Results 291 to 300 of about 5,619,071 (301)

The positiveness and the uniqueness of a solution

Economics Letters, 1985
Abstract This paper presents a sufficient condition which assures the positiveness and uniqueness of a solution for various economic equations and inequality systems.
Takao Fujimoto, Carmen Herrero
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Multiple solutions of positively homogeneous equations [PDF]

Nonlinear Analysis: Theory, Methods & Applications, 2002
The authors study the existence and multiplicity of periodic solutions to the following system \[ u''- Au + \mu u^+ - \nu u^- = v + h(t), \] where \(h\) is a continuous and \(T\)-periodic function, \(v\in \mathbb{R}^N\), and \(A\) is a symmetric matrix. The main results are the following: (1) Under some reasonable assumptions, this system has at least \
FONDA, ALESSANDRO, TORRES P.
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On positive solutions of a semilinear equation

Journal of Mathematical Sciences, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
V. A. Nikishkin, V. A. Kondratiev
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ON POSITIVE SOLUTIONS OF ELLIPTIC EQUATIONS

Mathematics of the USSR-Sbornik, 1971
In this paper the authors study weak solutions of elliptic equations of the form in a bounded domain . It is assumed known about these solutions either that they are positive, or that estimates in certain norms hold for their negative parts. It is assumed moreover that an estimate on the -norm of the solution holds on some subdomain .
T G Pletneva, S D Èĭdel'man, V A Kondrat'ev   +2 more
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Regularity and positivity of the solution

2017
In this section we show a regularity result1 that allows us to say that a nonnegative solution to (2.1.1) is bounded.
María Medina, Enrico Valdinoci, Serena Dipierro   +2 more
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Symmetry-breaking at positive solutions

ZAMP Zeitschrift f�r angewandte Mathematik und Physik, 1987
Boundary value problems of the type \[ (*)\quad \Delta w(x)+f(w(x),\lambda)=0,\quad x\in \Omega;\quad w(x)=0,\quad x\in \partial \Omega, \] are considered, where \(f: {\mathbb{R}}\times {\mathbb{R}}\to {\mathbb{R}}\) is a smooth function, \(\Omega =\{x\in {\mathbb{R}}^ n\); \(\| x\| 0\) for all \(x\in \Omega\) then \(w_ 0\) is spherically symmetric. It
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Positive solutions for a Dirichlet problem

Acta Mathematicae Applicatae Sinica, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Solutions to positioning challenges [PDF]

, 2016
Tony Williams, Peter Reilly
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Positive solutions of

Nonlinear Analysis: Theory, Methods & Applications, 1985
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Positive solution

2022
Conor Mc Guckin, Mary Quirke, Patricia McCarthy   +2 more
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