The object of this paper is a theoretical study of the convergence of approximation methods (Galerkin and finite difference methods) to compute eigenelements of a closed linear operator T in a Banach ...

SIAM Journal on Numerical Analysis, Vol. 36, No. 1 (Nov., 1998 - Jan., 1999), pp. 251-274 (24 pages) This paper is concerned with the derivation of a priori and a ...