Pathology of essential spectra of elliptic problems in periodic family of beads threaded by a spoke thinning at infinity (Q2039132)
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scientific article; zbMATH DE number 7367175
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Pathology of essential spectra of elliptic problems in periodic family of beads threaded by a spoke thinning at infinity |
scientific article; zbMATH DE number 7367175 |
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Pathology of essential spectra of elliptic problems in periodic family of beads threaded by a spoke thinning at infinity (English)
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2 July 2021
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Summary: We construct ``almost periodic'' unbounded domains, where a large class of elliptic spectral problems have essential spectra possessing peculiar structure: they consist of monotone, non-negative sequences of isolated points and thus have infinitely many gaps.
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essential spectrum
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wave-guide
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spectral gap
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almost periodic unbounded domains
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