Información del autor
Documentos disponibles escritos por este autor (31)
Añadir el resultado a su cesta Hacer una sugerencia Refinar búsqueda
texto impreso
texto impreso
texto impreso
texto impreso
In a bounded domain Omega we study the existence and uniqueness of entropy solutions of partial derivativeu/partial derivativet + div Phi(u) = f with u(0) = u(0), where Phi is allowed to have some discontinuities of first type.texto impreso
This conference contribution gives a brief introduction to the resolution of some degenerate problems with the L1 theory in open bounded sets. The first part of the work describes well known concepts related to entropy solutions of Kruzhkov and [...]texto impreso
We consider a class of elliptic-hyperbolic degenerate equations g(u) - Delta b(u) + div phi (u) = f with Dirichlet homogeneous boundary conditions and a class of elliptic-parabolic-hyperbolic degenerate equations g(u)(t) - Delta b(u) + div phi ([...]texto impreso
This article studies a filtration problems with nonlinear Darcy’s law, e.g. ~v = ?|rp|q?2rp, where p is the fluid pressure , q > 1, and ~v is the velocity, governed by the mass conservation law div(~v) = 0. This leads to a free boundary problem[...]texto impreso
We consider a free boundary problem related to a stationary flow of fresh and salt water in a coastal aquifer. The flow is governed by a nonlinear Darcy’s law. Existence and uniqueness of a monotone solution are proved.texto impreso
We study a problem related to the lubrication with cavitation arising in bearings. This problem was previously studied by {\it G. Bayada} and {\it M. Chambat} [Boll. Unione Mat. Ital., IV. Ser., B 3, 543-557 (1984)]. They stated the problem and [...]texto impreso
texto impreso
texto impreso
texto impreso
The existence of weak solutions of the Dirichlet problem for nonlinear elliptic equations of the type ?(?/?x j )(a ij (x)u x i +b j (u))+a(x)u=f is proved for nonlinearities b j which are only continuous. The proof is based on the observatio[...]texto impreso
This paper is concerned with the qualitative behavior of solutions of the "dam problem'' for flow of an incompressible fluid through a two-dimensional porous medium. The cross section of the flow region is allowed to have a complicated boundary [...]
