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Weak forms of supercyclity and a class of paranormal operators
2014
Mathematical Inequalities & Applications
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In this paper, we give several properties of class A operators, an interesting subclass of paranormal operators. In particular, we consider the operators T ∈ L (H ) such that T − λ is a class A operator for every λ ∈ C . We also provide some cases for class A operators to have a nontrivial invariant subspace. Finally, we prove that there are no N -supercyclic class A operators with trivial kernel for any positive integer N and that weakly supercyclic class A operators with trivial kernel must
doi:10.7153/mia-17-61
fatcat:hqrgfjdjavhvxnvppsx4v2ykqm