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School of Mathematics

Choi, Inhyeok

Professor

Geometric group theory, measured group theory


I study how randomness and geometry interact in discrete groups, such as mapping class groups, hyperbolic and acylindrically hyperbolic groups, CAT(0) groups, and Anosov groups. I showed that hyperbolic-like (or Morse) elements are generic in such groups with respect to random walks and counting problems. I am also interested in the dynamics of group actions arising in geometric topology, such as the mapping class group action on the space of measured laminations. More recently, I have been studying measured group theory, concerning various invariant measures from group actions as well as percolation on groups.



B.Sc. in Physics, KAIST, August 2018

Ph.D. in Mathematics, KAIST, February 2023

Project research fellow, June E Huh Fellow, KIAS, March 2023-June 2024

Harry Kesten Asisstant Professor, Cornell University, July 2024-August 2025

KIAS Fellow, Professor, KIAS, August 2025-present

Sangsan Young Mathematician Prize, the Korean Mathematical Society, 2025

Dissertation of the Year, S-OIL Science Prodigy and Culture Foundation, 2024

  • Office: 1438 / TEL) 82-2-958-3851 /
  • School of Mathematics, Korea Institute for Advanced Study
  • 85 Hoegiro Dongdaemun-gu, Seoul 02455, Republic of Korea.