On the basis property of a two-part trigonometric seriesстатья
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Дата последнего поиска статьи во внешних источниках: 28 октября 2016 г.
Аннотация:Conditions are presented under which two-part trigonometric systems arising in mixed equations
form a Riesz basis in the space of Lebesgue square integrable functions. For such systems, biorthogonal systems
can be obtained in explicit form. As a result, an integral representation of the solution to the Frankl problem
in a special domain can be found. The results are extended to two-part systems of a broader class of functions.