On January 23, 2024, Zichao Dong from the IBS Extremal Combinatorics and Probability Group gave a talk at the Discrete Math Seminar on a d-dimensional analog of a variation of the Erdős-Szekeres problem among n points of bounded pairwise distances. The title of his talk was “Convex polytopes in non-elongated point sets in R^d“.
Matthew Kroeker gave a talk on the average number of points on affine subspaces determined by points at the Discrete Math Seminar
On January 16, 2024, Matthew Kroeker from the University of Waterloo gave a talk at the Discrete Math Seminar on the average number of points on planes (or affine subspaces) determined by points. The title of his talk was “Average flat-size in complex-representable matroids“.
Jinyoung Park (박진영) gave a talk on the number of antichains of subsets of an n-element set at the Discrete Math Seminar
On January 11, 2024, Jinyoung Park (박진영) from NYU gave a talk at the Discrete Math Seminar on the number of antichains of subsets of an n-element set. The title of her talk was “Dedekind’s Problem and beyond“.
Daniel McGinnis gave a talk on applications of the KKM theorem to various problems in discrete geometry at the Discrete Math Seminar
On January 2, 2024, Daniel McGinnis from Iowa State University gave a talk at the Discrete Math Seminar on applications of the KKM theorem to various problems in discrete geometry. The title of his talk is “Applications of the KKM theorem to problems in discrete geometry“.
Shengtong Zhang (张盛桐) gave a talk on the minimum number of triangles in a $K_t$-Ramsey graph at the Discrete Math Seminar
On December 19, 2023, Shengtong Zhang (张盛桐) from Stanford University gave a talk at the Discrete Math Seminar on the minimum number of triangles in a $K_t$-Ramsey graph. The title of his talk was “Triangle Ramsey numbers of complete graphs“.
Ting-Wei Chao (趙庭偉) gave a talk on the number of points that are intersections of d linearly independent lines among given n lines in the d-dimensional space at the Discrete Math Seminar
On December 12, 2023, Ting-Wei Chao (趙庭偉) from Carnegie Mellon University gave a talk at the Discrete Math Seminar on the number of points that are intersections of d linearly independent lines among given n lines in the d-dimensional space. The title of his talk was “Tight Bound on Joints Problem and Partial Shadow Problem“.
Ben Lund gave a talk on the existence of an embedding of every almost spanning tree with specified distances of edges into a finite vector space at the Discrete Math Seminar
On December 4, 2023, Ben Lund from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on the existence of an embedding of every almost spanning tree with specified distances of edges into a finite vector space. The title of his talk was “Almost spanning distance trees in subsets of finite vector spaces.”
Hyunwoo Lee (이현우) gave a talk on the existence of a Steiner triple system in a 3-uniform hypergraph with large minimum codegree at the Discrete Math Seminar
On November 28, Hyunwoo Lee (이현우) from KAIST and IBS Extremal Combinatorics and Probability Group gave a talk at the Discrete Math Seminar on the existence of a Steiner triple system in a 3-uniform hypergraph with large minimum codegree. The title of his talk was “Towards a high-dimensional Dirac’s theorem“.
Seunghun Lee (이승훈) gave a talk on the existence of hypergraphs embeddable in ℝ^d with large chromatic number at the Discrete Math Seminar
On November 20, 2023, Seunghun Lee (이승훈) from the Hebrew University of Jerusalem gave a talk at the Discrete Math Seminar on the existence of k-uniform hypergraphs embeddable in ℝ^d with large chromatic number. The title of his talk was “On colorings of hypergraphs embeddable in R^d.”
- Due to technical issues, some portions of the videos were not adequately recorded on YouTube.
Bruce A. Reed gave a talk on finding every k-vertex tree as a minor in a graph of large minimum degree and large maximum degree at the Discrete Math Seminar
On November 7, 2023, Bruce A. Reed from the Academia Sinica, Taiwan gave a talk at the Discrete Math Seminar on the existence of every k-vertex tree as a minor in a graph with certain lower bounds on the minimum degree and the maximum degree. The title of his talk was “Some Variants of the Erdős-Sós Conjecture“.