Lehmer Codes and Poincaré Polynomials of Schubert Varieties in Types A and B
发布时间：2026年04月09日
浏览次数：20
发布者: He Liu
主讲人： Gaston Burrull （数学中心）
活动时间： 从 2026-04-10 15:00 到 15:45
场地： 北京国际数学研究中心，镜春园78号院（怀新园）77201室
I will begin with an introduction to the combinatorics of Bruhat orders in types A and B, including the role of Lehmer codes. I will then give an overview of Bolognini–Sentinelli's work characterizing the Poincaré polynomials of smooth Schubert varieties in type A. Finally, I will show how to extend this characterization to type B via the combinatorics of reflected bounded growth sequences.
