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On the Trace Formula of Perturbation Theory. II

✍ Scribed by Peter Jonas

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
1009 KB
Volume
197
Category
Article
ISSN
0025-584X

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✦ Synopsis

In a previous paper for a class of pairs of operators in a Hilbert space with nuclear ilrllwence or under a more general nuclearity condition there was introduced a spectral shift functional.

I l i w we consider the local integrability of this spectral shift functional, i.e., the problem when this Iiiiict,ional can locally be represented by an integrable function. The general results are then applied 1 0 Imirs of definitizable and locally definitizable unitary operators in a Krein space.

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