Título inglés |
Diffeomorphisms of Rn with oscillatory jacobians. |
Título español |
Difeomorfismos de Rn con jacobianos oscilatorios. |
Autor/es |
Oliva, Waldyr M. ; Kuhl, Nelson M. ; Magalhâes, Luiz T. |
Organización |
Dep. Appl. Math. Inst. Mat. Statist. Univ. Sâo Paulo, Sâo Paulo, Brasil;Dep. Math. Tech. Univ. Lisboa., Lisboa, Portugal |
Revista |
0214-1493 |
Publicación |
1993, 37 (2): 255-269, 6 Ref. |
Tipo de documento |
articulo |
Idioma |
Inglés |
Resumen inglés |
The paper presents, mainly, two results: a new proof of the spectral properties of oscillatory matrices and a transversality theorem for diffeomorphisms of Rn with oscillatory jacobian at every point and such that NM(f(x) - f(y)) ≤ NM(x - y) for all elements x,y Î Rn, where NM(x) - 1 denotes the maximum number of sign changes in the components zi of z Î Rn, where all zi are non zero and z varies in a small neighborhood of x. An application to a semiimplicit discretization of the scalar heat equation with Dirichlet boundary conditions is also made. |
Clasificación UNESCO |
120210 |
Palabras clave español |
Difeomorfismos ; Matriz jacobiana ; Ecuación del calor ; Problema de Dirichlet |
Código MathReviews |
MR1249230 |
Acceso al artículo completo |