Results 11 to 20 of about 365 (176)

Uniformizable functional Alexandroff spaces

open access: yes, 2023
In the following text we show that the Alexandroff space $X$ is uniformizable if and only if the collection of all smallest neighbourhoods is a partition of $X$. Moreover the Alexandroff space $X$ is uniformizable and functional Alexandroff ($k-$primal) if and only if the collection of all smallest neighbourhoods is a partition of $X$ into its finite ...
Ayatollah Zadeh Shirazi, Fatemah   +3 more
openaire   +3 more sources

Free paratopological groups

open access: yesApplied General Topology, 2015
Let FP(X) be the free paratopological group on a topological space X in the sense of Markov. In this paper, we study the group FP(X) on a $P_\alpha$-space $X$ where $\alpha$ is an infinite cardinal and then we prove that the group FP(X) is an Alexandroff
Ali Sayed Elfard
doaj   +4 more sources

On the triviality of flows in Alexandroff spaces [PDF]

open access: yes, 2022
We prove that the unique possible flow in an Alexandroff T0-space is the trivial one. On the way of motivation, we relate Alexandroff spaces with topological hyperspaces.
Chocano Feito, Pedro José   +2 more
core   +5 more sources

Topological realizations of groups in Alexandroff spaces [PDF]

open access: yesRevista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas, 2020
We prove that every group can be realized as the homeomorphism group and as the group of (pointed) homotopy classes of (pointed) self-homotopy equivalences of infinitely many non-homotopy-equivalent Alexandroff spaces.
Pedro J. Chocano   +2 more
openaire   +6 more sources

Necessary or sufficient condition for Alexandroff topological spaces to be cordial graphic

open access: yesResults in Control and Optimization
In this paper, we explore the property of being a cordial graphic and establish that it corresponds to an Alexandroff topological space. We analyze how the characteristics of cordial graphs align with the principles of Alexandroff topology and provide ...
A. Divya, K. Ramya, D. Sasikala
doaj   +2 more sources

The Alexandroff property and the preservation of strong uniform continuity [PDF]

open access: yesApplied General Topology, 2010
In this paper we extend the theory of strong uniform continuity and strong uniform convergence, developed in the setting of metric spaces in, to the uniform space setting, where again the notion of shields plays a key role.
Gerald Beer
doaj   +2 more sources

The Centre of the Spaces of Banach Lattice-Valued Continuous Functions on the Generalized Alexandroff Duplicate [PDF]

open access: yesAbstract and Applied Analysis, 2011
We characterize the centre of the Banach lattice of Banach lattice 𝐸-valued continuous functions on the Alexandroff duplicate of a compact Hausdorff space 𝐾 in terms of the centre of 𝐶(𝐾,𝐸), the space of 𝐸-valued continuous functions on 𝐾.
Faruk Polat
doaj   +2 more sources

On Some Properties of Whyburn Spaces. [PDF]

open access: yesComput Intell Neurosci, 2022
Computational Intelligence and Neuroscience, Volume 2022, Issue 1, 2022.
Mhemdi A, Lazaar S, Dourari K.
europepmc   +2 more sources

The Topology T* on Alexandroff Spaces [PDF]

open access: yes, 2017
The generalized closure operator  induces a topology . In this paper, we study the topology  on lower bounded Alexandroff spaces. We prove that  is a submaximal Alexandroff space. We get some new results about the relation between  and . Then we prove that a subset  in a lower bounded space is closed set if and only if  is
Mahdi, Hisham B., Elostath, Lubna
openaire   +1 more source

On Finite and Artinian To-Alexandroff Spaces [PDF]

open access: yes, 2009
In this thesis, we study Alexandroff spaces which are topological spaces in which arbitrary intersection of open sets is open. We study, among other things, the two papers titled "On finite To- topological spaces" by A. E. El-Atik et al. [4] and "On To- Alexandroff spaces" by H. B. Mahdi et al. [12]. We compare the study of the two papers and study the
Said, Nader Fathi
openaire   +1 more source

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