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International Journal of Mathematics and Mathematical Sciences 
Volume 14 (1991), Issue 4, Pages 813-814
doi:10.1155/S0161171291001096

Research notes

On multiparameter spectral theory

Lokenath Debnath and Ram Verma

Department of Mathematics, University of Central Florida, Orlando 32816, FL, USA

Received 10 March 1991

Abstract

A connection between the numerical range of the multipararneter linear system P(λ) and the joint numerical range of the (commuting) separating operator system is given.