Results 21 to 30 of about 271 (88)

Feebly compact paratopological groups and real-valued functions [PDF]

open access: yes, 2012
We present several examples of feebly compact Hausdorff paratopological groups (i.e., groups with continuous multiplication) which provide answers to a number of questions posed in the literature.
Sanchis López, Manuel   +1 more
core   +2 more sources

Notes on Remainders of Paratopological Groups [PDF]

open access: yesBulletin of the Belgian Mathematical Society - Simon Stevin, 2014
The remainder of a Tychonoff topological space \(X\) is the subspace \(bX\setminus X\) of some compactification \(bX\) of \(X\). The authors study remainders of paratopological and of semitopological groups \(G\), in particular they relate properties of \(G\) with properties of the remainder \(bG\setminus G\).
Wang, Hanfeng, He, Wei
openaire   +3 more sources

Baire property in product spaces

open access: yesApplied General Topology, 2015
We show that if a product space $\mathit\Pi$ has countable cellularity, then a dense subspace $X$ of $\mathit\Pi$ is Baire provided that all projections of $X$ to countable subproducts of $\mathit\Pi$ are Baire.
Constancio Hernández   +2 more
doaj   +1 more source

p-Boundedness in paratopological groups

open access: yesTopology and its Applications, 2015
Let \(G\) be a paratopological group with neutral element \(e\). \(G\) is said to be \(\omega\)-admissible if for every sequence \(\{U_n:n\in\omega\}\) of open neighborhoods of \(e\) there there exists a subgroup \(H\subseteq\bigcap_{n\in\omega}U_n\) such that \(G/H\) is submetrizable. \(G\) is said to be \(\omega\)-balanced if for every neighborhood \(
Sánchez, Iván, Sanchis, Manuel
openaire   +2 more sources

The diagonal of a first countable paratopological group, submetrizability, and related results

open access: yesApplied General Topology, 2007
We discuss some properties stronger than Gδ-diagonal. Among other things, we prove that any first countable paratopological group has a Gδ-diagonal of infinite rank and hence also a regular Gδ-diagonal.
A.V. Arhangelskii, Angelo Bella
doaj   +1 more source

o-Tightness in paratopological groups

open access: yesTopology and its Applications, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xie, Li-Hong, Zhang, Hai-Chan
openaire   +1 more source

On feebly compact paratopological groups [PDF]

open access: yesTopology and its Applications, 2020
We obtain many results and solve some problems about feebly compact paratopological groups. We obtain necessary and sufficient conditions for such a group to be topological. One of them is the quasiregularity. We prove that each $2$-pseudocompact paratopological group is feebly compact and that each Hausdorff $ $-compact feebly compact paratopological
Taras Banakh, Alex Ravsky
openaire   +3 more sources

More on remainders close to metrizable spaces [PDF]

open access: yes, 1950
This article is a natural continuation of [A.V. Arhangel'skii, Remainders in compactifications and generalized metrizability properties, Topology Appl. 150 (2005) 79–90]. As in [A.V.
Arhangel'skii, A.V.
core   +1 more source

Variations of selective separability and tightness in function spaces with set open topologies [PDF]

open access: yes, 2016
We study tightness properties and selective versions of separability in bitopological function spaces endowed with set-open topologies.Comment: 19 ...
Osipov, Alexander V., Özçağ, Selma
core   +2 more sources

Notes on paratopological groups

open access: yesTopology and its Applications, 2013
In this paper, all topological spaces are assumed to be Hausdorff. A paratopological group is a group with a topology such that the product operation is continuous. The paper contains two results: {\parindent=6mm \begin{itemize}\item[(1)] Let \(G\) be a paratopological group, \(bG\) a Hausdorff compactification of \(G\).
Li, Piyu, Mou, Lei
openaire   +1 more source

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