Results 101 to 110 of about 49,072 (124)

Compact Connected Ordered Semitopological Semigroups†

open access: closedJournal of the London Mathematical Society, 1972
John F. Berglund
openalex   +2 more sources

Ultrafilters on Semitopological Semigroups

Semigroup Forum, 2004
It has been known since the sixties that the Stone-Čech compactification of a discrete semigroup can be given a natural structure of a compact right topological semigroup. In [\textit{N. Hindman} and \textit{D. Strauss}, Algebra in the Stone-Čech compactification: theory and applications (de Gruyter Expositions in Mathematics 27) (1998; Zbl 0918.22001)]
Tootkaboni, M. A., Riazi, A.
openaire   +1 more source

On Semitopological Bicyclic Extensions of Linearly Ordered Groups

Journal of Mathematical Sciences, 2019
For a linearly ordered group G , we define a subset A ⊆ G to be a shift-set if, for any x, y, z ϵ A with y < x, we get x · y-1 ··z ϵ A. We describe the natural partial order and solutions of equations on the semigroup B(A) of shifts of positive cones of ...
O. Gutik, K. Maksymyk
semanticscholar   +2 more sources

Semitopological groups, semiclosure semigroups and quantales

Fuzzy Sets and Systems, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Han, Shengwei, Xia, Changchun, Zhao, Bin
openaire   +1 more source

Common fixed points in Chebyshev center for a semigroup of isometry mappings

Topological Methods in Nonlinear Analysis
In this article, we prove that if $K$ is a nonempty weakly compact convex set having the normal structure in a Banach space $B$ and $\mathfrak{F}$ is a left reversible semitopological semigroup of isometry mappings from $K$ into itself, then there exists
Sharma Abhishek   +1 more
semanticscholar   +1 more source

Semitopological semigroups satisfying S 2 =S on finite trees are topological

SemiGroup Forum, 1999
The purpose of this paper is to prove the following theorem: If a semitopological semigroup \(S\) is defined on a finite tree and if \(S^2=S\), then \(S\) is a topological semigroup. Let \(M(S)\) denote the minimal ideal of \(S\), and \(m(s)\) the single element contained in the intersection of all arcs \([m,s]\cap M(S)\).
openaire   +1 more source

Semitopological Semigroups on Circles†

Journal of the London Mathematical Society, 1972
openaire   +1 more source

Compact semitopological semigroups

1967
J. F. Berglund, K. H. Hofmann
openaire   +1 more source

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