Products of two orthogonal projections

Published 4 Nov 2024 in math.FA, math.CV, and math.OA | (2411.01831v2)

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.

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