An extension of the Koplienko–Neidhardt trace formulae
Koplienko (Sibirsk. Mat. Zh. 25(5) (1984) 62) found a trace formula for perturbations of self-adjoint operators by operators of Hilbert Schmidt class S 2 . A similar formula in the case of unitary operators was obtained by Neidhardt (Math. Nachr. 138 (1988) 7). In this paper we improve their results...
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Published in | Journal of functional analysis Vol. 221; no. 2; pp. 456 - 481 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Elsevier Inc
15.04.2005
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Subjects | |
Online Access | Get full text |
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Summary: | Koplienko (Sibirsk. Mat. Zh. 25(5) (1984) 62) found a trace formula for perturbations of self-adjoint operators by operators of Hilbert Schmidt class
S
2
. A similar formula in the case of unitary operators was obtained by Neidhardt (Math. Nachr. 138 (1988) 7). In this paper we improve their results and obtain sharp conditions under which the Koplienko–Neidhardt trace formulae hold. |
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ISSN: | 0022-1236 1096-0783 |
DOI: | 10.1016/j.jfa.2004.10.004 |