In this work we study equations that describe laminar flow through a rigid isotropic granular (non consolidated) porous medium subjected to a external force field. Firstly we present the meaning of the many phisical terms ...

In this work, we study existence and non existence for the Dirichlet problem for the minimal graph equation in non convex domains of the plane. We search for conditions on the boundary data which be the less restricted ...

In this work we approach a double Euler-Bernoulli beam system with axial force coupled by an elastic layer. We performed a matrix formulation for the system of equations and for the boundary conditions, which allows ...

The main purpose of this dissertation is to propose and analyze the effects of pursuit and evasion on predator-prey spatiotemporal dynamics. We use a Coupled Map Lattices formulation in which a system of difference equations ...

In this paper, we present numerical results obtained from the FORTRAN language for physical quantities of interest such as velocity profile, pro�le, heat ow rate, particle ow rate,heat ux and pressure tensor component. The ...

Mark V. Lawson, in the book "Inverse Semigroups: The Theory of partial symmetries", provides a very relevant study of the characteristics of inverse semigroups, including Wagner-Preston Theorem of Representation, ...

In this paper, we present numerical results for macroscopic quantities of interest (velocity profile, the heat ow profile and shear stress) for the ow of a binary mixture of rarefied gases in microchannels of arbitrary ...

In this work we present the lifting method [AS2], which is used to classify certain class of Hopf algebras. Since this method is based on the coradical filtration, it can be used just for those Hopf algebras satisfying the ...

In this work we present the proof of a result due to Lars Hörmander which establishes a necessary condition for a linear operator with variable coefficients is globally resolvable.

In this dissertation we present a proof of a Bernard Malgrange theorem, which establishes a necessary and sufficient condition for the global solvability of a linear operator with constant coefficients.