Results 41 to 50 of about 49,072 (124)

Totally disconnected semigroup compactifications of topological groups [PDF]

open access: yesQuarterly Journal of Mathematics, 2022
We introduce the notion of an introverted Boolean algebra $\mathcal{B}$ of closed-and-open subsets of a topological group G show that the associated Stone space $(\nu_{\mathcal{B}} G, \nu_{\mathcal{B}})$ is a totally disconnected semigroup ...
A. Stephens, Ross Stokke
semanticscholar   +1 more source

Central Sets Theorem Near of an Idempotent in Wap-Compactification

open access: yesJournal of Function Spaces, 2023
A small part of real line which is very close to zero has rich combinatorial properties. The aim of this paper is to express and then prove some locally combinatorial concepts near a virtual idempotent by considering the wap-compactification of a ...
Ali Pashapournia   +2 more
doaj   +1 more source

On a topological simple Warne extension of a semigroup [PDF]

open access: yes, 2012
In the paper we introduce topological $\mathbb{Z}$-Bruck-Reilly and topological $\mathbb{Z}$-Bruck extensions of (semi)topological monoids which are generalizations of topological Bruck-Reilly and topological Bruck extensions of (semi)topological monoids
Fihel, Iryna   +2 more
core   +3 more sources

On a locally compact monoid of cofinite partial isometries of ℕ with adjoined zero

open access: yesTopological Algebra and its Applications, 2022
Let 𝒞ℕ be a monoid which is generated by the partial shift α : n↦n +1 of the set of positive integers ℕ and its inverse partial shift β : n + 1 ↦n. In this paper we prove that if S is a submonoid of the monoid Iℕ∞ of all partial cofinite isometries of ...
Gutik Oleg, Khylynskyi Pavlo
doaj   +1 more source

On feebly compact topologies on the semilattice $\exp_n\lambda$ [PDF]

open access: yes, 2016
We study feebly compact topologies $\tau$ on the semilattice $\left(\exp_n\lambda,\cap\right)$ such that $\left(\exp_n\lambda,\tau\right)$ is a semitopological semilattice. All compact semilattice $T_1$-topologies on $\exp_n\lambda$ are described.
Gutik, Oleg, Sobol, Oleksandra
core   +1 more source

Preduals of semigroup algebras [PDF]

open access: yes, 2010
For a locally compact group G, the measure convolution algebra M(G) carries a natural coproduct. In previous work, we showed that the canonical predual C 0(G) of M(G) is the unique predual which makes both the product and the coproduct on M(G) weak ...
Daws, M., Pham, H-L., White, S.
core   +1 more source

Quantum Dynamical Semigroups and Decoherence

open access: yesAdvances in Mathematical Physics, Volume 2011, Issue 1, 2011., 2011
We prove a version of the Jacobs‐de Leeuw‐Glicksberg splitting theorem for weak* continuous one‐parameter semigroups on dual Banach spaces. This result is applied to give sufficient conditions for a quantum dynamical semigroup to display decoherence. The underlying notion of decoherence is that introduced by Blanchard and Olkiewicz (2003).
Mario Hellmich, Christian Maes
wiley   +1 more source

On Nonexpansive and Expansive Semigroup of Order-Preserving Total Mappings in Waist Metric Spaces

open access: yesJournal of Nigerian Society of Physical Sciences, 2022
In this paper, we introduce nonexpansive and expansive semigroup of order-preserving total mappings (ONTn) and (OETn), respectively, to prove some fixed point theorems in waist metric spaces.
O. T. Wahab   +3 more
doaj   +1 more source

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