Dear all, we will have Monday's Lecture again with Colloquium on November 1. You all are cordially invited! Please note Corona restrictions ! - See rules in detail below ! Location: Freie Universität Berlin Takustr. 9 14195 Berlin
Time: Monday, November 1st - 14:15 h Title: Topological methods in graph theory Abstract:When we study the structure of a graph, we encounter parameters that are local (such as the clique number) and parameters that are global (such as the chromatic number). Topology provides tools to measure global phenomena. I will explain the hidden topology of the global structure of graphs for problems such as chromatic numbers, covering and matching problems, and partitions into independent sets with various constraints. Coffee Break Monday's Colloquium: Letícia Mattos (Freie Universität
Berlin) Time: Monday, November 1st - 16:00 h s.t. Title: Singularity of random symmetric matrices Abstract: We developed an inverse Littlewood-Offord theorem in Z^n_p that
applies under very mild conditions and made progress towards this
conjecture, showing that the probability is bounded by
exp(-c\sqrt{n}).
Joint work with Marcelo Campos, Robert Morris and Natasha
Morrison.
___________ Corona access rules: Please observe the current Corona safety constraints: 3G access rule - a medical or FFP2 mask must be worn! See https://www.fu-berlin.de/en/sites/coronavirus/faq/studium/3g/ Please bring a proof of your vaccination status or test by a certified unit, as well as a photo-ID. We will regularly open the windows for fresh air. Please choose your clothing accordingly! For tracking the contacts in case of an infection, we use a.nwesen.de. See https://anwesende.imp.fu-berlin.de/ There is a QR-code at every place, which you can scan with your smartphone. You all are cordially invited! |