Talks

Invited Talks at Workshops and Conferences

• 2023/12/27 An Eisenbud-Goto type inequaltiy for Stanley-Reisner ideals and simplicial complexes
  The 29th KIAS Combinatorics Workshop, Busan, South Korea

• 2023/11/04 Transversal numbers of stacked spheres
  2023 KSIAM Annual Meeting  - Special session on Geometric and Topological Combinatorics, Gwangju, South Korea

• 2023/10/28 The Leray number and the Castelnuovo-Mumford regularity
  KMS Special Conference with 2022 Field Medalists - Focus session on Combinatorics and Algebraic Geometry, Seoul, South Korea

• 2023/07/19 Transversal numbers of stacked spheres
  The Korea-Taiwan-Vietnam Joint Meeting on Discrete Geometry and Geometric Measure Theory, Hanoi, Vietnam

• 2022/02/23 The homopoty type of the independence complex of graphs with no induced cycles of length divisible by $3$
  The 24th KIAS Combinatorics Workshop, Busan, South Korea

• 2021/04/28 The homotopy type of the independence complex of graphs with no induced cycles of length divisible by $3$
  Build a network of young researchers in mathematics (2021 KMS Symposium)

• 2020/07/16 Domination numbers and noncover complexes of hypergraphs
  CoSP Zoom Seminar on Topological Combinatorics

• 2019/07/26  Collapsibility of non-cover complexes of graphs
  CoSP Workshop and School on Topological Methods, Charles University, Prague, Czech Republic

• 2019/01/24  A sharp Ore-type condition for a connected graph with no induced star to have a Hamiltonian path
  Korean Early Career Researcher Workshop in Combinatorics, Suwon, South Korea

• 2018/07/27  Word-representability of Toeplitz graphs
  The 5th International Conference on Riordan Arrays and Related Topics, Pusan, South Korea

Contributed Talks

• 2022/04/28 Independent domination of graphs with bounded maximum degree
  2022 KMS Spring Meeting (online)

• 2021/09/06 Independence complexes of ternary graphs
  Eurocomb 2021 (online)

• 2020/10/23 Rainbow paths and rainbow matchings in graphs
  2020 KMS Annual Meeting (online)

Seminar Talks

• 2023/03/15 Collapsibility of non-cover complexes of graphs, and the minimal exclusion sequence
  Moscow-Beijing Topology Seminar (online)

• 2022/05/24 Fractional Helly theorem for Cartesian products of convex sets
  Topology and Combinatorics seminar at Ajou University (online)

• 2022/02/15 Independent domination of graphs with bounded maximum degree
  IBS Discrete Mathematics Seminar, Daejeon, South Korea

• 2021/09/27 The homotopy type of the independence complex of ternary graphs
  SCMS Combinatorics Seminar (online)

• 2020/12/22 On a conjecture by Kalai and Meshulam the Betti number of the independence complex of ternary graphs
  IBS Discrete Mathematics Seminar, Daejeon, South Korea

• 2020/09/22 Collapsibility of non-cover complexes of graphs
  IBS Discrete Mathematics Seminar, Daejeon, South Korea

• 2019/01/02  A sharp Ore-type condition for a connected graph with no induced star to have a Hamiltonian path
  Technion Combinatorics Seminar, Haifa, Israel

Poster Presentations

• 2020/07/15  Noncover complexes, Independence complexes, and domination numbers of hypergraphs  (Poster)
  FPSAC 2020 online

Lectures

• 2022/08/01-03 Topological Combinatorics, Summer school 2022 Frontiers of Combinatorics (hosted by Shandong University & IBS ECOPRO)
  - Lecture 1: Homotopy, Homology, Nerve theorem, good cover, Topological Helly
  - Lecture 2: Three basic tools in topological combinatorics and their equivalence: Brouwer Fixed-Point Theorem/Sperner's Lemma/KKM Theorem
  - Lecture 3: Brouwer implies weak Sperner, and applications of KKM theorem: (p,q)-Theorem/Line transversal/Colorful KKM Theorem