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Published online by Cambridge University Press: 24 October 2008
We are concerned in this paper with the same general problem as in [4], that is, the relation between the spectral and norm properties of a sub-algebra of M(G) and the corresponding properties of the algebra of its ‘transforms’ in some sense. The spirit of the investigation is akin to that of the earlier paper, and some of the results obtained here directly generalize those of [4]. There are, however, considerable differences in scope and method.