Journals / Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics / 1980 / Cilt: 29
Left and right spectra
- Issue
- 1980 · Cilt: 29
- Pages
- 1–1
- DOI
- —
Abstract
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.