- 99-30 Fritz Gesztesy, Konstantin A. Makarov, and Serguei N. Naboko
- The Spectral Shift Operator
(94K, LaTeX)
Jan 25, 99
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Abstract. We introduce the concept of a spectral shift operator and use it to derive Krein's spectral shift function for pairs of self-adjoint operators. Our principal tools are operator-valued Herglotz functions and their logarithms.
Applications to Krein's trace formula and to the Birman-Solomyak spectral averaging formula are discussed.
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