Research notes | Open Access
On multiparameter spectral theory
Received10 Mar 1991
A connection between the numerical range of the multipararneter linear system and the joint numerical range of the (commuting) separating operator system is given.
Copyright © 1991 Hindawi Publishing Corporation. 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.