In the present paper, it is shown that a left cancellative semigroup S (not necessarily with
identity) is left amenable whenever the Banach algebra ℓ 1 (S) is approximately amenable. It …

In this manuscript we generalize of the notion of polygroup in an arbitrary category E, which
is also a generalization of the notion of group object. We then define the category, PGrp (E) …

Let S be a foundation locally compact topological semigroup, and let M a (S) be the space of
all measures μ∈ M (S) for which the maps x↦| μ|∗ δ x and x↦| μ|∗ δ x from S into M (S) are …

Convolution Operators on Semigroup Algebras Page 1 Southeast Asian Bulletin of
Mathematics (2004) 27: 1025-1036 Southeast Asian Bulletin of Mathematics ©SEAMS …

THE ARENS REGULARITY OF WEIGHTED SEMIGROUP ALGEBRAS A. Rejali Received July
2, 2002; revised September 24, 2003 Introduction Let Page 1 Scientiae Mathematicae …

Acta Mathematica Sinica, English Series Page 1 Acta Mathematica Sinica, English Series
Jul., 2008, Vol. 24, No. 7, pp. 1089–1096 Published online: June 15, 2008 DOI: 10.1007/s10114-007-6071-6 …

The weighted semigroup algebra M b (S, w) is studied via its identification with M b (S)
together with a weighted algebra product* w so that (M b (S, w),*) is isometrically isomorphic …

We investigate involutions and trivolutions in the second dual of algebras related to a locally
compact topological semigroup and the Fourier algebra of a locally compact group. We …

Banach algebra A for which the natural embedding x into x^ of A into WAP (A)* is bounded
below; that is, for some m in R with m> 0 we have|| x^||> m|| x||, is called a WAP-algebra …

TOPOLOGICALLY LEFT INVARIANT MEAN ON DUAL SEMIGROUP ALGEBRAS 1.
Introduction Let S be a locally compact Hausdorff semitopologica Page 1 Bulletin of the Iranian …