Absolutely Flat Idempotents
Operator Algebras
2007-05-23 v1
Abstract
A real -by- idempotent matrix 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.
Keywords
Cite
@article{arxiv.math/0504572,
title = {Absolutely Flat Idempotents},
author = {Jonathan M. Groves and Yonatan Harel and Christopher J. Hillar and Charles R. Johnson and Patrick X. Rault},
journal= {arXiv preprint arXiv:math/0504572},
year = {2007}
}
Comments
11 pages, Electronic Journal of Linear Algebra