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Floquet theory for left-definite Sturm-Liouville problems |
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| Authors: | M. Marletta A. Zettl |
| Abstract: | We determine the essential spectrum of left-definite Sturm-Liouville problems with periodic coefficients and a weight function which changes sign. |
| Keywords: | Sturm-Liouville Spectrum Left-definite Periodic coefficients Floquet theory |
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