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Information × Registration Number 0214U002668, 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 23-01-2014 Organization Donetsk National University popup.description2 An exact order of approximation by Bernstein- Stechkin polynomials is found. Classes of positive definite functions are investigated. Explicit inversion formulas for the Pompeiu transformation are constructed. Resolvents of self-adjoint extensions of symmetric operators are described in terms of generalized boundary triplets. A criterion of singularity of generalized J-inner matrix functions is obtained. A linear space of minimal differential operators subordinated to the tensor product of two elliptic differential polynomials is described. Product Description popup.authors Байдюк Дмитро Віталійович Василянська Вероніка Сергіївна Волчков Віталій Володимирович Волчков Валерій Володимирович Деркач Володимир Олександрович Заставний Віктор Петрович Кузьменко Олена Олегівна Ліманський Дмитро Володимирович Оридорога Леонід Леонідович Савостьянова Ірина Михайлівна Тригуб Роальд Михайлович Трофименко Ольга Дмитрівна popup.nrat_date 2020-04-02 Close
R & D report
Head: Trigub Roald Mikhailovich. Harmonic and spectral analysis of functions and operators, convolution equations and approximation of functions. (popup.stage: ). Donetsk National University. № 0214U002668
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Updated: 2026-03-21