Results 231 to 240 of about 2,467,258 (262)

FIBREWISE BICOMPLETE QUASI-UNIFORM SPACES

Far East Journal of Mathematical Sciences (FJMS), 2015
Summary: We introduce the notion of complete quasi-uniform spaces over a base space \(B\) and give some properties of these spaces. We introduce a general method to obtain fibrewise completion of quasi-uniform spaces over \(B\) and give internal descriptions of fibrewise completions for two different types.
Park, Jin Won, Lee, Byung Sik
openaire   +2 more sources

A concept of completeness of quasi-uniform spaces [PDF]

Topology and Its Applications, 1991
We define a notion of completion for quasi-uniform spaces in a categorical manner, and construct such completions for a large class of spaces (called quiet quasi-uniform spaces).
Doitchinov, Doitchin
exaly   +2 more sources

On Optimization Problems in Quasi-uniform Spaces

Third International Conference on Natural Computation (ICNC 2007), 2007
This paper is concerned with optimization problems in T0 quasi-uniform spaces. Many optimization problems such as vector optimization, set-valued optimization, are unified in the quasi-uniform space to have a simple expression. Firstly, the proposition that a quasi-uniform space is T0 if and only if the intersection of all entourages of the quasi ...
Shao-ai Chen, Wen Li, Du Zou, Shaobai Chen   +3 more
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Completeness in probabilistic quasi-uniform spaces

Fuzzy Sets and Systems, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yueli Yue, Jinming Fang
openaire   +3 more sources

Cowellpoweredness of Some Categories of Quasi-Uniform Spaces

Applied Categorical Structures, 2018
It is known that there is no example of a subcategory of the category $\mathbf{Unif}$ of uniform spaces that is non-cowellpowered. This paper is concerned with cowellpoweredness of subcategories of $\mathbf{QUnif}$, the category of quasi-uniform spaces, and shows that it has is a lot of cowellpowered and non-cowellpowered subcategories.
Dikran Dikranjan, Hans-Peter A. Künzi
openaire   +2 more sources

*-Compactifications of quasi-uniform spaces

Studia Scientiarum Mathematicarum Hungarica, 2007
By a *-compactification of a T0 quasi-uniform space ( X, U ) we mean a compact T0 quasi-uniform space ( Y, V ) that has a T ( V ∨ V−1 )-dense subspace quasi-isomorphic to ( X, U ). We prove that ( X, U ) has a *-compactification if and only if its T0 biocompletion \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts}
Salvador Romaguera, Miguel Sánchez-Granero   +1 more
openaire   +1 more source

Stability in quasi-uniform spaces and the inverse problem [PDF]

Topology and Its Applications, 1993
We study the concept of a stable quasi-uniform space due to D. Doitchivov. In particular quasi-pseudo-metric spaces (X,d) whose associated quasi-uniformities U(d) or U(d-1) are stable are ...
Hans-Peter A Kunzi, Heikki J K Junnila
exaly   +2 more sources

Completeness of Quasi-Uniform and Syntopological Spaces

Journal of the London Mathematical Society, 1994
Because of the unusual gap between the submission date of this paper, July 8, 1989, and its publication date, the paper has already had considerable impact as a preprint. With the retrospective view provided in this way, it is easy to specify the paper's importance: the paper establishes that by suitably modifying certain standard definitions the ...
openaire   +2 more sources

Quasi-uniform entropy under free semigroup actions on quasi-uniform spaces

Dynamical Systems
Xiaojun Huang, Zhongxuan Yang
exaly   +2 more sources

Variational principles in quasi-uniform spaces and quasi-gauge spaces

Optimization
International audienceIn this article, we obtain an extension of the Ekeland variational principle in quasi-uniform spaces. Since the Ekeland variational principle is a type of perturbed optimization problem, the perturbations do not need to satisfy the ...
Jafar Zafarani, Majid Fakhar
exaly   +2 more sources