기초과학연구원 이산수학그룹
On August 24, 2021, Eun Jung Kim (김은정) from LAMSADE, CNRS gave a talk at the Discrete Math Seminar on an approximation algorithm for finding the minimum weight vertex set hitting all bonds of size at least k in a graph. The title of her talk was “A Constant-factor Approximation for Weighted Bond Cover“.
On August 18, 2021, Petr Hliněný from the Masaryk University, Czech gave an online talk at the Virtual Discrete Math Colloquium on a linear upper bound of the twin-width of a partially ordered set in terms of the poset width. The title of his talk is “Twin-width is linear in the poset width“.
On August 17, 2021, Linda Cook from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on (1) a polynomial-time algorithm to detect long even holes and (2) a structure of graphs with no holes of length≠𝓁 for a fixed 𝓁≥7. The title of her talk was “Two results on graphs with holes of restricted lengths“.
The IBS discrete mathematics group welcomes Dr. Linda Cook, a new research fellow at the IBS discrete mathematics group from August 1, 2021. She received her Ph.D. from the Program in Applied and Computational Mathematics at Princeton University under the supervision of Prof. Paul Seymour. She is interested in structural graph theory and its algorithmic applications.
On August 10, 2021, Duksang Lee (이덕상) from KAIST and IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar, showing that there are finitely many pivot-minor-minimal graphs preserving the rank connectivity between two fixed pairs of vertex sets. The title of his talk was “Intertwining connectivities for vertex-minors and pivot-minors“.
Pascal Gollin from the IBS Discrete Mathematics Group has been appointed as the IBS Young Scientist Fellow as of August 1, 2021. The title of his research proposal was “Structural questions for infinite graphs, digraphs, and matroids“. Congratulations!