On certain spectral features inherent to scalar type spectral operators
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Keywords:
Spectral gap, scalar type spectral operatorAbstract
Important spectral features such as the emptiness of the residual spectrum, countability of the point spectrum, provided the space is separable, and a characterization of spectral gap at 0, known to hold for bounded scalar type spectral operators, are shown to naturally transfer to the unbounded case.References
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