Results 91 to 100 of about 77,924 (297)

Double-Controlled Quasi M-Metric Spaces

open access: yes, 2023
One of the well-studied generalizations of a metric space is known as a partial metric space. The partial metric space was further generalized to the so-called M-metric space.
Ng Zhen Chuan   +2 more
core   +1 more source

Spatially Modulated Morphotropic Phase Boundaries in a Compressively Strained Multiferroic Thin Film

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT The coexisting rhombohedral‐like (R′, MA) and tetragonal‐like (T′, MC) monoclinic phases in compressively strained bismuth ferrite thin films exhibit exceptional piezoelectric and magnetic properties. While previous studies have largely focused on probing the morphotropic phase boundaries (MPBs) comprising ordered R′/T′ twins, their self ...
Ting‐Ran Liu   +7 more
wiley   +1 more source

Polymer Interface Enables Reversible Quasi‐Solid Sulfur Conversion in Sodium‐Sulfur Batteries

open access: yesAdvanced Functional Materials, EarlyView.
The polymer interface enables a stable quasi‐solid sulfur conversion pathway in room‐temperature Na─S batteries. The coating regulates Na+ transport, stabilizes the cathode–electrolyte interphase, and accommodates mechanical stress, suppressing electrolyte decomposition and sulfur migration, thereby improving reaction uniformity, reducing polarization,
Reza Andaveh   +12 more
wiley   +1 more source

Fixed points of contractive dominated mappings on a closed ball in an ordered quasi partial metric space

open access: yesLe Matematiche, 2015
In this paper, we obtain some fixed point theorems for dominated mappings satisfying locally contractive conditions on a closed ball in a left K-sequentially O-complete ordered quasi-partial metric space and in a right K-sequentially O-complete ordered ...
M. Arshad, A. Shoaib, Ismat Beg
doaj  

On completeness in quasi-metric spaces

open access: yesTopology and its Applications, 1988
A quasi-metric on a set X is a non-negative real-valued function d defined on \(X\times X\) for which \(d(x,y)=0\) if and only if \(x=y\) and \(d(x,y)\leq d(x,y)+d(y,z)\) for any x, y, and z in X. Each metric on X is clearly a quasi-metric, and each quasi-metric on X induces a quasi- uniformity and quasi-uniform topology in the usual manner. The author
openaire   +2 more sources

The injective hull of ultra-quasi-metric versus q-hyperconvex hull of quasi-metric space

open access: yes, 2016
For any partially ordered set equipped with its natural T0-quasi-metric (T0-ultra-quasi-metric), we study the connection between the ultra-quasi-metrically injective hull and the q-hyperconvex hull.
Otafudu, Olivier Olela
core   +1 more source

A DIRECTED GRAPH ASSOCIATED WITH A T-0-QUASI-METRIC SPACE

open access: yes, 2022
Given a T-0-quasi-metric space we associate a directed graph with it and study some properties of the related directed graph. The present work complements and refines earlier work in the field in which the symmetry graph of a T-0-quasi-metric space was ...
YILDIZ, F. I. L. I. Z.   +1 more
core   +1 more source

Rationally Designed Bilayer Passivation Strategy for High‐Performance Vacuum‐Processed Perovskite Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
A bilayer “Anchor‐and‐Seal” passivation strategy using EDAI2 and 4MeO‐PEAI effectively mitigates surface defects in vacuum‐processed perovskite films through synergistic hydrogen bonding and Lewis base coordination. This approach optimizes interfacial energy alignment and suppresses non‐radiative recombination, enabling vacuum‐deposited p‐i‐n ...
Mohammadhossein Kohan   +4 more
wiley   +1 more source

Quasi-Metric Spaces, Quasi-Metric Hyperspaces and Uniform Local Compactness

open access: yes, 1999
We show that every locally compact quasi-metrizable Moore space admits a uniformly locally compact quasi-metric. We also observe that every equinormal quasi-metric is conally complete. Finally we prove that for any small-set symmetric quasi-uniform space,
Hans-peter A. Künzi   +3 more
core  

Arzela Ascoli Theorem in Quasi Cone Metric Space

open access: yes, 2022
In this paper we investigate Arzela Ascoli Theorem in quasi cone metric space, which is a generalization of metric space. We prove some interesting results using forward and backward toplologies, forward and backward continuity and forward and backward ...
Sharma, Shallu   +2 more
core  

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