| $\mathbf{S}$-PSEUDOSPECTRA AND $\mathbf{S}$-ESSENTIAL PSEUDOSPECTRA |
| A. Ammar, H. Daoud, A. Jeribi |
Abstract In the present paper, we introduce and study the $\mathcal{S}$-pseudospectra and the essential $\mathcal{S}$-pseudospectra of linear relations. We start by giving the definition and we investigate the characterization and some properties of these $\mathcal{S}$-pseudospectra.
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Keywords: Linear relation; $\mathcal{S}$-pseudospectra; $\mathcal{S}$-essential pseudospectra. |
MSC: 47A06 |
Pages: 95--105 |
Volume 72 , Issue 2 , 2020 |
