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Journal of Inequalities and Applications 
Volume 2007 (2007), Article ID 71012, 6 pages
doi:10.1155/2007/71012

Research Article

Some Properties of Pythagorean Modulus

Fenghui Wang

Department of Mathematics, Luoyang Normal University, Luoyang 471022, China

Received 7 July 2007; Revised 22 November 2007; Accepted 3 December 2007

Recommended by András Rontó

Abstract

We consider two Pythagorean modulus introduced by Gao (2005, 2006) recently. The exact values concerning these modulus for some classical Banach spaces are determined. Some applications in geometry of Banach spaces are also obtained.