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Information × Registration Number 0215U003754, 0112U002701 , R & D reports Title Harmonic and spectral analysis of functions and operators, convolution equations and approximation of functions popup.stage_title Head Trigub Roald Mikhailovich, Registration Date 23-03-2015 Organization Donetsk National University popup.description2 A description for kernel of Radon transform is obtained. A new two-radii theorems have been found. An applications for the theory of redefine interpolation problems are considered. A connection between the order and the type of an entire function and the speed of the best polynomial approximation for normed linear spaces is obtained. A theorems for completeness and basis of eigen and associated vectors for systems of differential equations are investigated. Product Description popup.authors Буряченко Катерина Олександрівна Волчков Віталій Володимирович Волчков Валерій Володимирович Горбань Юлія Сергіївна Деркач Володимир Олександрович Заставний Віктор Петрович Ковальов Іван Михайлович Савостьянова Ірина Михайлівна Тригуб Роальд Михайлович Трофименко Ольга Дмитрівна popup.nrat_date 2020-04-02 Close