Results 81 to 90 of about 27,754 (248)

On the Structure of С*-Algebras Generated by Representations of the Elementary Inverse Semigroup [PDF]

Учёные записки Казанского университета: Серия Физико-математические науки, 2016
The class of С*-algebras generated by the elementary inverse semigroup and being deformations of the Toeplitz algebra has been introduced and studied. The properties of these algebras have been investigated.
S.A. Grigoryan, E.V. Lipacheva
doaj  

Counter examples for pseudo-amenability of some semigroup algebras

Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2020
In this short note, we give some counter examples which show that [11, Proposition 3.5] is not true. As a consequence, the arguments in [11, Proposition 4.10] is not valid.
Amir Sahami
doaj  

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
openaire   +2 more sources

Algebras of right ample semigroups

Open Mathematics, 2018
Strict RA semigroups are common generalizations of ample semigroups and inverse semigroups. The aim of this paper is to study algebras of strict RA semigroups.
Guo Junying, Guo Xiaojiang
doaj   +1 more source

The Regular Part of a Semigroup of Full Transformations with Restricted Range: Maximal Inverse Subsemigroups and Maximal Regular Subsemigroups of Its Ideals

International Journal of Mathematics and Mathematical Sciences, 2018
Let TX be the full transformation semigroup on a set X. For a fixed nonempty subset Y of a set X, let TX,Y be the semigroup consisting of all full transformations from X into Y.
Worachead Sommanee
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On a groupoid construction for actions of certain inverse semigroups [PDF]

, 1993
Alexandru Nica
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Commutant properties of w-core inverses

Kuwait Journal of Science
In this paper, we investigate commutant properties of the w-core inverse in a ∗-semigroup. Among these, it is shown that [Figure presented] if and only if a is equal projection (EP) with [Figure presented], where a and w are elements of a ∗-semigroup. As
doaj   +1 more source

Groupoids and inverse semigroups associated to W*-algebras [PDF]

, 2011
Anatol Odzijewicz, Aneta Sliżewska
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On inverse submonoids of the monoid of almost monotone injective co-finite partial selfmaps of positive integers

Karpatsʹkì Matematičnì Publìkacìï, 2019
In this paper we study submonoids of the monoid $\mathscr{I}_{\infty}^{\,\Rsh\!\!\nearrow}(\mathbb{N})$ of almost monotone injective co-finite partial selfmaps of positive integers $\mathbb{N}$.
O.V. Gutik, A.S. Savchuk
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Cuntz-Li relations, Inverse semigroups and Groupoids

, 2012
In this paper we show that the universal C*-algebra satisfying the Cuntz-Li relations is generated by an inverse semigroup of partial isometries. We apply Exel's theory of tight representations to this inverse semigroup.
Sundar, S.
core