Аннотация:
Рассматривается базисность систем экспонент, косинусов и синусов, которые являются собственными функциями обыкновенного дифференциального оператора с краевыми условиями, содержащими спектральный параметр. Получен аналог теоремы М. И. Кадеца для систем косинусов и синусов. Установлены некоторые аналоги
в банаховых пространствах результатов Н. К. Бари и Пэли–Винера о базисности Рисса близких систем.
Библиогр. 12 назв.
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