Title of article :
ON THE SPECTRUM OF SPECIAL CLASSES OF DOUBLY COMMUTING n −TUPLES OF OPERATORS
Author/Authors :
Ahmed, Buthainah A. University of Baghdad - College of Science - Department of Mathematics, Iraq , Al-Janaby, Hiba F. University of Baghdad - College of Science - Department of Mathematics, Iraq
Abstract :
In this paper we study a spectral characterization of the Taylor-Browder spectrum for a double commuting n − tuple of totally θ −operators, and study relation between the Taylor- Weyl spectrum, Taylar- Browder spectrum, joint-Weyl spectrum, and joint- Browder spectrum for commuting n − tuple of totally θ −operators. Also we study a spectral characterization of the Taylor-Browder spectrum for a doubly commuting n − tuple of posinormal operators.
Keywords :
SPECIAL CLASSES , SPECTRUM , DOUBLY COMMUTING n −TUPLES , OPERATORS
Journal title :
Iraqi Journal Of Science
Journal title :
Iraqi Journal Of Science
