Results 121 to 130 of about 278,852 (350)

Fixed Point Theory of Weak Contractions in Partially Ordered Metric Spaces

open access: yesJournal of Applied Mathematics, 2013
We prove two new fixed point theorems in the framework of partially ordered metric spaces. Our results generalize and improve many recent fixed point theorems in the literature.
Chi-Ming Chen   +2 more
doaj   +1 more source

Aging and the Spectral Properties of Brain Hemodynamics

open access: yesAdvanced Science, EarlyView.
As the brain ages, its metabolic demands decline—but not uniformly. Here, spectral slope flattening of resting‐state fMRI signals is proposed as a potential biomarker of pathologic brain aging. A subset of older adults diverges from youthful spectral and metabolic patterns, with changes linked to frontal white matter pathology and regional loss of ...
Ki Yun Park   +9 more
wiley   +1 more source

Some Remarks on G-Metric Spaces and Fixed Point Theorems

open access: yesInternational Journal of Analysis and Applications, 2014
We notice some remarks on G-metric spaces and the fixed point results of contractive mappings defined on such spaces. Our results generalize, extend and complement recent fixed point theorems established by  Jleli and Samet [M. Jleli and B.
Vesna Cojbasic Rajic
doaj   +2 more sources

Two fixed-point theorems

open access: yesMathematical Notes, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +4 more sources

Mechanical Metamaterial‐Based Structure with Magnetically Controlled Nonreversibility and Nonreciprocity for Programmable Locomotion

open access: yesAdvanced Science, EarlyView.
A magneto‐mechanical metamaterial‐based structure that simultaneously exhibits programmable nonreversibility and nonreciprocity. These cause substantial transitions in static mechanical properties, such as Poisson's ratio and stiffness, leading to stark changes in energy absorption.
Krzysztof K. Dudek   +3 more
wiley   +1 more source

Duality Fixed Point and Zero Point Theorems and Applications

open access: yesAbstract and Applied Analysis, 2012
The following main results have been given. (1) Let E be a p-uniformly convex Banach space and let T:E→E* be a (p-1)-L-Lipschitz mapping with condition ...
Qingqing Cheng   +2 more
doaj   +1 more source

A Systematic Computational Framework for Practical Identifiability Analysis in Mathematical Models Arising from Biology

open access: yesAdvanced Science, EarlyView.
A systematic computational framework is developed for practical identifiability analysis in biological models. The framework establishes a rigorous definition, introduces efficient coordinate‐based identifiability metrics, and proposes novel regularization strategies.
Shun Wang, Wenrui Hao
wiley   +1 more source

Fixed points, intersection theorems, variational inequalities, and equilibrium theorems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
From a fixed point theorem for compact acyclic maps defined on admissible convex sets in the sense of Klee, we first deduce collectively fixed point theorems, intersection theorems for sets with convex sections, and quasi-equilibrium theorems.
Sehie Park
doaj   +1 more source

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