Geodesic
Spectral characterizations of central elements in Banach algebras
Studia Mathematica, Tome 120 (1996) no. 1, pp. 47-52 Cet article a éte moissonné depuis la source Institute of Mathematics Polish Academy of Sciences

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Let A be a complex unital Banach algebra. We characterize elements belonging to Γ(A), the set of elements central modulo the radical. Our result extends and unifies several known characterizations of elements in Γ(A). 
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     title = {Spectral characterizations of central elements in {Banach} algebras},
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     language = {en},
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Matej Brešar. Spectral characterizations of central elements in Banach algebras. Studia Mathematica, Tome 120 (1996) no. 1, pp. 47-52. doi: 10.4064/sm-120-1-47-52

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