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 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“.