Abstract
This paper is continuation of paper Ammar et al. (Mediterr J Math 12(4):1377–1395, 2015). It gives some new results related to the pseudospectra and the essential pseudospectra of linear relations. We start by studying the stability of these pseudospectra and some characterization.
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Ammar, A., Daoud, H. & Jeribi, A. The stability of pseudospectra and essential pseudospectra of linear relations. J. Pseudo-Differ. Oper. Appl. 7, 473–491 (2016). https://doi.org/10.1007/s11868-016-0150-3
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DOI: https://doi.org/10.1007/s11868-016-0150-3