Professor, School of Mathematics, Korea Institute for Advanced Study (KIAS)
Adjunct Professor, Department of Mathematical Sciences, KAIST
Research interest geometric group theory and low-dimensional topology:
hyperbolic group, mapping class group, right-angled Artin group, diffeomorphism group, acute triangulations
Rigidity and Regularity of Diffeomorphism Groups (RRDG 2020), KIAS, Seoul, Korea, postponed to a later year.
(With Thomas Koberda) Diffeomorphism groups of critical regularity.
Inventiones mathematicae (2020).
(With Thomas Koberda and Yash Lodha), Chain groups of homeomorphisms of the interval and the circle.
Annales Scientifiques de l'École Normale Supérieure, Series (2019)
(With Hyungryul Baik and Thomas Koberda), Unsmoothable group actions on compact one-manifolds.
Journal of European Mathematical Society (2019)
(With Genevieve Walsh), Coxeter groups, hyperbolic cubes, and acute triangulations.
Journal of Topology (2016)
(With Thomas Koberda), Embedability between right-angled Artin groups.
Geometry & Topology (2013)