报告人：桂弢（北京大学）
时间：2026年5月22、29日14:00-17:00
地点：5月22日：物质科研楼C1124
5月29日：东区五教5501
We give an introduction to the theory of Kazhdan--Lusztig--Stanley polynomials, which compute the graded dimensions of certain intersection cohomology groups even when the corresponding variety does not exist. These polynomials encode deep combinatorial and representation-theoretic information. Important examples arise from Coxeter groups, polytopes, and matroids. We will present some open conjectures in each of these settings.
