Special session "Number theory and Dynamics" 2019 KMS Fall meeting (October 25-27, 2019)
Number theory and dynamics (July 15-19, 2019) (organized by Dong-Han Kim, and Sanghoon Kwon)
KIAS research station, Incheon, Korea (June 19-23, 2017) (organized by Dong-Han Kim, and Sanghoon Kwon)
Workshop on Diophantine Approximation and homogeneous dynamics, Jeju, Korea (June 15-18, 2017) (organized with Dong Han Kim)
Geometric Topology Fair, Daejeon, Korea (July 5-9, 2016) (organized with Sang-hyun Kim, Kihyung Ko, and Sangjin Lee)
Geometric Topology Fair, Gyeongju, Korea (August 9-13, 2015) (organized with Sang-hyun Kim, Kihyung Ko, and Sangjin Lee)
2015 CIMPA-NIMS Research School, Daejeon, Korea (May 25- June 3, 2015) (organized with Ana Rechtman, Felix Schlenk, Otto van Koert, and Urs Frauenfelder).
Scientific committee of Young Geometric Group Theory IV, Belgium, Jan 2015 (led by Michelle Bucher-Karlsson).
Geometry on groups and spaces (Satellite conference of ICM), KAIST, Daejeon (August 7 – 12, 2014) (organized with S. Choi, I. Kim, S. Kim, K. Ko, T. Koberda)
KIAS Summer School on Homogeneous Dynamics, KIAS, Seoul (July 2-6, 2013) (organized with Emmanuel Breulliard, Dmitry Kleinbock, and Hee Oh).
First Joint International Meeting of the AMS and the Korean Mathematical Society, Seoul (December 16-20, 2009). A special session in geometric group theory and low-dimensional topology (and Lie groups).
AIM Workshop: Volume Entropy Rigidity, Zurich (June 2009).
AMS Western Section Meeting, Special Session on Recent Progress in Geometric Group Theory, San Francisco (April 2009) (Session associated to the invited address of K. Vogtmann).