Author(s): O.H. Cheikh and M. Oudadess
Article publication date: 1988-08-01
Vol. 6 No. 2 (yearly), pp. 173-179.
159
Keywords
algebras, nonunital complex, commutativity
Abstract
It is shown that the condition ||xy||≤ α ||yx|| for all x and y, α being a positive constant, does not imply commutativity in nonunital complex Banach Algebras. Other results, concerning the structure of certain Banach algebras satisfying this condition are obtained