Istituto di Scienza e Tecnologie dell'Informazione     
Davini C. A Koehler-type method for the approximation of eigenvalues. Internal note IEI-B82-28, 1982.
A Koehler-type method to obtain lower bounds for the eigenvalues of a certain class of operators is presented. The general properties required of a problem for the technique to work are discussed and the connection with other classical methods is analyzed.

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