Results 21 to 30 of about 517 (102)

On a semitopological semigroup $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ when a family $\mathscr{F}$ consists of inductive non-empty subsets of $\omega$

open access: yesМатематичні Студії, 2023
Let $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ be the bicyclic semigroup extension for the family $\mathscr{F}$ of ${\omega}$-closed subsets of $\omega$ which is introduced in \cite{Gutik-Mykhalenych=2020}.
O. V. Gutik, M. S. Mykhalenych
doaj   +1 more source

On pseudocompact topological Brandt λ0-extensions of semitopological monoids

open access: yesTopological Algebra and its Applications, 2013
Gutik Oleg, Pavlyk Kateryna
doaj   +2 more sources

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

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

Compactifications of semitopological semigroups II [PDF]

open access: yesJournal of the Australian Mathematical Society, 1976
AbstractCorrecting some “proofs” given in an earlier paper of the same title, we prove here, among other things, that, if S is a subgroup of a topological group that is complete in a left invariant metric or locally compact, then every weakly almost periodic function on S is (left and right) uniformly continuous.
openaire   +2 more sources

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

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

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

Home - About - Disclaimer - Privacy