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Information × Registration Number 0126U000250, R & D request Title Current problems of linear and nonlinear approximation of functional sets Head Anatolii S. Romanyuk, Доктор фізико-математичних наук Registration Date 15-01-2026 Organization Institute of Mathematics of the National Academy of Sciences of Ukraine popup.description1 The purpose of this work is to create and develop methods for solving a number of important problems in function theory that concern estimates of characteristics of linear and nonlinear approximation of functional sets in linear spaces. popup.nrat_date 2026-01-15 Close