Suchergebnisse - "Inverse theorems in approximation theory"

Direct and inverse theorems in approximation theory for periodic functions in S.B. Stechkin’s papers and the development of these theorems von Ivanov, V. I.

“… S.B. Stechkin made a considerable contribution to the important aspect of approximation theory for periodic functions concerned with direct and inverse …”
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Extremal Problems in Polynomials and Entire Functions von Govil, N. K., Tariq, Q. M.

“… The subject of extremal problems for polynomials and related classes of functions plays an important and crucial role in obtaining inverse theorems in approximation theory …”
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A theorem on approximation by algebraic polynomials of functions with given generalised modulus of smoothness von Potapov, Mikhail K, Berisha, Faton M

“… theorems in approximation theory for it …”
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On a connection between a generalised modulus of smoothness of order~\(r\) and the best approximation by algebraic polynomials von Potapov, Mikhail K, Berisha, Faton M

“… In this paper an asymmetrical operator of generalised translation is introduced, the generalised modulus of smoothness is defined by its means and the direct and inverse theorems in approximation …”
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On coincidence of classes of functions defined by a generalised modulus of smoothness and the appropriate inverse theorem von Berisha, Faton M

“… We also prove the appropriate inverse theorem in approximation theory …”
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