Abstract
For the spaces Ep(Dn) of functions, defined on the Cartesian product of convex polygons, it is established that a system of exponentials of a special type forms a basis. The dependence of the exponents on the vertices of the polygons is indicated.
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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 42, No. 3, pp. 324–332, March, 1990.
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Ibragimov, G.I. Bases of exponentials in the spaces Ep(Dn) on a poly-polygon and the representation of the functions from this class in the form of sums of periodic functions. Ukr Math J 42, 289–296 (1990). https://doi.org/10.1007/BF01057011
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DOI: https://doi.org/10.1007/BF01057011