In this paper we investigate the relationship between some spectra originating from Fredholm theory of a Drazin invertible operator and its Drazin inverse, if this does exist. Moreover, we study the transmission of Weyl type theorems from a Drazin invertible operator R, to its Drazin inverse S.
Aiena, P., Triolo, S. (2016). Fredholm Spectra and Weyl Type Theorems for Drazin Invertible Operators. MEDITERRANEAN JOURNAL OF MATHEMATICS, 13(6), 4385-4400 [10.1007/s00009-016-0751-3].
Fredholm Spectra and Weyl Type Theorems for Drazin Invertible Operators
AIENA, Pietro;TRIOLO, Salvatore
2016-01-01
Abstract
In this paper we investigate the relationship between some spectra originating from Fredholm theory of a Drazin invertible operator and its Drazin inverse, if this does exist. Moreover, we study the transmission of Weyl type theorems from a Drazin invertible operator R, to its Drazin inverse S.
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