Results 41 to 50 of about 77,924 (297)

On fixed point results for alpha-implicit contractions in quasi-metric spaces and consequences

open access: yesNonlinear Analysis, 2016
In this paper, we prove some fixed point results involving α-implicit contractions in quasi-metric spaces. Moreover, we provide some known results on G-metric spaces.
Hassen Aydi   +2 more
doaj   +1 more source

Embedding quasi-metric spaces in hilbert space

open access: yesAequationes Mathematicae, 1981
Let \((X,\delta)\) be a quasi-metric set. The author discusses the problem of embedding this set in some vector space equipped with a quadratic form i.e. if \(\delta\) is \(\mu\)-square summable with \(\mu\) being a finite positive measure on X, then \((X,\delta\),\(\mu)\) can be embedded almost everywhere in \(\ell^ 2\) (space of all square-summable ...
openaire   +1 more source

Double Controlled Quasi Metric Like Spaces

open access: yesSymmetry, 2022
In this article, we present a generalization of the double controlled metric like spaces, called quasi double controlled metric like spaces, by assuming that the symmetric condition is not necessary satisfied. Moreover, the self distance is not necessary zero.
Salma Haque   +3 more
openaire   +1 more source

Intelligent Tutoring Systems for Adult Learning in STEM Disciplines

open access: yesNew Directions for Adult and Continuing Education, EarlyView.
ABSTRACT Intelligent tutoring systems (ITS) are reshaping adult learning in STEM by providing adaptive, data‐driven instruction across classrooms, workplaces, and informal environments. In the context of ITS, this article compares generative AI, which creates personalized explanations and practice materials, with explainable AI, which focuses on ...
Jill Zarestky, Amanda R. Lager Gleason
wiley   +1 more source

A metric approach to limit operators

open access: yes, 2017
We extend the limit operator machinery of Rabinovich, Roch, and Silbermann from Z^N to (bounded geometry, strongly) discrete metric spaces. We do not assume the presence of any group structure or action on our metric spaces.
Spakula, Jan, Willett, Rufus
core   +1 more source

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito   +14 more
wiley   +1 more source

Families of quasi-pseudo-metrics generated by probabilistic quasi-pseudo-metric spaces [PDF]

open access: yesSurveys in Mathematics and its Applications, 2007
This paper contains a study of families of quasi-pseudo-metrics (the concept of a quasi-pseudo-metric was introduced by Wilson, Albert and Kelly) generated by probabilistic quasi-pseudo-metric-spaces which are generalization of probabilistic metric ...
Mariusz T. Grabiec   +2 more
doaj  

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky   +5 more
wiley   +1 more source

On the extension of partial metrics and quasi-metrics

open access: yesApplied General Topology
In a recent article, V. Mykhaylyuk and V. Myronyk investigated the problem of extending partial metrics and quasi-metrics. Concretely, they stated, and proved, as a main result that if A is a closed subset of a partially metrizable space (X,τ) then every
Salvador Romaguera, Pedro Tirado
doaj   +1 more source

On half-completion and bicompletion of quasi-metric spaces [PDF]

open access: yes, 1996
summary:We characterize the quasi-metric spaces which have a quasi-metric half-comp\-le\-tion and deduce that each paracompact co-stable quasi-metric space having a quasi-metric half-completion is metrizable.
Salvador Romaguera   +3 more
core  

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