Semiclosed projections and applications
Functional Analysis
2021-04-21 v3
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.
Cite
@article{arxiv.1911.04251,
title = {Semiclosed projections and applications},
author = {Maximiliano Contino and Alejandra Maestripieri and Stefania Marcantognini},
journal= {arXiv preprint arXiv:1911.04251},
year = {2021}
}