Estimates for the difference of fractional powers of selfadjoint operators in the case of unbounded perturbations
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Let A0, A1 be positive selfadjoint operators in a Hilbert space, let |·| be the norm in some symmetrically normed ideal of operators, satisjying the majorization condition. In the paper one obtains estimate and also some of its generalizations. Examples, with A0, A1 differential operators, are considered.
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© Plenum Publishing Corporation 1992