Abstract
In this paper, among other things, the author studies the weak*-closed left translation invariant complemented subspace of semigroup algebras and group algebras. Also, the author studies the relationships between projections and amenability.
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Ghaffari, A. Projections onto invariant subspaces of some banach algebras. Acta. Math. Sin.-English Ser. 24, 1089–1096 (2008). https://doi.org/10.1007/s10114-007-6071-6
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DOI: https://doi.org/10.1007/s10114-007-6071-6