报告题目 (Title)：Affine web and Schur categories
（仿射网与Schur范畴）
报告人 (Speaker)：宋林亮 副教授（同济大学）
报告时间 (Time)：2025年11月28日（周五）16:00-17:00
报告地点 (Place)：校本部F309
邀请人(Inviter)：黄红娣
主办部门：理学院数学系
报告摘要：Building on the polynomial web category, we introduce the affine web category, a diagrammatic monoidal category, along with its cyclotomic quotients. We establish connections with finite W-algebras in type A. Utilizing the affine web category as a foundational element, we further develop the affine Schur category. The cyclotomic Schur categories provide the first diagrammatic presentation of the (degenerate) Dipper-James-Mathas cyclotomic Schur algebras. Basis theorems for all these categories will be presented. This is joint work with Weiqiang Wang.
