Semiclosed projections and applications

2019/11/11 by Contino, Maximiliano, Maestripieri, Alejandra, Marcantognini, Stefania
#FOS: Mathematics #Functional Analysis (math.FA)

paper · doi:10.48550/arxiv.1911.04251

Abstract

We characterize the semiclosed projections and apply them to compute the Schur complement of a selfadjoint operator with respect to a closed subspace. These projections occur naturally when dealing with weak complementability.

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