engleski

A robust hierarchical eigenvalue/eigenvector enhancement

We prove the reliability and efficiency of a variant hierarchical basis eigenvalue/eigenvector approximation's estimator for a general symmetric and elliptic operator. The reliability estimates hold without any further assumptions save the well-posedness of the associated variational boundary value problem(s). The new estimator extends to general symmetric divergence type operators our earlier result on hierarchical error estimators.

eigenvalue problems; finite element methods

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