Results 61 to 70 of about 3,535 (248)
Chemistry – A European Journal, EarlyView.We present a machine‐learning framework that predicts the electron localization function (ELF) of dense hydrogen directly from atomic geometry, bypassing explicit electronic‐structure calculations. Trained on ab initio data for fluid hydrogen across multiple pressures, the model achieves high accuracy and reveals pressure‐dependent nonlocal ...
Xiaoyu Wang +5 more
wiley +1 more source
Abstract and Applied Analysis, 2010 The paper is devoted to obtaining the sufficient conditions for Fredholm property for the general boundary value problem of the second-order linear integro-differential equation. Here, the boundary conditions corresponding with the boundary value problem
M. R. Fatemi, N. A. Aliyev
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First order systems of odes with nonlinear nonlocal boundary conditions
Electronic Journal of Qualitative Theory of Differential Equations, 2015 In this article, we prove existence of solutions for a nonlocal boundary value problem with nonlinearity in a nonlocal condition. Our method is based upon Mawhin's coincidence theory.
Igor Kossowski, Bogdan Przeradzki
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AIP Conference Proceedings, 2017 In this work, the stability estimates for the solution of the given problem for hyperbolic-Schrodinger partial differential equations with the multipoint nonlocal boundary condition are obtained. In applications, the stability estimates for the solutions of the mixed type boundary value problems for hyperbolic-Schrodinger equations are established.
Özdemir, Yıldırım, Erdoğan, Sevilay
openaire +2 more sources
Land Degradation &Development, EarlyView.ABSTRACT Coordinating high‐intensity human activities with fragile ecosystems remains a major challenge for global sustainability. Accurate assessment of human–nature coordination (HNC) is critical, yet county‐level variations, underlying drivers, and responses to ecological zoning have seldom been examined simultaneously within a unified framework. We
Qi Liu +4 more
wiley +1 more source
A third order nonlocal boundary value problem at resonance
Electronic Journal of Qualitative Theory of Differential Equations, 2009 We consider the third-order nonlocal boundary value problem \begin{eqnarray*} &&u'''(t) = f(t, u(t)), \quad \mbox{a.e. in } (0, 1),\\ &&u(0) = 0, \, u'(\rho) = 0,\\ &&u''(1) = \lambda[u''], \end{eqnarray*} where $0 < \rho < 1,$ the nonlinear ...
E. Kaufmann
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POSITIVE SOLUTIONS OF NONLOCAL SINGULAR BOUNDARY VALUE PROBLEMS [PDF]
Glasgow Mathematical Journal, 2004 The paper presents the existence result for positive solutions of the differential equation $(g(x))''=f(t,x,(g(x))')$ satisfying the nonlocal boundary conditions $x(0)=x(T)$, $\min\{ x(t): t \in J\}=0$. Here the positive function $f$ satisfies local Carathéodory conditions on $[0,T] \times (0,\infty) \times (\R {\setminus} \{0\})$ and $f$ may be ...
AGARWAL, RAVI P. +2 more
openaire +2 more sources
Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies
Laser &Photonics Reviews, EarlyView.Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil +6 more
wiley +1 more source
Numerical treatment of nonlocal boundary value problem with layer behaviour [PDF]
, 2017 This paper deals with the singularly perturbed nonlocal boundary value problem for a linear first order differential equation. For the numerical solution of this problem, we use a fitted difference scheme on a piecewise uniform Shishkin mesh.
Çakır, Musa, Çimen, Erkan
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One-Sided Nonlocal Boundary-Value Problem for Singular Parabolic Equations [PDF]
, 2001 У просторах класичних функцій із степеневою вагою доведено існування і єдиність розв'язку односторонньої нелокальної крайової задачі для параболічних рівнянь з довільним степеневш порядком виродження коефіцієнтів.
Пукальський, І.Д.
core +4 more sources