Semidirect Product Compactifications

Author:

Dangello F.,Lindahl R.

Abstract

1. Introduction. K. Deleeuw and I. Glicksberg [4] proved that if S and T are commutative topological semigroups with identity, then the Bochner almost periodic compactification of S × T is the direct product of the Bochner almost periodic compactifications of S and T. In Section 3 we consider the semidirect product of two semi topological semigroups with identity and two unital C*-subalgebras and of W(S) and W(T) respectively, where W(S) is the weakly almost periodic functions on S. We obtain necessary and sufficient conditions and for a semidirect product compactification of to exist such that this compactification is a semi topological semigroup and such that this compactification is a topological semigroup. Moreover, we obtain the largest such compactifications.

Publisher

Canadian Mathematical Society

Subject

General Mathematics

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1. On Bohr compactifications and profinite completions of group extensions;Mathematical Proceedings of the Cambridge Philosophical Society;2023-10-09

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