The IBS Discrete Mathematics Group welcomes Hyungu Kim (김현구), a new graduate student of the Discrete Mathematics Group from July 1, 2025. He received his B.S. degree from KAIST and entered the Department of Mathematical Sciences at KAIST as a graduate student on March 2025. His advisor is Andreas Holmsen.
Mihyun Kang (강미현) gave a talk on the random subgraph of a hypercube and beyond at the Discrete Math Seminar
On July 8, 2025, Mihyun Kang (강미현) from the TU Graz gave a talk at the Discrete Math Seminar on the random subgraph of a hypercube and the Cartesian product of regular graphs. The title of her talk was “Phase transitions in a random subgraph of the hypercube“.
Sergey Norin gave a talk on the asympotic dimension of intersection graphs at the Discrete Math Seminar
On July 1, 2025, Sergey Norin from McGill University gave a talk at the Discrete Math Seminar on the asymptotic dimension of intersection graphs. The title of his talk was “Asymptotic dimension of intersection graphs“.
Welcome Seunghun Lee, a new member of the IBS Discrete Mathematics Group
The IBS Discrete Mathematics Group welcomes Dr. Seunghun Lee, a new research fellow at the IBS Discrete Mathematics Group starting July 1, 2025. He received his Ph.D. from KAIST in August 2020. He was a Robert Riley visiting assistant professor at Binghamton University in the USA from August 2020 to July 2022, a postdoctoral research fellow at Hebrew University of Jerusalem from August 2022 to January 2024, and a BK21 Research Assistant Professor at KAIST from 2024. Welcome!
Roohani Sharma has been appointed as the Young Scientist Fellow (YSF) of IBS
As of July 1, 2025, Roohani Sharma has been appointed as the IBS Young Scientist Fellow at the Discrete Mathematics Group. The title of her project is “Resolving Inconsistencies: Directed Cycles and beyond”. Congratulations!
Roohani Sharma gave a talk on the polynomial kernel for the problem of deleting vertices to make a graph $K_{2,p}$-minor-free at the Discrete Math Seminar
On June 25, 2025, Roohani Sharma from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on the polynomial kernel for the problem of deleting vertices to make a graph $K_{2,p}$-minor-free. The title of her talk was “Uniform and Constructive Polynomial Kernel for Deletion to $K_{2,p}$-Minor-Free Graphs“.
Attila Jung gave a talk on the quantative fractional Helly theorem at the Discrete Math Seminar
On June 17, 2025, Attila Jung from the Eötvös Loránd University, Hungary gave a talk at the Discrete Math Seminar on combining the fractional Helly theorem and the quantitative volume theorem on convex sets optimally. The title of his talk was “The Quantitative Fractional Helly Theorem“.
On-Hei Solomon Lo gave a talk on characterizing minor-minimal 3-connected non-Hamiltonian graphs at the Discrete Math Seminar
On June 10, 2025, On-Hei Solomon Lo from Tongji University in Shanghai gave a talk at the Discrete Math Seminar on characterizing minor-minimal 3-connected non-Hamiltonian graphs. The title of his talk was “Minors of non-hamiltonian graphs“.
Denys Bulavka gave a talk on the Erdős-Ko-Rado theorem for simplicial complexes at the Discrete Math Seminar
On June 4, 2025, Denys Bulavka from the Hebrew University of Jerusalem gave a talk at the Discrete Math Seminar on the maximum size of intersecting families of k-element facets in simplicial complexes. The title of his talk was “Strict Erdős-Ko-Rado Theorems for Simplicial Complexes“.
Meike Hatzel gave a talk on disproving Babai’s lonely coloring conjecture at the Discrete Math Seminar
On May 27, 2025, Meike Hatzel from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on the existence of a graph of arbitrary large girth and chromatic number admitting a proper edge coloring without a color appearing alone in any cycle. The title of her talk was “Counterexample to Babai’s lonely colour conjecture“.