Results 121 to 130 of about 24,881 (221)

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

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

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  

Baer *-semigroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1960
openaire   +1 more source

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  

Controllability of Fractional Integro-Differential Equations with Delays and Singular Kernels in Fréchet Spaces

open access: yesMathematics
This paper is devoted to the investigation of existence and approximate controllability results for a class of fractional integro-differential equations formulated in Fréchet spaces.
Fatima Mesri   +2 more
doaj   +1 more source

ON SOME IDEALS OF INTUITIOISTIC FUZZY POINTS SEMIGROUPS

open access: yesJournal of New Theory, 2017
– In this paper, the minimal ideal characteristic function we consider the semigroup of the intuitionistic fuzzy points of a semigroup and discuss some relations between some ideals of and the subset of the ...
Essam Hamed Hamouda
doaj  

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  

Generalized Polynomials on Semigroups

open access: yesAnnales Mathematicae Silesianae
This article has two main parts. In the first part we show that some of the basic theory of generalized polynomials on commutative semi-groups can be extended to all semigroups.
Ebanks Bruce
doaj   +1 more source

New approach to streaming semigroups with multiplying boundary conditions

open access: yesElectronic Journal of Differential Equations, 2008
This paper concerns the generation of a C_0-semigroup by the streaming operator with general multiplying boundary conditions. A first approach, presented in [2], is based on the Hille-Yosida's Theorem.
Mohamed Boulanouar
doaj  

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