Range additivity, shorted operator and the Sherman-Morrison-Woodbury formula
Functional Analysis
2014-09-09 v1
Abstract
We say that two operators A, B have the range additivity property if R(A + B) = R(A) + R(B). In this article we study the relationship between range additivity, shorted operator and certain Hilbert space decomposition known as compatibility. As an application, we extend to infinite dimensional Hilbert space operators a formula by Fill and Fishkind related to the well-known Sherman-Morrison-Woodbury formula.
Keywords
Cite
@article{arxiv.1409.1958,
title = {Range additivity, shorted operator and the Sherman-Morrison-Woodbury formula},
author = {M. Laura Arias and Gustavo Corach and Alejandra Maestripieri},
journal= {arXiv preprint arXiv:1409.1958},
year = {2014}
}