Normality

Mohammed Hichem Mortad
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Mohammed Hichem Mortad: University of Oran 1

Chapter Chapter 23 in Counterexamples in Operator Theory, 2022, pp 441-450 from Springer

Abstract: Abstract A densely defined operator A is said to be normal if ∥ A x ∥ = ∥ A ∗ x ∥ , ∀ x ∈ D ( A ) = D ( A ∗ ) . $$\displaystyle \|Ax\|=\|A^*x\|,~\forall x\in D(A)=D(A^*). $$

Date: 2022
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DOI: 10.1007/978-3-030-97814-3_23

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