2018 Korea-Japan Workshop on Algebra and Combinatorics; Yeungnam University, Feb. 8-10, 2018
Colloquium; Incheon National University, Incheon, April 10, 2018
Colloquium; Ajou University, Suwon, May 11, 2018
Graph Theory Seminar; U. of Illinois, Urbana, U.S.A., Jan. 29, 2019
AMS Section Meeting #1147, Special Session on Structural Graph Theory; University of Hawaii at Manoa, Honolulu, HI, Mar 22-24, 2019
CanaDAM 2019, Mini Symposia on Average Graph Parameters; Vancouver, Canada, May 28-31, 2019
IBS-Discrete Math Seminar; Daejeon, June 19, 2019
CanaDAM 2021, Mini Symposia on Average Graph Parameters; Online, Canada, May 25-28, 2021
8th European Congress of Mathematics, Mini-Symposium on Spectral Graph Theory; Portoroz (and Online), Slovenia, June 20-26, 2021
IBS-Discrete Math Seminar; Daejeon, July 5, 2021
2021 Combinatorics Workshop; Yangpyeong, December 20-22, 2021
Colloquium; Sookmyoung Women's University, Seoul, April 29, 2022
24th Conference of the International Linear Algebra Society, Mini Symposium on Graph Spectra; Galway, Ireland, June 20-24, 2022
27th KIAS Combinatorics Workshop; Seoul, February 23-24, 2023
Colloquium; Hanyang University, Seoul, May 25, 2023
2nd China-Korea Young Scholar's Symposium on Discrete Mathematics; Nankai University, Tianjin, June 30, 2023
ICIAM 2023 Tokyo, Mini Symposium on Factors; Tokyo, Japan, August 20-25, 2023.
2024 International Seminar on Theoretical Computer Science, Kunming, China, January 5, 2024.
My research lies in graph theory, particularly, spectral graph theory, which is the interplay between graph theory and linear algebra. There are many different types of matrices from graphs like adjacency matrices, Laplacian matrices, etc., which are representations of graphs. In spectral graph theory, we concern with how linear algebra on those matrix representations like finding eigenvalues, etc., can be used to describe and interprete the underlying graph of that representation. This can be a useful way of thinking about graphs since it helps to classify graphs (according to their matrix representations) and since there are a lot of nice linear algebra results that can be translated to graphs that may not necessarily be clear by looking at the graph alone.
Research Interests: Spectral, Extremal, and Structural Graph Theory
Research Grants: In total: 426,155,000 KRW (PI) + 180,000,000 KRW (Co-PI)