<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Seddik. A</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">ON THE INJECTIVE NORM OF sigma(Ai &amp;otimes; Bi) AND CHARACTERIZATION OF NORMALOID OPERATORS</style></title><secondary-title><style face="normal" font="default" size="100%">Operators and Matrices</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year></dates><volume><style face="normal" font="default" size="100%">2</style></volume><pages><style face="normal" font="default" size="100%">67-77</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Let B(H) denotes the C∗-algebra of all bounded linear operators acting on the&lt;br&gt;complex Hilbert space H . In this note, we shall give some lower estimates for the injective norm&lt;br&gt;of the element&lt;br&gt;n&lt;br&gt;i=1&lt;br&gt;Ai⊗Bi in the tensor product B(H)⊗B(H), where A = (A1, ..., An) and B =&lt;br&gt;(B1, ..., Bn) are two n-tuples of elements in B(H) ; and we shall characterize the normaloid&lt;br&gt;operators in B(H) using the injective norm.&lt;br&gt;1.</style></abstract></record></records></xml>