The left spectrnm a\a) and tbe right spectrum c’^(a) of an element in a Banach algebra A are considered and some properties are proved. Operatör algebras in which, for every element T, a’(T) = o“^(T) are investigated, and a characterization of ct*(T) and o'^(T) is given.
Primary Language | English |
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Subjects | Mathematical Sciences |
Journal Section | Research Articles |
Authors | |
Publication Date | January 1, 1980 |
Submission Date | January 2, 1980 |
Published in Issue | Year 1980 Volume: 29 |
Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics.
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