Sang-hyun Kim

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A personal page of Sang-hyun Kim.

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About

Feb 2018. France
Mar 2018. Japan
Jun 2018. Turkey
Sep 2018. Germany

Research

We prove that for each real numbers a ≥ 2, there exists a finitely generated subgroup Ga of Diffa(S1) with the property that Ga admits no injective homomorphisms into Diffb(S1) for all b > a. For a > 2, there exists another fg group Ha that embeds into Diffb(S1) for all b < a, but not into Diffa(S1). One can further require the same properties are inherited to all finite index subgroups and to the commutator groups of Ga and of Ha. The commutator groups will be simple.
GAGTA-2018, Organizing/Scientific Committee, Seoul, Korea, Jul 16 - 20, 2018
Groups, Geometry and Dynamical Systems (ICM Satellite), Scientific Committee, Montevideo, Uruguay, July 23 - 27, 2018

Awards

  • Excellence in Research Award, College of Natural Sciences, Seoul National University, March 3, 2017.
  • Excellent Research Paper Award, Korean Mathematical Society, April 23, 2016.
For the work: (With Thomas Koberda), Embedability between right-angled Artin groups, Geometry & Topology 17 (2013) 493--530.
An 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.
  • Excellence Prize(s), College Mathematics Competition, Korean Mathematical Society, 1994 and 1995.
  • Silver medal, the 34th International Mathematical Olympiad, Turkey, 1993.

Notes