Vasile Lauric
Abstract
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We make some remarks concerning the invariant subspace problem for hyponormal operators. In particular, we bring together various hypotheses that must hold for a hyponormal operator without nontrivial invariant subspaces, and we discuss the existence of such operators.
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We make some remarks concerning the invariant subspace problem for hyponormal operators. In particular, we bring together various hypotheses that must hold for a hyponormal operator without nontrivial invariant subspaces, and we discuss the existence of such operators.
Key concepts: Mathematics, Invariant subspace, Linear subspace, Reflexive operator algebra, Invariant (physics), Invariant subspace problem, Subspace topology, Operator (biology)