Abstract
In this paper, by introducing the class of quasi hereditarily normaloid polaroid operators, we obtain a theoretical and general framework from which Weyl type theorems may be promptly established for many of these classes of operators. This framework also entails Weyl type theorems for perturbations $f(T + A)$, where $A$ is algebraic and commutes with $T,$ and $f$ is an analytic function, defined on an open neighborhood of the spectrum of $T +A$, such that $f$ is non constant on each of the components of its domain.
Citation
T. Prasad. M. H. M. Rashid. "Weyl type theorems for algebraically Quasi-$\mathcal{HNP}$ operators." Ann. Funct. Anal. 6 (3) 262 - 274, 2015. https://doi.org/10.15352/afa/06-3-19
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