minds, EBS : consulting for translating the five lectures of Professor Ian Stewart
Journals
- Editor, Journal of Korean Mathematical Society (2019 - ), [link]
- Editor, KIAS Springer Series in Mathematics (2021 - ), [link] Vol. 1. Recent Progress in Mathematics
- Editor, Horizon : a KIAS Webzine for promotion of science awareness in public (2022 - 2024), [intro] [link]
Committee works
- KIAS PR Committee, 2025 - present.
- KIAS Transdisciplinary Research, Program Committee, 2023 - present.
- KIAS Labor--Management Committee, KIAS, 2020 - 2025.
- Steering Committee, Center for Mathematical Challenges, KIAS, 2021 - present.
- Steering Committee, AI Center for Basic Sciences, KIAS, 2020 - present.
- Research Output Analysis Committee (성과분석위원), National Research Foundation of Korea, 2020 - 2022.
- Review Board (전문위원, 분야별 지원체계 자문위원회), National Research Foundation of Korea, 2018 - present.
- Steering Committee, Seoul Science High School (2018.3 - 2020.2)
- Topology Committee, Korean Mathematical Society (2023 - )
- Executive board member, Korean Mathematical Society (2013 - 2014)
- Korean Mathematical Olympiad (KMO) Committee, 2013 - present.
Conference Organization
Dynamical Group Theory (conference series) [Link]
- France-Korea workshop on Dynamical Group Theory (Dynamical Group Theory VIII), Jan 6 - 8, 2026.
- Dynamical Group Theory VII, November 25 - 27, 2025.
- KAIST-KIAS Workshop II, November 13 - 14, 2025.
- Mapping Class Groups @KIAS, October 13 - 17, 2025.
- Dynamical Group Theory VI, September 18, 2025.
- Current Challenges in Mathematics, August 25 - 29, 2025.
- Dynamical Group Theory V, November 19 - 22, 2024.
- Dynamical Group Theory IV, September 25 - 28, 2024.
- New Methods in Group Actions on Manifolds (Dynamical Group Theory III), August 13 - 16, 2024.
- Dynamical Group Theory II, Feb 29, 2024. [Link]
- Dynamical Group Theory I, September 27 - 28, 2023. [Link]
Organizing Committee
- Mapping Class Groups @ KIAS, October 13 - 17, 2025
- Current Challenges in Mathematics, August 25 - 28, 2025.
Colloquia and invited talks by: Inhyeok Choi, June E Huh, Ji Oon Lee, Yair Minsky, Jinyoung Park, Youngtak Son, Michel Talagrand. - 2K-Gate I, June 10 - 13, 2025. [Link]
- Korean Mathematical Society Fall Meeting, Topology I Session, Oct 22-23, 2025.
- Korean Mathematical Society Fall Meeting, Special Session on Geometric Group Theory, Oct 25-26, 2024.
- KIAS Graduate Student Meeting in Pure Mathematics, October 21st, 2024.
- Semigroups, groupoids and C*-algebras, July 1 - 5, 2024.
- Hyperbolic Geometry of Numbers, Dec 18 - 20, 2023. [Link]
- The 4th Korea-France Conference in Mathematics, KIAS, August 21 - 25, 2023. [Link]
- Workshop on topological data analysis: mathematics, physics and beyond, KIAS, Feb 8 - 10, 2023
- PK² Topology Workshop: Fall 2022 (Nov 1-4), Spring 2022 (May 29-June 1).
- The 6th Korea Toric Topology Workshop, KAIST, July 11 - 13, 2022.
- East Asian Conference on Geometric Topology (EACGT 2022), KIAS.
- One-dimensional actions of 3-manifold groups, Dijon, France, Nov 4 - 8, 2019.
- Combinatorial and algebraic aspects of geometric structures, Chiang Mai, July 18 - 26, 2019.
- GAGTA-2018, Seoul, Korea (2018)
- IBS Undergraduate Mathematics Festival, 2015.
- East Asian Conference on Algebraic Topology 6 (EACAT-6), Daejeon, Korea, 2015.
- Geometric Group Theory Workshop, Jeju Island, Korea, Jan 22 - 24, 2015.
- Geometry on Groups and Spaces (ICM 2014 Satellite), Daejeon, Korea, 2014
- KAIST Geometric Topology Fair, 2011 - 2013 (annual)
Scientific / Steering / Program Committee
- Young Geometric Group Theory (yGGT) XIV, June 8 - 12, 2026
- GAGTA Steering Committee, 2023 - present.
- Young Geometric Group Theory XII, Bristol, UK, 8 - 12 April 2024.
- GAGTA2023, Vienna, Austria, July 17 - 21, 2023.
- East Asian Conference of Geometric Topology, 2019 - present.
- yGGT-2024 (Bristol, UK), yGGT-2019 (Bilbao, Spain).
- Workshop on Groups, Geometry and Dynamical System, Montevideo, Uruguay (2018)
Hyundai Group
August 2025.
Teaching History
Seoul National University
Algebraic Structure of Diffeomorphism Groups (Spring 2018). Dynamics on the Circle (Spring 2016). Geometry on Infinite Groups (Fall 2014). Mathematics and recitation 1, 2 (Spring/Fall 2014). Calculus 1 and 2 (Spring/Fall 2015, 2018). Topology 1, 2 (Spring/Fall 2015). Mathematics for Biology 1, 2 (Spring/Fall 2016). Algebraic Topology 1 (Fall 2016, 2018).
KAIST
Groups and Dynamics (Spring 2022). Education 3.0 Calculus I (Spring 2012, 2013). Education 3.0 Calculus II (Fall 2012). Algebraic Topology I (Spring 2013). Groups, Graphs and Geometry (Spring 2012). Calculus II (Fall 2011). Freshman Seminar (Fall 2011).
Tufts University
Calculus II (Fall 2010). Calculus III (Fall 2010, Spring 2011).
The University of Texas at Austin
Differential and Integral Calculus I (Spring/Fall 2008, Fall 2009). Differential and Integral Calculus II (Spring 2010). Introduction to Number Theory (Summer 2009). Probability I (Summer 2008, Spring 2009). Discrete Mathematics (Spring 2008). Topics in Geometric Group Theory (Spring 2010).
Yale University
Calculus of Functions of One Variable (2006, 2007). Introduction to Functions of Several Variables (2006). Calculus of Functions of Several Variables (2001-2006).