## Isotropic and anisotropic a posteriori error estimation of the mixed finite element method for second order operators in divergence form

Serge Nicaise and Emmanuel Creusé

### Abstract

This paper presents an a posteriori residual error estimator for the mixed FEM of second order operators using isotropic or anisotropic meshes in ${\bf R}^{d}$, $d=2$ or $3$. The reliability and efficiency of our estimator is established without any regularity assumptions on the solution of our problem.

Full Text (PDF) [431 KB]

### Key words

error estimator, stretched elements, mixed FEM, anisotropic solution.

65N15, 65N30.

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