03-93 Sergei Naboko and Roman Romanov
Spectral Singularities and Asymptotics of Contractive Semigroups. I. (66K, LaTeX 2e) Mar 5, 03
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Abstract. The problem of localization of spectral singularities of dissipative operators in terms of the asymptotic of the corresponding exponential function is studied. We give a solution to this problem for the singularities of higher orders in the frame of the perturbation theory.

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