Results 51 to 60 of about 4,149,754 (381)

Positive solutions of a singular fractional boundary value problem with a fractional boundary condition [PDF]

open access: yesOpuscula Mathematica, 2017
For \(\alpha\in(1,2]\), the singular fractional boundary value problem \[D^{\alpha}_{0^+}x+f\left(t,x,D^{\mu}_{0^+}x\right)=0,\quad 0\lt t\lt 1,\] satisfying the boundary conditions \(x(0)=D^{\beta}_{0^+}x(1)=0\), where \(\beta\in(0,\alpha-1]\), \(\mu\in(
Jeffrey W. Lyons, Jeffrey T. Neugebauer
doaj   +1 more source

Fixed point theory and nonlinear problems [PDF]

open access: yesBulletin of the American Mathematical Society, 1983
Introduction. Among the most original and far-reaching of the contributions made by Henri Poincare to mathematics was his introduction of the use of topological or "qualitative" methods in the study of nonlinear problems in analysis. His starting point was the study of the differential equations of celestial mechanics, and in particular of their ...
openaire   +3 more sources

Periodic travelling wave solutions of discrete nonlinear Schr\"odinger equations

open access: yes, 2017
The existence of nonzero periodic travelling wave solutions for a general discrete nonlinear Schr\"odinger equation (DNLS) on finite one-dimensional lattices is proved.
Hennig, Dirk
core   +2 more sources

Fixed points and quasi-equilibrium problems

open access: yesMathematical and Computer Modelling, 2000
A fixed-point theorem for compact acyclic maps defined on convex subsets of not-necessarily locally convex topological vector spaces is applied to the existence of solutions of quasi-equilibrium problems. Such existence theorems extend known ones which were used for unified approaches to quasi-variational inequalities in [1-5] and others.
openaire   +2 more sources

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

open access: yesPopulation Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

Tenth order boundary value problem solution existence by fixed point theorem

open access: yesJournal of Inequalities and Applications, 2020
In this paper we consider the Green function for a boundary value problem of generic order. For a specific case, the Leray–Schauder form of the fixed point theorem has been used to prove the existence of a solution for this particular equation.
Nicola Fabiano   +4 more
doaj   +1 more source

Discussion on the fixed point problems with constraint inequalities

open access: yesJournal of Inequalities and Applications, 2018
In this paper, we introduce the concept of comparable complete metric spaces and consider some fixed point theorems for mappings in the setting of incomplete metric spaces. We obtain the results of Ansari et al. [J. Fixed Point Theory Appl. 20:26, 2018] with weaker conditions. Moreover, we provide some corollaries and examples show that our main result
Badr Alqahtani   +3 more
openaire   +4 more sources

Existence and Uniqueness of a Transient State for the Coupled Radiative-Conductive Heat Transfer Problem

open access: yes, 2018
This paper deals with existence and uniqueness results for a transient nonlinear radiative-conductive system in three-dimensional case. This system describes the heat transfer for a grey, semi-transparent and non-scattering medium with general boundary ...
Ghattassi, Mohamed   +2 more
core   +2 more sources

The power of microRNA regulation—insights into immunity and metabolism

open access: yesFEBS Letters, EarlyView.
MicroRNAs are emerging as crucial regulators at the intersection of metabolism and immunity. This review examines how miRNAs coordinate glucose and lipid metabolism while simultaneously modulating T‐cell development and immune responses. Moreover, it highlights how cutting‐edge artificial intelligence applications can identify miRNA biomarkers ...
Stefania Oliveto   +2 more
wiley   +1 more source

Hybrid Iterations for the Fixed Point Problem and Variational Inequalities

open access: yesJournal of Applied Mathematics, 2014
A hybrid iterative algorithm with Meir-Keeler contraction is presented for solving the fixed point problem of the pseudocontractive mappings and the variational inequalities. Strong convergence analysis is given as limn→∞d(STxn,TSxn).
Li-Jun Zhu   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy