Talks


2014

  • April 18, 2014: Colloquium, Department of Mathematics, POSTECH, Pohang.
    • Ramsey-type theorem for graphs without splits
  • March 13, 2014: Colloquium, Department of Mathematics, Sogang University, Seoul.
    • Ramsey-type theorem for graphs without splits
  • March 8, 2014: 3rd KIAS Combinatorics Workshop, KIAS, Seoul.
    • Unifying duality theorems for width parameters
  • January 28, 2014: Working Group Seminar, University of Hamburg, Hamburg, Germany (with Reinhard Diestel)
    • Unifying duality theorems for width parameters in finite graphs
  • January 14, 2014: Working Group Seminar, University of Hamburg, Hamburg, Germany
    • Hyperbolic surface subgroups of one-ended doubles of free groups

2013

2012

2011

  • December 14, 2011: The Second Bertinoro Workshop on Algorithms and Graphs, Bertinoro, Italy.
    • Rank-width and well-quasi-ordering of skew-symmetric or symmetric matrices
  • November 8, 2011: Robin Thomas Fest, Charles University, Prague, Czech.
    • Rank-width and well-quasi-ordering of skew-symmetric or symmetric matrices
  • October 18, 2011: Seminar, Department of Computer Science and Engineering, Seoul National University, Seoul.
    • Vertex-minors, Monadic Second-Order Logic, and a Conjecture by Seese
  • September 2, 2011: European Conference on Combinatorics, Graph Theory, and Applications (Eurocomb), Budapest, Hungary.
    • Rank-width and well-quasi-ordering of skew-symmetric or symmetric matrices
  • August 18, 2011: Combinatorics Workshop (2011 조합론 학술대회), Kangwon National University, Chuncheon.
    • Computing Rank-width Exactly
  • August 4, 2011: 2011 초등 수학과학 영재교사 직무연수, 충남대학교 과학영재교육원, Choongnam National University, Daejeon.
    • 4색 정리 이야기 (Story on Four Color Theorem)
  • June 28, 2011: Noon Lecture, Department of Applied Mathematics (KAM), Charles University, Prague.
    • Vertex-minors and pivot-minors of graphs
  • June 10, 2011: Special Department Seminar, Department of Mathematics, Yeungnam University, Kyoungsan.
    • A survey on vertex-minors and pivot-minors
  • April 29, 2011: Special Session on Graph Theory, Korean Mathematical Society Spring Meeting, Korea University, Seoul.
    • Rank-width and Well-quasi-ordering of Skew-symmetric or Symmetric Matrices
  • April 19, 2011: 자연과학대학 대중강연 (Public Lecture of College of Natural Science), KAIST.
    • 4색정리 이야기 (Story on Four Color Theorem)
  • April 11, 2011: 유학준비생을 위한 강연, KAIST.
  • February 16, 2011: Graph Algorithm and Combinatorial Optimization, NII Shonan Meeting, Shonan Village Center, Japan.
    • Rank-width and Well-quasi-ordering of Skew-symmetric or Symmetric Matrices

2010

2009

2008

2007

2006

2005

2004

2003