Absolutely Flat Idempotents

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

A real $n$-by-$n$ idempotent matrix $A$ with all entries having the same absolute value is called {\it absolutely flat}. We consider the possible ranks of such matrices and herein characterize the triples: size, constant, and rank for which such a matrix exists. Possible inequivalent examples of such matrices are also discussed.
11 pages, Electronic Journal of Linear Algebra

Keywords

Operator Algebras, 15A21,15A24,05A15,46B20

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/75030

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0504572
 http://arxiv.org/abs/math/0504572

Collections

arXiv