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Criteria for discrete spectrum of singular selfadjoint differential operators

Author: L. W. Rollins
Journal: Proc. Amer. Math. Soc. 34 (1972), 195-200
MSC: Primary 47E05; Secondary 34B25
MathSciNet review: 0291883
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Abstract: Under certain conditions on the coefficients of symmetric singular differential operators of order 2n, selfadjoint extensions are shown to have a discrete spectrum. The results are proven specifically for the Friedrichs extension.

References [Enhancements On Off] (What's this?)

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Keywords: Singular differential operators, selfadjoint extensions, spectrum
Article copyright: © Copyright 1972 American Mathematical Society