The cohomology of projective unitary groups
arXiv:1710.09222 · doi:10.1134/S0081543824040084
Abstract
The projective unitary group PU(n) is the quotient of the unitary group U(n) by its center. We compute the integral cohomology ring of PU(n) using explicit constructed generators.
24 pages, to appear in Proceedings of the Steklov Institute of Mathematics