Title of article
On numerical ranges and roots ✩
Author/Authors
Chi-Kwong Li، نويسنده , , Leiba Rodman، نويسنده , , Ilya M. Spitkovsky، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2003
Pages
12
From page
329
To page
340
Abstract
Existence of the fractional powers is established in Banach algebra setting, in terms of the numerical
ranges of elements involved. The behavior of the spectra and (for Hermitian ∗-algebras satisfying
some additional hypotheses) the ∗-numerical range under taking these powers also is investigated.
2003 Elsevier Science (USA). All rights reserved.
Keywords
ROOT , Hermitian Banach algebra , numerical range
Journal title
Journal of Mathematical Analysis and Applications
Serial Year
2003
Journal title
Journal of Mathematical Analysis and Applications
Record number
930608
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