3 papers
math.AT2024
Cohomology of and rings of invariants of Weyl groups
Feifei Fan, Jiaxi Zha, Zhilei Zhang +1
Let denote the projective unitary group of rank and be its classifying space, for . Using the Serre spectral sequence associated to the fibration $BU_n\to B…
math.AT2024
On the p-primary subgroups of the cohomology of the classifying spaces of PUn
Zhilei Zhang, Linan Zhong
Let denote the projective unitary group of rank , and let be its classifying space. We extend our previous results to a description of $H^s(BPU_n;\mathbb{Z})_{(p)…
math.AT2021
The -primary subgroups of the cohomology of in dimensions less than
Xing Gu, Yu Zhang, Zhilei Zhang +1
Let the projective unitary group of rank and its classifying space. For an odd prime , we extend previous results to a compete description of $H^s(BPU_n;\math…