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| Main Authors: | , |
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| Format: | Preprint |
| Udgivet: |
1998
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| Fag: | |
| Online adgang: | https://arxiv.org/abs/math/9810063 |
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Indholdsfortegnelse:
- We define the concept of instability index of an isolated eigenvalue of a non-self-adjoint operator, and prove some of its general properties. We also describe a stable procedure for computing this index for Schroedinger operators in one dimension, and apply it to the complex resonances of a typical operator with a dilation analytic potential.