$\textit{A priori}$ and $\textit{a posteriori}$ error identities for the
scalar Signorini problem
$\textit{A priori}$ and $\textit{a posteriori}$ error identities for the
scalar Signorini problem
In this paper, on the basis of a (Fenchel) duality theory on the continuous level, we derive an $\textit{a posteriori}$ error identity for arbitrary conforming approximations of the primal formulation and the dual formulation of the scalar Signorini problem. In addition, on the basis of a (Fenchel) duality theory on …