Cohomology of $BP{U}_n$ and rings of invariants of Weyl groups

Feifei Fan, Jiaxi Zha, Zhilei Zhang +1

Let $P{U}_n$ denote the projective unitary group of rank $n$ and $BP{U}_n$ be its classifying space, for $n>1$. Using the Serre spectral sequence associated to the fibration $BU_n\to B…