中科院数学与系统科学研究院
数学研究所
学术报告会
报告人： 古 星 博士 (墨尔本大学)
题 目：the topological period-index problem over 8-complexes
时 间：2017.07.04（星期二），14:30-15:30
地 点：数学院南楼N913室
摘 要：We study the Postnikov tower of the classifying space of a compact Lie group P(n;mn), which gives obstructions to lifting a topological Brauer class of period n to a PU_mn-torsor, where the base space is a CW complex of dimension 8. Combined with the study of a twisted version of Atiyah-Hirzebruch spectral sequence, this solves the topological period-index problem for CW complexes of dimension 8.
