Penalty approximation method for a class of elliptic variational inequality problems ?
In this paper, two existence results of solutions for a class of elliptic variational inequalities are obtained by considering the approximations of the solutions to a class of penalized differential equations.
approximation elliptic variational inequality penalized differential equation sobolev space mapping of class (s)+ ( s ) + (s)+ ( s ) + (s)+ ( s ) + ( s ) +