On January 25, 2022, O-joung Kwon (권오정) from the Incheon National University / IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on upper bounds of the twin-width and reduced-bandwidth of planar graphs and H-minor-free graphs at the Discrete Math Seminar. The title of his talk was “Reduced bandwidth: a qualitative strengthening of twin-width in minor-closed classes (and beyond)“.
On January 18, 2022, Jaehyeon Seo (서재현) from KAIST gave a talk at the Discrete Math Seminar on the rainbow Turán problem for color-critical graphs. The title of his talk was “A rainbow Turán problem for color-critical graphs“.
On January 13, 2022, Ron Aharoni from the Technion gave an online talk at the Virtual Discrete Math Colloquium on a stronger version of the Caccetta-Haggkvist conjecture and recent results. The title of his talk was “A strong version of the Caccetta-Haggkvist conjecture“.
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“.
On January 3, 2022, Dabeen Lee from the IBS Discrete Mathematics Group received the Excellence Award from the president of IBS. Congratulations!