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On Lebesgue-type decompositions for Banach algebras

Published online by Cambridge University Press:  17 April 2009

Howard Anton
Affiliation:
Drexel University, Philadelphia, USA.
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Abstract

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If the maximal ideal space of a commutative complex unitary Banach algebra, X, is equipped with a nonnegative, finite, regular Borel measure, m, then for each element, x, in X, a. complex regular Borel measure, mx, can be obtained by integrating the Gelfand transform of x with respect to m over the Borel sets. This paper considers the possibility of direct sum decompositions of the form X = AxPx where Ax = {z ε X: mzmx} and Px = {z ε X: mzmx}.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1970

References

[1] Anton, Howard, “Borel measures on the maximal ideals of a Banach algebra”, Ph.D. dissertation, Polytechnic Institute of Brooklyn, 1968.Google Scholar
[2] Dunford, Nelson and Schwartz, Jacob T., Linear operators, Part I: General theory (Interscience Publishers, New York, London, 1958).Google Scholar
[3] Gelfand, I., Raikov, D. and Shilov, G., Commutative normed rings (Chelsea, New York, 1964).Google Scholar
[4] Hewitt, Edwin and Stromberg, Karl, Real and abstract analysis. A modern treatment of the theory of functions of a real variable (Springer-Verlag, Berlin, Göttingen, Heidelberg, New York, 1965).Google Scholar
[5] Šilov, G.E., “On the decomposition of a commutative normed ring into a direct sum of ideals”, Mat. Sb. 32 (74) (1953), 353364, (Russian). Amer. Math. Soc. Transl. (2) 1 (1955), 3748.Google Scholar