中科院数学与系统科学研究院
数学研究所
表示论研讨班
报告人： 胡 峻 教授（北京理工大学）
题 目：BGG category O and Z-graded representation theory（II）
时 间：2021.04.09（星期五），13:30-14:30
地 点：数学院南楼N226
摘 要：In this second talk of the series, we shall introduce the notion of indecomposable projective functors and their Z-graded versions in BGG category O. We shall discuss the categorification of the right regular H_v(W)-module using indecomposable projective functors, where H_v(W) is the Iwahori-Hecke algebra associated to W, and $v$ is an indeterminate. Finally, we shall describe the graded Koszul duality and graded Ringel duality for the regular blocks of the BGG category O.
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