Research notes | Open Access
Lokenath Debnath, Ram Verma, "On multiparameter spectral theory", International Journal of Mathematics and Mathematical Sciences, vol. 14, Article ID 845083, 2 pages, 1991. https://doi.org/10.1155/S0161171291001096
On multiparameter spectral theory
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.