Corrigendum: ‘‘Finite element-Galerkin approximation of the eigenvalues and eigenvectors of selfadjoint problems” [Math.\ Comp.\ {\bf 52} (1989), no.\ 186, 275–297; MR0962210 (89k:65132)]
Ivo M. Babuska, John E. Osborn · Mathematics of Computation · 1994
We are grateful to Christopher A. Beattie for pointing out an error in the proof of Lemma 3.5, and for a suggestion regarding a correct proof.With EhiXk.)defined (on the bottom of p. 281) as the orthogonal projection of HB onto MiXk) , formula (3.17b