Results 41 to 50 of about 144,318 (259)

Tiling Semigroups

open access: yesJournal of Algebra, 2000
In earlier articles of the first author it was shown how to construct an inverse semigroup from any tiling of Euclidean space. Such semigroups are called tiling semigroups. In the paper a categorical basis for such constructions is given in terms of an appropriate group acting partially and without fixed points on an inverse category associated with ...
Kellendonk, J., Lawson, Mark V.
openaire   +2 more sources

Neutrosophic LA-Semigroup Rings [PDF]

open access: yesNeutrosophic Sets and Systems, 2015
Neutrosophic LA-semigroup is a midway structure between a neutrosophic groupoid and a commutative neutrosophic semigroup. Rings are the old concept in algebraic structures.
Mumtaz Ali   +3 more
doaj  

Finite groups are big as semigroups [PDF]

open access: yes, 2011
We prove that a finite group G occurs as a maximal proper subsemigroup of an infinite semigroup (in the terminology of Freese, Ježek, and Nation, G is a big semigroup) if and only if |G| ≥ 3.
Dolinka, Igor, Ruskuc, Nik
core   +2 more sources

Reductive compactifications of semitopological semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
We consider the enveloping semigroup of a flow generated by the action of a semitopological semigroup on any of its semigroup compactifications and explore the possibility of its being one of the known semigroup compactifications again.
Abdolmajid Fattahi   +2 more
doaj   +1 more source

Bi-Interior Ideals of Semigroups

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2018
In this paper, as a further generalization of ideals, we introduce the notion of bi-interior ideal as a generalization of quasi ideal, bi-ideal and interior ideal of semigroup and study the properties of bi-interior ideals of semigroup, simple semigroup ...
Rao M. Murali Krishna
doaj   +1 more source

Neutrosophic Left Almost Semigroup [PDF]

open access: yesNeutrosophic Sets and Systems, 2014
In this paper we extend the theory of neutrosophy to study left almost semigroup shortly LAsemigroup. We generalize the concepts of LA-semigroup to form that for neutrosophic LA-semigroup.
Mumtaz Ali   +3 more
doaj  

Chaotic and hypercyclic properties of the quasi-linear Lasota equation

open access: yesOpen Mathematics, 2015
In this paper we describe an explicit solution semigroup of the quasi-linear Lasota equation. By constructing the relationship of this solution semigroup with the translation semigroup we obtain some sufficient and necessary conditions for the solution ...
Hung Cheng-Hung
doaj   +1 more source

Topological monoids of almost monotone injective co-finite partial selfmaps of the set of positive integers

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
In this paper we study the semigroup $\mathcal{I}_{\,\infty}^{?\nearrow}(\mathbb{N})$ of partial co-finite almost monotone bijective transformations of the set of positive integers $\mathbb{N}$.
I. Ya. Chuchman, O. V. Gutik
doaj   +1 more source

Holomorphicc-semigroups and holomorphic semigroups

open access: yesSemigroup Forum, 1989
This paper is concerned with holomorphic C-semigroups. The main purpose is to give a characterization of the C-complete infinitesimal generator of a holomorphic C-semigroup, which coincides with that of a holomorphic \((C_ 0)\)-semigroup in the case of \(C=I\). We also clarify the relationship between holomorphic C-semigroups and holomorphic semigroups
openaire   +1 more source

Matrix semigroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1983
Let S S be a semigroup of matrices over a field such that a power of each element lies in a subgroup (i.e., each element has a Drazin inverse within the semigroup). The main theorem of this paper is that there exist ideals I 0 , … ,
openaire   +2 more sources

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