Keum (PhD, 1988, University of Michigan, USA) is professor at Korea Institute for Advanced Study (KIAS); president of the Korean Mathematical Society (KMS). He was: president of Korea Institute for Advanced Study; Chair of the Korean Mathematical Olympiad Committee; Member of the National Committee for Promotion of Basic Research; Member of the Presidium of Postech; Member of the Board of Directors, Institute for Basic Science (IBS); Member of the ICM 2014 Program Committee, International Mathematical Union (IMU); Member of the Advisory Board of Samsung Science and Technology Foundation (SSTF). His prizes include Medal in Basic Science 2018, National Academy of Sciences; Academic Award 2013, Korean Mathematical Society; Korea Science Prize 2008, awarded by the President of Korea. He is a member of the Korean Academy of Science and Technology (KAST).