✦ LIBER ✦
Koplienko–Neidhardt trace formula for pairs of contraction operators and pairs of maximal dissipative operators
✍ Scribed by S. A. M. Marcantognini; M. D. Morán
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 180 KB
- Volume
- 279
- Category
- Article
- ISSN
- 0025-584X
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✦ Synopsis
Abstract
We present a generalization of Koplienko–Neidhardt trace formula for pairs of Hilbert space operators (T , V ) with T contractive and V unitary such that T – V is a Hilbert–Schmidt operator. We extend the result to pairs of contractions and then, via Cayley transform, to pairs of maximal dissipative operators. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)