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We have decided to discontinue the publication of preprints on our preprint server end of 2024. The publication culture within mathematics has changed so much due to the rise of repositories such as ArXiV (www.arxiv.org) that we are encouraging all institute members to make their preprints available there. An institute's repository in its previous form is, therefore, unnecessary. The preprints published to date will remain available here, but we will not add any new preprints here.
Spectral Estimates and Non-Selfadjoint Perturbations of Spheroidal Wave Operators
Felix Finster and Harald SchmidAbstract
We derive a spectral representation for the oblate spheroidal wave operator, which is holomorphic in the aspherical parameter
The proof of the gap estimates is based on detailed estimates for complex solutions of the Riccati equation. The spectral representation for complex
- Received:
- 05.05.04
- Published:
- 05.05.04