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Information × Registration Number 0213U003471, 0111U007125 , R & D reports Title Modern investigation methods of nonlinear approximative characteristics of some functional compact sets. popup.stage_title Head Shidlich Andriy Lyubomyrovych, Доктор фізико-математичних наук Registration Date 05-02-2013 Organization Institute of mathematics NAS of Ukraine popup.description2 We found order estimates of approximations by "greedy" approximants, the best n-term orthogonal trigonometric approximations and the best n-term trigonometric approximation of certain classes of periodic functions of several variables in the metric of the space Lp and S^p. We obtain the asymtotyc equalities for the best uniform approximations by trigonometric polynomials classes infinitely differentiable periodic functions, defined by modules of continuity. Product Description popup.authors Соколенко Ігор Володимирович popup.nrat_date 2020-04-02 Close