On the spectrum of an odd-order differential operator


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Abstract

Operators generated by a differential expression on a finite closed interval are considered. It is shown that, for any odd integer n, there exist differential operators of order n whose spectrum fills the whole complex plane.

About the authors

A. M. Akhtyamov

“Mathematical Notes,”

Author for correspondence.
Email: akhtyamovam@mail.ru
Russian Federation, Moscow

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