Products of two orthogonal projections
arXiv:2411.01831
Abstract
We study operators that are products of two orthogonal projections. Our results complement some of the classical results of Crimmins and von Neumann. Particular emphasis has been given to projections associated with inner functions defined on the polydisc.
arXiv comment21 pages. Revised. Corrected. To appear in the Journal of Operator Theory