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Mostrando ítems 21-30 de 36
Artículo
Sobre la paralelización de problemas elípticos
(Sociedad Española de Matemática Aplicada, 2005-03)
En este trabajo se recogen dos de los problemas que aparecen a la hora de resolver numéricamente las ecuaciones de Navier-Stokes. La discretización en la variabletemporal en dichas ecuaciones nos conduce, en cada etapa ...
Artículo
Recent results on stabilization of PDEs by noise
(Sociedad Española de Matemática Aplicada, 2006-12)
This paper is intended to be a brief review on some recent results on the stabilization effect produced by noise in phenomena modelled by partial differential equations. We emphasyse the different effects that distinct ...
Artículo
Nonlinear age-dependent diffusive equations: a bifurcation approach
(Elsevier, 2008-05-01)
The main goal of this paper is the study of the existence and uniqueness of positive solutions of some nonlinear age-dependent diffusive models, arising from dynamic populations. We use bifurcation method, for which it has ...
Artículo
Control theory: history, mathematical achievements and perspectives
(Sociedad Española de Matemática Aplicada, 2003-12)
These notes are devoted to present some of the mathematical milestones of Control Theory. To do that, we first overview its origins and some of the main mathematical achievements. Then, we discuss the main domains of ...
Artículo
Combining fast, linear and slow diffusion
(Juliusz Schauder Center for Nonlinear Studies, 2004)
Although the pioneering studies of G. I. Barenblatt ([8] G. I. Barenblatt, On some unsteady motions of a liquid or a gas in a porous medium, Prikl. Mat. Mekh. 16 (1952), 67–68) and A. G. Aronson and L. A. Peletier ([7] ...
Artículo
An eigenvalue problem for non-bounded quasi-linear operator
(Cambridge University Press, 2004-06)
In this paper we study the eigenvalues associated with a positive eigenfunction of a quasilinear elliptic problem with a not necessarily bounded operator. For that, we use the bifurcation theory and obtain the existence ...
Artículo
Nonnegative solutions to an elliptic problem with nonlinear absorption and a nonlinear incoming flux on the boundary
(Springer, 2008-07)
In this paper we perform an extensive study of the existence, uniqueness (or multiplicity) and stability of nonnegative solutions to the semilinear elliptic equation −∆u = λu − u p in Ω, with the nonlinear boundary condition ...
Artículo
Local strong solution for the incompressible Korteweg model
(Elsevier, 2006-02)
We consider a Navier-Stokes type system with a Korteweg stress tensor, coupled with a concentration equation without diffusion. We give a result concerning the local in time existence (and uniqueness) of strong solution ...
Artículo
Upper and lower solutions for first order problems with nonlinear boundary conditions
(Universidad de Extremadura, 2003)
Artículo
Positive solutions for the degenerate logistic indefinite superlinear problem the slow diffusion case
(University of Houston, 2003)
In this work we study the existence, stability and multiplicity of the positive steady-states solutions of the degenerate logistic indefinite superlinear problem. By an adequate change of variable, the problem is transformed ...