Geodesic
Finite rank elements in semisimple Banach algebras
Studia Mathematica, Tome 128 (1998) no. 3, pp. 287-298 Cet article a éte moissonné depuis la source Institute of Mathematics Polish Academy of Sciences

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Let A be a semisimple Banach algebra. We define the rank of a nonzero element a in the socle of A to be the minimum of the number of minimal left ideals whose sum contains a. Several characterizations of rank are proved. 
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     title = {Finite rank elements in semisimple {Banach} algebras},
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Matej Brešar;  . Finite rank elements in semisimple Banach algebras. Studia Mathematica, Tome 128 (1998) no. 3, pp. 287-298. doi: 10.4064/sm-128-3-287-298

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