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Perturbation Theory of Deficiency Indices of Differential Operators

✍ Scribed by Zettl, A.

Book ID
120096189
Publisher
Oxford University Press
Year
1976
Tongue
English
Weight
190 KB
Volume
s2-12
Category
Article
ISSN
0024-6107

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## Abstract We investigate the spectral theory of a general third order formally symmetric differential expression of the form acting in the Hilbert space ℒ︁^2^~__w__~ (__a__ ,∞). A Kummer–Liouville transformation is introduced which produces a differential operator unitarily equivalent to __L__