Unbounded Nonnormal Operators

Mohammed Hichem Mortad
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Mohammed Hichem Mortad: University of Oran 1

Chapter Chapter 25 in Counterexamples in Operator Theory, 2022, pp 457-464 from Springer

Abstract: Abstract Recall the following definition: An unbounded densely defined operator A is called hyponormal if: (1) D(A) ⊂ D(A ∗), (2) ∥A ∗ x∥≤∥Ax∥ for all x ∈ D(A).

Date: 2022
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DOI: 10.1007/978-3-030-97814-3_25

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