Exact a posteriori error control for variational problems via convex
duality and explicit flux reconstruction
Exact a posteriori error control for variational problems via convex
duality and explicit flux reconstruction
A posteriori error estimates are an important tool to bound discretization errors in terms of computable quantities avoiding regularity conditions that are often difficult to establish. For non-linear and non-differentiable problems, problems involving jumping coefficients, and finite element methods using anisotropic triangulations, such estimates often involve large factors, leading to …