Seunghun Lee (이승훈) gave a talk on the transversal number and the chromatic number of hypergraphs consisting of facets of a simplicial sphere at the Discrete Math Seminar

On January 4, 2022, Seunghun Lee (이승훈) from the Binghamton University gave a talk at the Discrete Math Seminar on the transversal number and the chromatic number of hypergraphs whose edges are facets of a simplicial sphere. The title of his talk was “Transversals and colorings of simplicial spheres“.

Tuan Tran gave a talk on the volume of the intersection of two balls in a metric space with applications at the Discrete Math Seminar

On December 14, 2021, Tuan Tran from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on sufficient conditions for balls in a metric space to have small intersection and their applications. The title of his talk was “Exponential decay of intersection volume with applications on list-decodability and sphere-covering bounds“.

Eun-Kyung Cho (조은경) gave a talk on the minimum independent dominating set at the Discrete Math Seminar

On December 7, 2021, Eun-Kyung Cho (조은경) from the Hankuk University of Foreign Studies gave a talk at the Discrete Math Seminar on various upper bounds for the minimum independent dominating set (or, the minimum maximal independent set) in a graph. The title of her talk was “Independent domination of graphs with bounded maximum degree“.

Seonghyuk Im (임성혁) gave a talk on the existence of a large complete topological minor in a graph without small dense subgraphs at the Discrete Math Seminar

On November 30, 2021, Seonghyuk Im (임성혁) from KAIST gave a talk at the Discrete Math Seminar on the existence of a large complete topological minor in a graph of bounded average degree when the graph has no small dense subgraphs. The title of his talk was “Large clique subdivisions in graphs without small dense subgraphs“.