98-746 Amour L.
Determination Of a Third Order Operator From Two Of Its Spectra (48K, Latex 2e) Dec 8, 98
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Abstract. We consider a complex third order differential operator on a bounded interval with boundary conditions presenting a mixed aspect of the Dirichlet and the periodic problems. It is proved that two spectra are sufficient to determine the operator. This result is valid under readily verifiable hypotheses applying simultaneously to the two spectra.

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