Results 291 to 300 of about 1,228,906 (333)

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
where h :R → RN is a continuous and T -periodic function, v is a vector to be 5xed, ; are real numbers and A is a symmetric N × N matrix. Given u∈RN ; we write u= u+ − u−; where u+ denotes the vector whose components are the positive parts of those of u; and similarly for u−: This kind of systems appear, e.g.
FONDA, ALESSANDRO, TORRES P.
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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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Uniqueness of large positive solutions

Zeitschrift für angewandte Mathematik und Physik, 2017
We establish the uniqueness of the positive solution of the singular problem (1.1) through some standard comparison techniques involving the maximum principle. Our proofs do not invoke to the blow-up rates of the solutions, as in most of the specialized literature. We give two different types of results according to the geometrical properties of
Julián López-Gómez, Luis Maire
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On positive solutions of a semilinear equation

Journal of Mathematical Sciences, 1996
A semilinear elliptic equation is considered in a domain with smooth boundary. The authors prove the existence and uniqueness of positive solutions of different types, singular at an inner point, subject to the Dirichlet boundary conditions. Bibliography: 13 titles.
V. A. Nikishkin, V. A. Kondratiev
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Eigenvalue conditions and positive solutions

Journal of Difference Equations and Applications, 2000
We are concerned with proving the existence of positive solutions of general two point boundary value problems for the nonlinear equation . Here the independent variable t is in a “measure chain”. We will use fixed point theorems for operators on a Banach space.
Lynn Erbe, Allan Peterson
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A Survey of Train Positioning Solutions

IEEE Sensors Journal, 2017
Positioning accurately and safely a train is nowadays a great challenge. That includes currently available railway sensors and new candidate sensors for data fusion. Global Navigation Satellite System and Inertial Measurement Unit sensors arise as prominent technologies to incorporate in railways.
Jon Otegui, Alfonso Bahillo, Iban Lopetegi, Luis Enrique Diez   +3 more
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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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