The Singular Numbers of the Sum of Completely Continuous Operators
The relation between the singular numbers (s-numbers) of a sum of completely continuous operators and the singular numbers of the individual terms has been studied in [1–4]. In particular, the results of  allow us to introduce a symmetric norm (see ) in some ideals of the ring R of all bounded linear operators acting in Hilbert space.
KeywordsContinuous Operator Consultant Bureau Hermitian Matrice Fredholm Determinant Singular Number
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