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Fractional powers of self-adjoint operators and Trotter-Kato product formula. (English) Zbl 0945.47030
The authors study error estimates in the operator norm topology for the Trotter-Kato product formula under the assumption that fractional powers of the perturbation are dominated by the fractional powers of the unperturbed operator.

47D03 Groups and semigroups of linear operators
47B25 Linear symmetric and selfadjoint operators (unbounded)
41A80 Remainders in approximation formulas
Full Text: DOI
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