Results 121 to 130 of about 143,321 (277)

Recurrency on the Space of Hilbert-Schmidt Operators

open access: yesمجلة بغداد للعلوم
In this paper, it is proved that if a C0-semigroup is chaotic, hypermixing or supermixing, then the related left multiplication C0-semigroup on the space of Hilbert-Schmidt operators is recurrent if and only if it is hypercyclic. Also, it is stated that
Mansooreh Moosapoor
doaj   +1 more source

Semigroup algebras of linear semigroups

open access: yesJournal of Algebra, 1992
The authors state that in this paper they begin a systematic study of the semigroup algebras of linear semigroups, i.e. the subsemigroups of the multiplicative monoids \({\mathcal M}_ n(k)\) of all \(n\times n\)-matrices over a field \(k\), which is supposed to be algebraically closed.
Okniński, Jan, Putcha, Mohan S
openaire   +1 more source

On (m, n)-ideals and (m, n)-regular ordered semigroups [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2016
Let m, n be non-negative integers. A subsemigroup A of an ordered semigroup (S,  ,  is called an (m, n)-ideal of S if (i) Am SAn  A, and (ii) if x  A, y  S such that y  x, then y  A. In this paper, necessary and sufficient conditions for every (
Limpapat Bussaban, Thawhat Changphas
doaj  

One-Parameter Semigroups in a Semigroup [PDF]

open access: yesTransactions of the American Mathematical Society, 1960
Mostert, P. S., Shields, A. L.
openaire   +2 more sources

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  

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

Quasi-Distribution Semigroups and Integrated Semigroups

open access: yesJournal of Functional Analysis, 1997
The author extends the notion of generator of distribution semigroups on Banach spaces to non-densely defined operators. He also introduces a functional calculus for these operators and characterizes integrated semigroups in terms of this functional calculus.
openaire   +1 more source

Smarandache Soft Semigroups and their Properties

open access: yesJournal of New Theory, 2015
– In this paper, the notions of smarandache soft semigroups (SS-semigroups) introduced for the first time. An SS-semigroup ( , ) is basically a parameterized collection of subsemigroups which has F A is basically a parameterized collection of ...
Mumtaz Ali
doaj  

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