Results 121 to 130 of about 141,848 (276)

Vector-valued means and weakly almost periodic functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
A formula is set up between vector-valued mean and scalar-valued means that enables us translate many important results about scalar-valued means developed in [1] to vector-valued means.
Chuanyi Zhang
doaj   +1 more source

One-Parameter Semigroups in a Semigroup [PDF]

open access: yesTransactions of the American Mathematical Society, 1960
Paul S. Mostert, Allen Shields
openaire   +3 more sources

Radicals of semigroup rings of commutative semigroups

open access: yesSemigroup Forum, 1994
This is a survey of results on radicals of semigroup rings of commutative semigroups. Most of the material is concerned with the Jacobson radical, but some other classical radicals and the general Kurosh-Amitsur radicals are also discussed. There are five sections that deal with: 1) descriptions of the radicals, 2) semiprimitivity, 3) nilness and ...
openaire   +2 more sources

Tarski Semigroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1977
A Tarski semigroup is an algebraic system which mirrors a fragment of the additive theory of cardinal numbers. Here we show that any two such systems have the same universal theory. We also give a simple arithmetical necessary and sufficient condition for a universal sentence to hold in a Tarski semigroup.
openaire   +2 more sources

On fuzzy points in semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We consider the semigroup S¯ of the fuzzy points of a semigroup S, and discuss the relation between the fuzzy interior ideals and the subsets of S¯ in an (intra-regular) semigroup S.
Kyung Ho Kim
doaj   +1 more source

Modified Whyburn semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
Let f:X→Y be a continuous semigroup homomorphism. Conditions are given which will ensure that the semigroup X∪Y is a topological semigroup, when the modified Whyburn topology is placed on X∪Y.
Beth Borel Reynolds, Victor Schneider
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On representation of semigroups of inclusion hyperspaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2010
Given a group $X$ we study the algebraic structure of the compactright-topological semigroup $G(X)$ consisting of inclusionhyperspaces on $X$. This semigroup contains the semigroup$lambda(X)$ of maximal linked systems as a closed subsemigroup.We ...
Gavrylkiv V.M.
doaj  

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