M. Hemeed, E., A. Habeeb, N. (2012). On Spectrum of unperturbed Second Derivative Operator. Alustath, 2(2), 117-121.
Ehsan M. Hemeed; Nadia A. Habeeb. "On Spectrum of unperturbed Second Derivative Operator". Alustath, 2, 2, 2012, 117-121.
M. Hemeed, E., A. Habeeb, N. (2012). 'On Spectrum of unperturbed Second Derivative Operator', Alustath, 2(2), pp. 117-121.
M. Hemeed, E., A. Habeeb, N. On Spectrum of unperturbed Second Derivative Operator. Alustath, 2012; 2(2): 117-121.

On Spectrum of unperturbed Second Derivative Operator

Journal of College of Education for Pure Science
Article 1, Volume 2, Issue 2, June 2012, Pages 117-121
Authors
Ehsan M. Hemeed; Nadia A. Habeeb
Abstract
Spectrum of the unperturbed second derivative operator is investigated. Spectral asymptotics for operator is calculated. It is proven that the gaps between the spectral bands disappear when .
Keywords
Spectral asymptotics; differential operator; spectral theory
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