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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.06417 |
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Table of Contents:
- Asymptotics of the eigenvalues can always be derived for self-adjoint boundary value problems. However, they can also be derived for boundary value problems that fail to be self-adjoint provided that they are Birkhoff regular. A regular sixth-order differential equation that depends quadratically on the eigenvalue parameter $λ$ is considered with classes of separable boundary conditions independent of $λ$ or depending linearly on $λ$. Conditions are given for the problems to be Birkhoff regular.