Essential g-Ascent and g-Descent of a Closed Linear Relation in Hilbert Spaces

We define and discuss for a closed linear relation in a Hilbert space the notions of essential g-ascent (resp. g-descent) and g-ascent (resp. g-descent) spectrums. We improve in the Hilbert space case some results given by E. Chafai in a Banach space [Acta Mathematica Sinica, 34 B, 1212-1224, 2014]...

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Bibliographic Details
Main Authors: Zied Garbouj, Haı̈kel Skhiri
Format: Article
Language:English
Published: University of Extremadura 2017-12-01
Series:Extracta Mathematicae
Subjects:
Online Access:https://publicaciones.unex.es/index.php/EM/article/view/377