Results 1 to 10 of about 179 (112)

∗-half completeness in quasi-uniform spaces

open access: yesApplied General Topology, 2009
Romaguera and Sánchez-Granero (2003) have introduced the notion of T1∗-half completion and used it to see when a quasi-uniform space has a ∗-compactification. In this paper, for any quasi-uniform space, we construct a ∗-half completion, called standard ∗-
Athanasios Andrikopoulos
doaj   +6 more sources

Sequential Completeness for ⊤-Quasi-Uniform Spaces and a Fixed Point Theorem

open access: yesMathematics, 2022
We define sequential completeness for ⊤-quasi-uniform spaces using Cauchy pair ⊤-sequences. We show that completeness implies sequential completeness and that for ⊤-uniform spaces with countable ⊤-uniform bases, completeness and sequential completeness ...
Gunther Jäger
doaj   +3 more sources

The scale of a quasi-uniform space [PDF]

open access: yesActa Mathematica Hungarica, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Olivier Olela Otafudu
exaly   +2 more sources

Completeness in quasi-uniform spaces

open access: yesActa Mathematica Hungarica, 2004
The author defines and studies another kind of completeness for quasi-uniform spaces, based on Cauchy-pairs of nets. He constructs an accompanying completion and compares his definition with other notions of completeness and completions.
Athanasios Andrikopoulos
exaly   +3 more sources

Completeness in Quasi-Pseudometric Spaces—A Survey

open access: yesMathematics, 2020
The aim of this paper is to discuss the relations between various notions of sequential completeness and the corresponding notions of completeness by nets or by filters in the setting of quasi-metric spaces.
Ştefan Cobzas
doaj   +1 more source

Τ-quasi-Cauchy spaces - a non-symmetric theory of completeness and completion

open access: yesApplied General Topology, 2023
Based on the concept of Cauchy pair Τ-filters, we develop an axiomatic theory of completeness for non-symmetric spaces, such as Τ-quasi-uniform (limit) spaces or L-metric spaces.
Gunther Jäger
doaj   +1 more source

Weak completeness of the Bourbaki quasi-uniformity

open access: yesApplied General Topology, 2001
The concept of semicompleteness (weaker than half-completeness) is defined for the Bourbaki quasi-uniformity of the hyperspace of a quasi-uniform space.
M.A. Sánchez Granero
doaj   +1 more source

Equivalents of maximum principles for several spaces

open access: yesTopological Algebra and its Applications, 2022
According to our long-standing Metatheorem, certain maximum theorems can be equivalently reformulated to various types of fixed point theorems, and conversely.
Park Sehie
doaj   +1 more source

Quasi-uniform convergence topologies on function spaces- Revisited

open access: yesApplied General Topology, 2017
Let X and Y be topological space and F(X,Y) the set of all functions from X into Y. We study various quasi-uniform convergence topologies U_{A} (A⊆P(X)) on F(X,Y) and their comparison in the setting of Y a quasi-uniform space.
Wafa Khalaf Alqurash, Liaqat Ali Khan
doaj   +1 more source

On quasi-uniform box products

open access: yesApplied General Topology, 2017
We revisit the computation of entourage sections of the constant uniformity of the product of countably many copies the Alexandroff one-point compactification called the Fort space. Furthermore, we define the concept of a quasi-uniformity on a product of
Olivier Olela Otafudu, Hope Sabao
doaj   +1 more source

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