sigmoid-colon 发表于 2025-3-25 04:36:35
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8 Bounded Perturbations of Nonselfadjoint Operators,nvertibility conditions and bounds for the spectra of such operators. In particular, we consider perturbations of the von Neumann - Schatten operators and operators with von Neumann - Schatten Hermitian components.预感 发表于 2025-3-25 11:45:20
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16 Hille - Tamarkin Integral Operators,e inverse operators and positive invertibility conditions are established. In addition, bounds for the spectral radius are suggested. Applications to nonselfadjoint differential operators and integro-differential ones are also discussed.银版照相 发表于 2025-3-26 03:02:02
17 Integral Operators in Space ,,,sitive invertibility conditions are established. In addition, bounds for the spectral radius are suggested. Applications to nonselfadjoint differential operators and integro-differential ones are also discussed.无聊点好 发表于 2025-3-26 06:09:03
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3 Invertibility of Finite Matrices,The present chapter deals with various types of invertibility conditions for finite matrices. In particular, we improve the classical Levy-Desplanques theorem and other well-known invertibility results for matrices that are close to triangular ones.