Results 91 to 100 of about 196 (184)

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  

Extremal topologies on a semigroup

open access: yesTopology and its Applications, 1991
Given a semigroup \((S,+)\) with discrete topology \(\tau_ d\), and given a set \({\mathcal A}\) of topologies on \(S\), an element \(\tau\) of \({\mathcal A}\) is said to be extremal (in \({\mathcal A})\) if (i) \(\tau\neq\tau_ d\) and (ii) if \(\tau\subseteq\tau'\in{\mathcal A}\) and \(\tau\neq\tau'\), then \(\tau'=\tau_ d\). The author shows that if
openaire   +2 more sources

FREE SEMIGROUPS AND IDEMPOTENTS IN T [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1998
The known theory for an oid T shows how to find a subset T of ?T, which is a compact right topological semigroup [I]. The success of the methods in [2] for obtaining properties of-T has prompted us to see how successful they would be in another context.
doaj  

Filters and topologies on semigroups

open access: yesMatematychni Studii, 1994
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Decomposition of H*-Algebra Valued Negative Definite Functions on Topological *-Semigroups [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2006
In the present paper, among other results, a decomposition formula is given for the w-bounded continuous negative definite functions of a topological *-semigroup S with a weight function w into a proper H*-algebra A in terms of w-bounded continuous ...
doaj  

On prime spaces of neutrosophic extended triplet groups

open access: yesOpen Mathematics
This article aims to investigate the Zariski topology on the set of prime ideals of a weak commutative neutrosophic extended triplet group (NETG) NN, denoted by Prim(N){\rm{Prim}}\left(N).
Zhou Xin, Xin Xiao Long
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