Approximation of the Spectrum of Closed Operators: The Determination of Normal Modes of a Rotating Basin
Jean Descloux, Mitchell Luskin, Jacques Rappaz · Mathematics of Computation · 1981
This paper gives a theory of spectral approximation for closed operators in Banach spaces. The perturbation theory developed in this paper is applied to the study of a finite element procedure for approximating the spectral properties of a differential system modeling a fluid in a rotating basin.