Results 71 to 80 of about 20,286 (160)
Weak Quasi-Contact Metric Manifolds and New Characteristics of K-Contact and Sasakian Manifolds
MathematicsQuasi-contact metric manifolds (introduced by Y. Tashiro and then studied by several authors) are a natural extension of contact metric manifolds. Weak almost-contact metric manifolds, i.e., where the linear complex structure on the contact distribution ...
Vladimir Rovenski
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Closed mappings and quasimetrics [PDF]
Proceedings of the American Mathematical Society, 1980 Closed continuous mappings with first countable images preserve quasi-metric spaces as well as nonarchimedean quasi-metric spaces and γ
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New fixed point results in quasi-metric spaces and applications in fractals theory
Advances in Difference Equations, 2019 In this paper, we prove some fixed point theorems for ψF-contractions in the framework of quasi-metric spaces generalizing and improving several similar results in metric spaces.
Nicolae Adrian Secelean +2 more
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Preservation of completeness under mappings in asymmetric topology
Applied General Topology, 2000 The preservation of various completeness properties in the quasi-metric (and quasi-uniform) setting under open, closed and uniformly open mappings is investigated.
Hans-Peter A. Künzi
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Common Fixed Point under Nonlinear Contractions on Quasi Metric Spaces
Mathematics, 2019 We introduce in this article the notion of ( ψ , ϕ ) - quasi contraction for a pair of functions on a quasi-metric space. We also investigate the existence and uniqueness of the fixed point for a couple functions under that contraction.
Wasfi Shatanawi, Kamaleldin Abodayeh
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Quasi-metrics and monotone normality
Topology and its Applications, 2011 The purpose of this paper is to study which quasi-metrizable spaces are monotonically normal. In particular, we provide a sufficient condition for a quasi-metrizable space to be monotonically normal. This enables us to prove the monotone normality of a certain amount of interesting examples of quasi-metric spaces; for instance, we show that the ...
Gutiérrez García, Javier +2 more
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Invariant Measures in Quasi-Metric Spaces
Zeitschrift für Analysis und ihre Anwendungen, 2003 We prove that in separable, complete, quasi-metric spaces there exists exactly one probability measure with bounded support, invariant with respect to given families of contractions and weights. The invariant measure has compact support and is an attractor in the space of probability measures with bounded support equipped with a metric defined in term ...
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Fixed Point Results in Quasi-Cone Metric Spaces
Abstract and Applied Analysis, 2013 The main aim of this paper is to prove fixed point theorems in quasi-cone metric spaces which extend the Banach contraction mapping and others. This is achieved by introducing different kinds of Cauchy sequences in quasi-cone metric spaces.
Fawzia Shaddad, Mohd Salmi Md Noorani
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, 2001 40 pages, no figures, LaTeX; v3: connection changed; v4: extended and local conservation laws changed; v5: major revision; v7: must have non-universal gravitational coupling; v8: rewritten with fully coupled theory; v9: major revision (fully coupled theory abandoned); v12: inconsistent equation replaced (oh well).
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Analysis of Caputo-Type Non-Linear Fractional Differential Equations and Their Ulam–Hyers Stability
Fractal and FractionalThis study presents two novel frameworks, termed a quasi-modular b-metric space and a non-Archimedean quasi-modular b-metric space, and various topological properties are provided.
Ekber Girgin +4 more
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