On semigroups having a kernel
Štefan Schwarz (1951)
Czechoslovak Mathematical Journal
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Štefan Schwarz (1951)
Czechoslovak Mathematical Journal
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Mario Petrich (1964)
Czechoslovak Mathematical Journal
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Marek Ptak (1991)
Annales Polonici Mathematici
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Abstract. We consider the reflexivity of a WOT-closed algebra generated by continuous isometric semigroups parametrized by the semigroup of non-negative reals or the semigroup of finite sequences of non-negative reals. It is also proved that semigroups of continuous unilateral multi-parameter shifts are reflexive.
John Rhodes (1969-1970)
Séminaire Dubreil. Algèbre et théorie des nombres
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