Abstract.
In this note we show that if either T or T* is totally *-paranormal then Weyl’s theorem holds for f(T) for every f \( \in H (\sigma (T)) \) , and also a-Weyl’s theorem holds for f(T) if T is totally *-paranormal. We prove that if either T or T* is *-paranormal then the spectral mapping theorem holds for the Weyl spectrum and for the essential approximate point spectrum.
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Han, Y., Kim, AH. A Note on *-paranormal Operators. Integr. equ. oper. theory 49, 435–444 (2004). https://doi.org/10.1007/s00020-002-1217-5
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DOI: https://doi.org/10.1007/s00020-002-1217-5