Régularité analytique pour des opérateurs elliptiques singuliers en un point
{ll (uij+aij(x,u, u))=K(x) f(x,u, u) in Rn u| = . dove la curvatura soddisfa in ,
I am presenting a survey of regularity results for both minima of variational integrals, and solutions to non-linear elliptic, and sometimes parabolic, systems of partial differential equations. I will try to take the reader to the Dark Side...
In this article we establish the existence of higher order weak derivatives of weak solutions of Dirichlet problem for a class of degenerate elliptic equations.