We establish the basic property of the system of eigenfunctions and the positivity of the Green function for a self-adjoint boundary value problem of a functional-differential equation of even order.

quadratic functional, periodic positive solutions, spectrum.

Received: October 8, 2022; Accepted: November 15, 2022; Published: December 5, 2022

How to cite this article: Elena Alves, Manuel Alves and Sergey Labovskiy, On periodic spectral problem for a functional-differential equation of even order, Far East Journal of Applied Mathematics 115 (2022), 61-68. http://dx.doi.org/10.17654/0972096022018

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References:

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