V. N. Levchuk

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Articles: 1

On a function system making a basis in a weight space

V. A. Zolotarev, V. N. Levchuk

↓ Abstract   |   Article (.pdf)

Methods Funct. Anal. Topology 23 (2017), no. 3, 261-269

We find necessary and sufficient conditions for systems of functions generated by a second order differential equation to form a basis. The results are applied to show that Mathieu functions make a basis.

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