The Discreteness of Spectrum of a Class of Differential Operators With Coefficients for the Product of Euler Coefficients and Exponential Functions
2014
The discreteness of spectrum of a class of differential operators with coefficients for the product of Euler coefficients and exponential functions is discussed.In terms of direct sum decomposition method of operators and comparison method of the corresponding quadratic forms,we establish some sufficient conditions for the discreteness of spectrum.
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