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arXiv · 1911.04251

Semiclosed projections and applications

Maximiliano Contino·Alejandra Maestripieri·Stefania Marcantognini
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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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Maximiliano Contino, Alejandra Maestripieri, Stefania Marcantognini. 2019-11-11. Semiclosed projections and applications. https://arxiv.org/abs/1911.04251

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