نتایج جستجو برای: profinite semigroup

تعداد نتایج: 6647  

Journal: :Proceedings of the American Mathematical Society 2007

Journal: :Journal of Pure and Applied Algebra 1993

2010
AKS Chandra Sekhar

Two Divisibility Tests for Smarandache semigroups are given . Further, the notion of divisibility of elements in a semigroup is applied to characterize the Smarandache semigroups. Examples are provided for justification.

2009
J. D. Mitchell

In this paper we propose a general recipe for calculating the automorphism groups of semigroups consisting of partial endomorphisms of relational structures with a single m-ary relation for any m ∈ N over a finite set. We use this recipe to determine the automorphism groups of the following semigroups: the full transformation semigroup, the partial transformation semigroup, and the symmetric in...

2008
BENJAMIN STEINBERG

The second statement of Corollary 3 was first proved by Almeida and Volkov using techniques coming from symbolic dynamics [2]. Our next result generalizes a result of Rhodes and the author showing that all elements of finite order in F̂V(A) are group elements, which played a key role in proving that such elements are in fact idempotent [7]. Let N̂ denote the profinite completion of the monoid of ...

Journal: :journal of sciences islamic republic of iran 0

in [1,2,3], a. c. baker and j.w. baker studied the subspace ma(s) of the convolution measure algebra m, (s) of a locally compact semigroup. h. dzinotyiweyi in [5,7] considers an analogous measure space on a large class of c-distinguished topological semigroups containing all completely regular topological semigroups. in this paper, we extend the definitions to study the weighted semigroup algeb...

Let S be a locally compact topological foundation semigroup with identity and Ma(S) be its semigroup algebra. In this paper, we give necessary and sufficient conditions to have abounded approximate identity in closed codimension one ideals of the semigroup algebra $M_a(S)$ of a locally compact topological foundationsemigroup with identity.

2007
J. ALMEIDA

This is a survey of results of the profinite approach to decidability problems in the theory of finite semigroups.

Journal: :Axioms 2017
Taras O. Banakh

Let ~ C be a category whose objects are semigroups with topology and morphisms are closed semigroup relations, in particular, continuous homomorphisms. An object X of the category ~ C is called ~ C-closed if for each morphism Φ ⊂ X×Y in the category ~ C the image Φ(X) = {y ∈ Y : ∃x ∈ X (x, y) ∈ Φ} is closed in Y. In the paper we survey existing and new results on topological groups, which are ~...

Journal: :Int. J. Fuzzy Logic and Intelligent Systems 2012
Sang-Mok Kim Kul Hur Minseok Cheong Gab-Byung Chae

We initiate the study of interval-valued fuzzy quasi-ideal of a semigroup. In Section 2, we list some basic definitions in the later sections. In Section 3, we investigate interval-valued fuzzy subsemigroups and in Section 4, we define intervalvalued fuzzy quasi-ideals and establish some of their basic properties. In Section 5, we obtain characterizations of regular and intraregular semigroups ...

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