Sang-hyun Kim

About

I am Professor and Chair in the School of Mathematics at Korea Institute for Advanced Study (KIAS). I also hold an adjunct professorship at KAIST. Before joining KIAS in 2019, I worked at Seoul National University, KAIST, Tufts University, the University of Texas at Austin and MSRI. I received a Ph.D in 2007 at Yale University under the supervision of Andrew Casson.

My research interests focus on the interplay between geometric group theory and low--dimensional topology, particularly motivated by right-angled Artin groups and manifold diffeomorphism groups. I was selected as the Scientist of the Month (July 2020) by the Korean Ministry of Science and ICT.

Web kimsh.kr
Email kimsh@kias.re.kr

skim.math@gmail.com

Seminar https://visgat.kimsh.kr
Profiles arXiv MathSciNet ORCiD KIAS
CV (2023)

Current event organized

KIAS-KAIST Workshop on Current Challenges in Mathematics, August 25 - 28 (Mon-Thur), 2025.
- Registration closes on August 1.
- Colloquia and invited talks by
  - Inhyeok Choi, Cornell University, USA
  - June E Huh, Princeton University, USA
  - Ji Oon Lee, KAIST, South Korea
  - Yair Minsky, Yale University, USA
  - Jinyoung Park, Courant Institute of Mathematical Sciences NYU, USA
  - Youngtak Son, Brown University, USA
  - Michel Talagrand, French National Center for Scientific Research (CNRS), France
Mapping Class Groups @ KIAS, October 13 - 17 (M-Fr), 2025

Selected Work

(With Thomas Koberda and Javier de la Nuez-Gonzalez) First order rigidity of homeomorphism groups of manifolds, Comm. Amer. Math. Soc. 5 (2025), 144-194. [ArXiv] [Journal]
(With Thomas Koberda) Diffeomorphism groups of critical regularity. Inventiones mathematicae (2020). [pdf] [journal page]
(With Thomas Koberda and Yash Lodha) Chain groups of homeomorphisms of the interval and the circle, Annales Scientifiques de l'École Normale Supérieure (2019) [Link]
(With Hyungryul Baik and Thomas Koberda) Unsmoothable group actions on compact one-manifolds, Journal of European Mathematical Society (2019) [Link]
(With Genevieve Walsh) Coxeter groups, hyperbolic cubes, and acute triangulations, Journal of Topology (2016) [Link]
(With Thomas Koberda) Embedability between right-angled Artin groups, Geometry & Topology (2013) [Link]

Distinction

The Choi Seok-jeong Award (올해의 최석정상), Korean Ministry of Science and ICT, November 2023. [news] [ceremony]
The Scientist and Engineer of the Month (이달의과학기술인상), Korean Ministry of Science and ICT, July 2020.
Y-KAST Member (한국차세대과학기술 한림원), Korean Academy of Science and Technology (KAST), Feb 26, 2018 - present.
Research Excellence Award (우수연구상), College of Natural Sciences, Seoul National University, March 3, 2017.
Excellent Paper Award (논문상), Korean Mathematical Society, April 23, 2016.For the work: (With Thomas Koberda), Embedability between right-angled Artin groups, Geometry & Topology 17 (2013) 493--530.
Teaching Excellence Award (우수강의상), College of Natural Sciences, Seoul National University, September 15, 2015.²An award first established in September 2015. Based on recommendations by students council, faculty committee and course survey.
Creative Teaching Grand Award, KAIST, February 15, 2013.
Sang-San Prize for Young Mathematicians, Korean Mathematical Society, October 5, 2012.
Silver medal, the 34th International Mathematical Olympiad, Turkey, 1993.

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