Results 81 to 90 of about 20,464 (181)
Pseudo-amenability and pseudo-contractibility of restricted semigroup algebra
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2018 In this article the pseudo-amenability and pseudo-contractibility of restricted semigroup algebra lr1(S) and semigroup algebra, l1(Sr) on restricted semigroup, Sr are investigated for different classes of inverse semigroups such as Brandt semigroup, and ...
Olufemi Johnson Ogunsola +1 more
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Free locally inverse *-semigroups [PDF]
Czechoslovak Mathematical Journal, 1993 Let \((S,.)\) be a semigroup endowed with an additional unary operation \(x \to x^*\) satisfying: 1) \((xy)^* = y^*x^*\), 2) \((x^*)^* = x\), 3) \(xx^*x = x\). Then \((S,.,*)\) is called a regular \(*\)-semigroup. If in addition \((S,.,*)\) is locally inverse, i.e. each local submonoid \(eSe\) \((e \in E_ S)\) of \((S,.,*)\) is inverse, then \(S\) is a
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Restricted Algebras on Inverse Semigroups—Part II: Positive Definite Functions
International Journal of Mathematics and Mathematical Sciences, 2011 The relation between representations and positive definite functions is a key concept in harmonic analysis on topological groups. Recently this relation has been studied on topological groupoids.
Massoud Amini, Alireza Medghalchi
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Journal of Applied Mathematics, 2012 The aim of this paper is to introduce a new iterative scheme for finding common solutions of the variational inequalities for an inverse strongly accretive mapping and the solutions of fixed point problems for nonexpansive semigroups by using the ...
Phayap Katchang, Poom Kumam
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Derivations and KMS-Symmetric Quantum Markov Semigroups. [PDF]
Commun Math Phys, 2023 Vernooij M, Wirth M.
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An Extension of a result of Csiszar
International Journal of Mathematics and Mathematical Sciences, 1986 We extend the results of Csiszar (Z. Wahr. 5(1966) 279-295) to a topological semigroup S. Let μ be a measure defined on S. We consider the value of α=supKcompactlimn→∞supx∈Sμn(Kx−1). First. we show that the value of α is either zero or one.
P. B. Cerrito
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UNDECIDABILITY AND THE DEVELOPABILITY OF PERMUTOIDS AND RIGID PSEUDOGROUPS
Forum of Mathematics, Sigma, 2017 A permutoid is a set of partial permutations that contains the identity and is such that partial compositions, when defined, have at most one extension in the set.
MARTIN R. BRIDSON, HENRY WILTON
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Idempotent 2x2 matrices over linearly ordered abelian groups [PDF]
Categories and General Algebraic Structures with ApplicationsIn this paper we study multiplicative semigroups of $2\times 2$ matrices over a linearly ordered abelian group with an externally added bottom element. The multiplication of such a semigroup is defined by replacing addition and multiplication by join and
Valdis Laan, Marilyn Kutti
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Regularity and Green's Relations on a Semigroup of Transformations with Restricted Range
International Journal of Mathematics and Mathematical Sciences, 2008 Let T(X) be the full transformation semigroup on the set X and let T(X,Y)={α∈T(X):Xα⊆Y}. Then T(X,Y) is a sub-semigroup of T(X) determined by a nonempty subset Y of X.
Jintana Sanwong, Worachead Sommanee
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Free Strict Inverse Semigroups
Journal of Algebra, 1993 An inverse semigroup is ``strict'' if it is a subdirect product of Brandt semigroups and groups. Strict inverse semigroups form a variety of inverse semigroups. Other than the varieties of Clifford semigroups, its subvarieties are those of the form \({\mathbf H}\vee{\mathbf B}\), where \(\mathbf H\) is some variety of groups and \(\mathbf B\) is the ...
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