Buscar
Mostrando ítems 1-10 de 150
Regularization of discontinuous vector fields on R-3 via singular perturbation
(Springer, 2007-06-01)
Singular perturbations problems in dimension three which are approximations of discontinuous vector fields are studied in this paper. The main result states that the regularization process developed by Sotomayor and Teixeira ...
Regularization of discontinuous vector fields on R-3 via singular perturbation
(Springer, 2007-06-01)
Singular perturbations problems in dimension three which are approximations of discontinuous vector fields are studied in this paper. The main result states that the regularization process developed by Sotomayor and Teixeira ...
First-order system least-squares finite element method for singularly perturbed Darcy equations
(2023)
We define and analyse a least-squares finite element method for a first-order reformulation of a scaled Brinkman model of fluid flow through porous media. We introduce a pseudostress variable that allows to eliminate the ...
Singular perturbation problems for time-reversible systems
(Amer Mathematical Soc, 2005-01-01)
In this paper singularly perturbed reversible vector fields defined in R-n without normal hyperbolicity conditions are discussed. The main results give conditions for the existence of infinitely many periodic orbits and ...
Spike-layered Solutions of Singularly Perturbed Elliptic Problems in a Degenerate Setting
(1999)
In this paper we consider a class of nonlinear singularly perturbed elliptic problems of the form ε2 Δu - u + f(u) = 0 in Ω, for a superlinear, subcritical function f. Here Ω a smooth bounded domain, ε > 0 is a small ...
Singular perturbation problems for time-reversible systems
(Amer Mathematical Soc, 2014)
Singular perturbation problems for time-reversible systems
(Amer Mathematical SocProvidenceEUA, 2005)
Regularization of discontinuous vector fields on R-3 via singular perturbation
(SpringerNew YorkEUA, 2007)
A singular perturbation problem for the p(x)-Laplacian
(Asociación Argentina de Matemática Aplicada, Computacional e Industrial, 2013-06)
We present results for the following singular perturbation problem:
∆p(x)uε := div(|∇uε(x)| p(x)−2∇uε) = βε(uε) + f ε, uε ≥ 0 (Pε(f ε))
in Ω ⊂ RN , where ε > 0, βε(s) = 1 εβ( s ε ), with β a Lipschitz function satisfying ...