|
|||||
|
|
Norm inequalities for sums of two basic elementary operators |
|
| Authors: | Mohamed Boumazgour |
| Institution: | Faculté des Sciences Juridiques, Economiques et Sociales, B.P. 8658 Cité Dakhla, Agadir, Morocco |
| Abstract: | We use certain norm inequalities for 2×2 operator matrices to establish norm inequalities for sums of two basic elementary operators on a Hilbert space. Further, we give necessary and sufficient conditions under which the norm of the above sum of elementary operators attains its optimal value. Applications of the inequalities obtained are also considered. |
| Keywords: | Norm Elementary operators Numerical ranges _method=retrieve& _eid=1-s2 0-S0022247X07013728& _mathId=si2 gif& _pii=S0022247X07013728& _issn=0022247X& _acct=C000053510& _version=1& _userid=1524097& md5=348e66dc3b0d91892b3be0958a5581ea')" style="cursor:pointer C&lowast" target="_blank">" alt="Click to view the MathML source" title="Click to view the MathML source">C&lowast -algebras |
| 本文献已被 ScienceDirect 等数据库收录！ | |