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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Aiena, P., Triolo, S. Fredholm Spectra and Weyl Type Theorems for Drazin Invertible Operators. Mediterr. J. Math. 13, 4385–4400 (2016). https://doi.org/10.1007/s00009-016-0751-3
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DOI: https://doi.org/10.1007/s00009-016-0751-3