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On the deficiency index of even order symmetric differential expressions with essential spectrum

✍ Scribed by Marian P. Roque; Bernd Schultze


Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
96 KB
Volume
284
Category
Article
ISSN
0025-584X

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✦ Synopsis


Abstract

It shall be shown that for every n, \documentclass{article}\usepackage{amssymb}\pagestyle{empty}\begin{document}$k \in \mathbb {N}$\end{document} with n β©½ k < 2__n__, there exist real symmetric differential expressions M of order 2__n__ with nonempty essential spectrum such that d(M) = k. Β© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim


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