Affiliation:
1. University of Sfax, Faculty of Sciences of Sfax, Department of Mathematics, Sfax, Tunisia
Abstract
One impetus for writing this paper is the issue of approximation
pseudospectrum introduced by M. P. H.Wolff in the journal of approximation
theory (2001). The latter study motivates us to investigate the essential
approximation pseudospectrum of closed, densely defined linear operators on a
Banach space. We begin by defining it and then we focus on the
characterization, the stability and some properties of these pseudospectra.
Publisher
National Library of Serbia
Cited by
11 articles.
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