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An example of a Lipschitzian function of selfadjoint operators that yields a nonnuclear increase under a nuclear perturbation. (Russian) Zbl 0333.47009


MSC:

47A55 Perturbation theory of linear operators
47A60 Functional calculus for linear operators
47B25 Linear symmetric and selfadjoint operators (unbounded)
47B10 Linear operators belonging to operator ideals (nuclear, \(p\)-summing, in the Schatten-von Neumann classes, etc.)
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