文章基本信息

标题：On Firmness of the State Space and Positive Elements of a Banach Algebra
作者：Robin S. Havea
期刊名称：Journal of Universal Computer Science
印刷版ISSN：0948-6968
出版年度：2005
卷号：11
期号：12
页码：1963-1969
出版社：Graz University of Technology and Know-Center
摘要：This paper is an investigation of positive elements in a Banach algebra. Under the firmness of the state space of a Banach algebra, it is shown that even powers of positive Hermitian elements are in fact positive.