Abstract and Applied Analysis
Volume 2011 (2011), Article ID 540212, 9 pages
http://dx.doi.org/10.1155/2011/540212
Research Article

Partial Isometries and EP Elements in Banach Algebras

Dijana Mosić and Dragan S. Djordjević

Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, P.O. Box 224, 18000 Niš, Serbia

Received 29 January 2011; Revised 1 April 2011; Accepted 6 April 2011

Academic Editor: Ljubisa Kocinac

Copyright © 2011 Dijana Mosić and Dragan S. Djordjević. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

New characterizations of partial isometries and EP elements in Banach algebra are presented.