Results 11 to 20 of about 719 (129)
Topological semigroups of matrix units and countably compact Brandt $\lambda^0$-extensions of topological semigroups [PDF]
Matematychni Studii, 2009 We show that a topological semigroup of finite partial bijections $\mathscr{I}_\lambda^n$ of an infinite set with a compact subsemigroup of idempotents is absolutely $H$-closed and any countably compact topological semigroup does not contain $\mathscr{I ...
Oleg Gutik, K. Pavlyk, A. Reiter
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On feebly compact inverse primitive (semi)topological semigroups [PDF]
, 2013 We study the structure of inverse primitive feebly compact semitopological and topological semigroups. We find conditions when the maximal subgroup of an inverse primitive feebly compact semitopological semigroup $S$ is a closed subset of $S$ and ...
Oleg Gutik, O. Ravsky
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Axioms, 2018 An (L)-semigroup S is a compact n-manifold with connected boundary B together with a monoid structure on S such that B is a subsemigroup of S. The sum S + T of two (L)-semigroups S and T having boundary B is the quotient space obtained from the ...
John R. Martin
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Brandt Extensions and Primitive Topological Inverse Semigroups
International Journal of Mathematics and Mathematical Sciences, 2010 We study (countably) compact and (absolutely) 𝐻-closed primitive topological inverse semigroups. We describe the structure of compact and countably compact primitive topological inverse semigroups and show that any countably compact primitive topological
Tetyana Berezovski +2 more
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Topological properties of C0 $C^{0}$-solution set for impulsive evolution inclusions
Boundary Value Problems, 2018 In this paper, we study the topological properties to a C0 $C^{0}$-solution set of impulsive evolution inclusions. The definition of C0 $C^{0}$-solutions for impulsive functional evolution inclusions is introduced.
Lu Zhang, Yong Zhou, Bashir Ahmad
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A note on quasi R*-invariant measures on semigroups
International Journal of Mathematics and Mathematical Sciences, 1990 A characterization of quasi r*-invariant measures on metric topological semigroups is obtained by showing that their support has a left group structure thus generalizing previously known results for relatively r*-invariant measures and the topo-algebraic
N. A. Tserpes
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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
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On locally compact semitopological O-bisimple inverse ω-semigroups
Topological Algebra and its Applications, 2018 We describe the structure of Hausdorff locally compact semitopological O-bisimple inverse ω- semigroups with compact maximal subgroups. In particular, we show that a Hausdorff locally compact semitopological O-bisimple inverse ω-semigroup with a compact ...
Gutik Oleg
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Topological Semigroups of Non-Negative Matrices.
, 2018 This paper is devoted primarily to the study of topological semigroups of non-negative matrices. Usually, these semigroups are also assumed to be compact. Theorems on matrices and semigroups, which are germane to the paper, are first presented. Attention
D. Brown
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The structure of fixed-point sets of uniformly lipschitzian semigroups
Collectanea Mathematica, 2012 In this paper, by asymptotic center techniques, we shown that the set of fixed points of a uniformly k-lipschitzian semigroup (one-parameter or left reversible semi-topological) in a uniformly convex Banach space is a retract of the domain if k is close ...
J. Górnicki
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