Results 61 to 70 of about 7,754 (304)

Some results for fixed point theorem on hyperbolic metric space and application to constrained minimization problems

open access: yesDemonstratio Mathematica
The focus of this article is to present a novel iterative scheme and to establish the △-convergence theorem for the Reich-Suzuki type nonexpansive mappings in hyperbolic metric spaces.
Kheawborisut Araya, Kangtunyakarn Atid
doaj   +1 more source

On the theorem of wan for K-quasiconformal hyperbolic harmonic self mappings of the unit disk [PDF]

open access: yesMathematica Moravica, 2015
We give a new glance to the theorem of Wan (Theorem 1.1) which is related to the hyperbolic bi-Lipschicity of the K-quasiconformal, K ≥ 1, hyperbolic harmonic mappings of the unit disk D onto itself.
Knežević Miljan
doaj  

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Metric domains, holomorphic mappings and nonlinear semigroups

open access: yesAbstract and Applied Analysis, 1998
We study nonlinear semigroups of holomorphic mappings on certain domains in complex Banach spaces. We examine, in particular, their differentiability and their representations by exponential and other product formulas.
Simeon Reich, David Shoikhet
doaj   +1 more source

Quasi-cosmological traversable wormholes in f(R) gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
In this paper, we study traversable wormholes in the context of f(R) gravity. Exact solutions of traversable wormholes are found by imposing the nonconstant Ricci scalar. These solutions asymptotically match spherical, flat and hyperbolic FRW metric.
Hanif Golchin, Mohammad Reza Mehdizadeh
doaj   +1 more source

Joule-Thomson expansion of hyperscaling violating black holes with spherical and hyperbolic horizons

open access: yesNuclear Physics B, 2020
We study the Joule-Thomson expansion of spherical and hyperbolic black holes with hyperscaling violating metric background. We compute the Joule-Thomson coefficient and inversion temperature for two horizons. Also, we investigate the effects of dynamical
J. Sadeghi, R. Toorandaz
doaj   +1 more source

Circulating microRNA signatures of cachexia and cancer in Canis familiaris as a comparative oncology model for human disease

open access: yesMolecular Oncology, EarlyView.
Circulating microRNAs as biomarkers of cachexia and sex‐specific cancer in senior dogs. In 25 client‐owned dogs, four circulating miRNAs (miR‐15a, miR‐15b, miR‐16, miR‐140) were downregulated in cachexia, with miR‐16 the strongest individual biomarker (AUC = 0.899).
Soon‐Seok Park   +6 more
wiley   +1 more source

D-metric Spaces and Composition Operators Between Hyperbolic Weighted Family of Function Spaces

open access: yesCubo, 2020
The aim of this paper is to introduce new hyperbolic classes of functions, which will be called ${\mathcal{B}}^{*} _{\alpha,\;\log}$ and ${ F ^{*}_{\log}}(p,q,s)$ classes.
A. Kamal, T.I. Yassen
doaj   +1 more source

On the Hyperbolic Metric of Certain Domains

open access: yesComputational Methods and Function Theory
We prove that if $E$ is a compact subset of the unit disk ${\mathbb D}$ in the complex plane, if $E$ contains a sequence of distinct points $a_n\not= 0$ for $n\geq 1$ such that $\lim_{n\to\infty} a_n=0$ and for all $n$ we have $ |a_{n+1}| \geq \frac{1}{2} |a_n| $, and if $G={\mathbb D} \setminus E$ is connected and $0\in \partial G$, then there is a ...
Aimo Hinkkanen, Matti Vuorinen
openaire   +2 more sources

Estimates for the hyperbolic metric [PDF]

open access: yesKodai Mathematical Journal, 1985
The object of the paper is to provide estimates for the hyperbolic metric in terms of geometric quantities. Suppose X is a region in the complex plane \({\mathbb{C}}\) such that \({\mathbb{C}}\setminus X\) contains at least two points. Let \(\lambda_ X(z)| dz|\) be the hyperbolic metric on X and \(\delta_ X(z)=dist(z,\partial X)\). If \(\Delta (X)=\sup
openaire   +3 more sources

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