Results 11 to 20 of about 760 (210)
Enumerating transformation semigroups [PDF]
Semigroup Forum, 2017 11 pages, 6 figures, 3 tables, v4: updated references,added T4 gap values, corrections in ...
East, James (R16839) +2 more
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Skew Pairs of Idempotents in Partial Transformation Semigroups
Mathematics, 2021 Let S be a regular semigroup. A pair (e,f) of idempotents of S is said to be a skew pair of idempotents if fe is idempotent, but ef is not. T. S. Blyth and M. H. Almeida (T. S. Blyth and M. H.
Panuwat Luangchaisri, Thawhat Changphas
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Transformation semigroups associated to Γ-semigroups
Discussiones Mathematicae - General Algebra and Applications, 2013 The concept of Γ-semigroups is a generalization of semigroups. In this paper, we associate two transformation semigroups to a Γ-semigroup and we call them the left and right transformation semigroups. We prove some relationships between the ideals of a Γ-semigroup and the ideals of its left and right transformation semigroups.
Marzieh Amooshahi, Dariush Heidari
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Transformation Representations of Sandwich Semigroups [PDF]
Experimental Mathematics, 2018 Let $a$ be an element of a semigroup $S$. The local subsemigroup of $S$ with respect to $a$ is the subsemigroup $aSa$ of $S$. The variant of $S$ with respect to $a$ is the semigroup with underlying set $S$ and operation $\star_a$ defined by $x\star_ay=xay$ for $x,y\in S$.
East, James (R16839)
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Thickness in topological transformation semigroups
International Journal of Mathematics and Mathematical Sciences, 1993 This article deals with thickness in topological transformation semigroups (τ-semigroups). Thickness is used to establish conditions guaranteeing an invariant mean on a function space defined on a τ-semigroup if there exists an invariant mean on its ...
Tyler Haynes
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Computing Transformation Semigroups
Journal of Symbolic Computation, 2002 The paper describes data structures and algorithms for performing computations in a finite semigroup \(S\) with identity, generated by a set of transformations. A basic idea behind the algorithms is the partition of \(S\) with the aid of an equivalence relation \(\mathcal R\), one of Green's relations.
Steve Linton +3 more
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UNIVERSAL COMPACTIFICATIONS OF TRANSFORMATION SEMIGROUPS [PDF]
Journal of Sciences, Islamic Republic of Iran, 2000 We extend the notion of semigroup compactification to the class of transformation semigroups, and determine the compactifications which are universal with respect to some topological properties.
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a-minimal sets and related topics in transformation semigroups (I) [PDF]
International Journal of Mathematics and Mathematical Sciences, 2001 We deal with a-minimal sets instead of minimal right ideals of the enveloping semigroup and obtain a partition of disjoint isomorphic subgroups of some of its subsets.
Masoud Sabbaghan +1 more
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On left restriction semigroups with zero
Kuwait Journal of Science, 2023 In this article, we give the notion of left restriction meet-semigroup, and establish some results regarding atomistic left restriction semigroups. Then we discuss decompositions of (non-zero) semigroups with zero by proving a decomposition theorem.
Baddi Ul Zaman
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Codecomposition of a Transformation Semigroup [PDF]
Ukrainian Mathematical Journal, 2014 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sabbaghan, M. +2 more
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