Results 91 to 100 of about 262,446 (205)

Attractors of Compactly Generated Semigroups of Regular Polynomial Mappings

Complexity, 2018
We investigate the metric space of pluriregular sets as well as the contractions on that space induced by infinite compact families of proper polynomial mappings of several complex variables.
Azza Alghamdi, Maciej Klimek, Marta Kosek   +2 more
doaj   +1 more source

On representation of semigroups of inclusion hyperspaces

Karpatsʹkì Matematičnì Publìkacìï, 2013
Given a group $X$ we study the algebraic structure of the compact right-topological semigroup $G(X)$ consisting of inclusion hyperspaces on $X$. This semigroup contains the semigroup $\lambda(X)$ of maximal linked systems as a closed subsemigroup.
V. M. Gavrylkiv
doaj   +1 more source

DIVISIBILITY TESTS FOR SMARANDACHE SEMIGROUPS [PDF]

, 2002
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.
Rao, Chandra Sekhar
core   +1 more source

Quasi-ideal transversals of abundant semigroups and spined products

, 2010
We provide a new and much simpler structure for quasi-ideal adequate transversals of abundant semigroups in terms of spined products, which is similar in nature to that given by Saito for weakly multiplicative inverse transversals of regular semigroups ...
Renshaw, James, James Renshaw, Jehan Al-bar, Al-Bar, Jehan   +3 more
core   +1 more source

Some properties of linear right ideal nearrings

International Journal of Mathematics and Mathematical Sciences, 2003
In a previous paper, we determined all those topological nearrings 𝒩n whose additive groups are the n-dimensional Euclidean groups, n>1, and which contain n one-dimensional linear subspaces {Ji}i=1n which are also right ideals of the nearring with the ...
K. D. Magill
doaj   +1 more source

On Extensions over Semigroups and Applications

Entropy, 2016
Applying a theorem according to Rhemtulla and Formanek, we partially solve an open problem raised by Hochman with an affirmative answer. Namely, we show that if G is a countable torsion-free locally nilpotent group that acts by homeomorphisms on X, and
Wen Huang, Lei Jin, Xiangdong Ye
doaj   +1 more source

Acting Fibrations and Lifting Functions in the Homotopy Theory of Single Intersection Graphs over Topological Semigroups

Mathematics
In this paper, we study the homotopy theory of single intersection graphs arising from acting spaces over topological semigroups. An acting space (S,B) is defined as a topological space B equipped with a continuous action of a topological semigroup S ...
Fozaiyah Alhubairah, Adem Kiliçman, Maryam F. Alshammari, Altaf Alshuhail   +3 more
doaj   +1 more source

K-Theory for Semigroup C*-Algebras and Partial Crossed Products. [PDF]

Commun Math Phys, 2022
Li X.
europepmc   +1 more source

Homotopy theory for topological semigroups [PDF]

, 2002
We define the homotopy theory for topological semigroups and study some of its basic properties. The notions of the retract, the contractible space, the fibration, and the cofibration are extended to topological semigroups.
Čerin, Zvonko
core   +1 more source

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
doaj   +1 more source