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math.FA2018
Functions of perturbed pairs of noncommuting contractions
Aleksei Aleksandrov, Vladimir Peller
We consider functions of pairs of noncommuting contractions on Hilbert space and study the problem for which functions we have Lipschitz type estimates in Schatten--vo…
math.FA2018
Dissipative operators and operator Lipschitz functions
Aleksei Aleksandrov, Vladimir Peller
The purpose of this paper is to obtain an integral representation for the difference of functions of maximal dissipative operators. This representation in terms of…