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 theorems …”
Volltext

Inverse Theorems on the Approximation of Periodic Functions with High Generalized Smoothness von Runovskii, K. V., Laktionova, N. V.

Volltext

Bernstein-Type Estimates for Periodic Functions of Several Variables with Generalized Smoothness von Laktionova, N. V., Runovskii, K. V., Shpyrko, O. A.

“… The generalized -derivative in the space of -periodic functions of variables integrable to the th power for and continuous for , which are respectively …”
Volltext

INVERSE THEOREMS OF APPROXIMATION THEORY IN Lp,α(R+) Vol. 3(2) July 2015, No. 6, pp. 92-99 R. DAHER, S. EL OUADIH

Volltext

Some Theorems of Approximation Theory in Weighted Smirnov Classes with Variable Exponent von Testici, Ahmet

“… Moreover, direct and inverse theorems of approximation theory in weighted Smirnov classes with variable exponent are proved and some results related to constructive characterization in generalized …”
Volltext

Direct and inverse approximation theorems for the p-version of the finite element method in the framework of weighted Besov spaces, part III: Inverse approximation theorems von Guo, Benqi, Babuška, Ivo

“… This is the third of a series devoted to the direct and inverse approximation theorems of the p-version of the finite element method in the framework of the Jacobi-weighted Besov and Sobolev spaces …”
Volltext

Direct and Inverse Theorems in the Theory of Approximation by the Ritz Method von Horbachuk, M. L., Hrushka, Ya. I., Torba, S. M.

Volltext

L p Bernstein inequalities and inverse theorems for RBF approximation on R d von Ward, John Paul

Volltext

Direct and inverse theorems of approximation theory for a generalized modulus of smoothness von Potapov, M. K., Berisha, F. M., Потапов, М. К., Берища, Ф. М.

“… direct and inverse theorems of approximation theory for it.В данной работе вводится несимметричный оператор обобшенного свига, с его помошью определяется обобшенный …”
Volltext

Lp Bernstein inequalities and inverse theorems for RBF approximation on Rd von Ward, John Paul

“… Bernstein inequalities and inverse theorems are a recent development in the theory of radial basis function (RBF) approximation …”
Volltext

Inverse Theorem on Row Sequences of Linear Padé-orthogonal Approximation von Bosuwan, N., López Lagomasino, G.

“… Thereby, we obtain an analog of Gonchar’s theorem on row sequences of Padé approximants …”
Volltext

Direct and inverse theorems of approximation theory for a generalised modulus of smoothness von Potapov, Mikhail K, Berisha, Faton M

“… direct and inverse theorems of approximation theory for it …”
Volltext

Direct and Inverse Theorems in the Theory of Approximation of Functions in the Space Sp von Stepanets, A. I., Serdyuk, A. S.

Volltext

Inequalities and Inverse Theorems in Restricted Rational Approximation Theory von Borwein, Peter

“… The following lemma, part a) due to S. N. Bernstein and part b) due to A. A. Markov, is fundamental to the proofs of many inverse theorems in polynomial approximation theory. LEMMA 1. [2, p. 62 and p. 67] Let …”
Volltext

On the Constants in Inverse Theorems for the First-Order Derivative von Vinogradov, O. L.

“… The known proofs of the inverse theorems in the theory of approximation by trigonometric polynomials and entire functions of exponential type are based on S.N …”
Volltext

Approximation by polynomials and rational functions in weighted rearrangement invariant spaces von Israfilov, Daniyal M., Akgün, Ramazan

“… Let Γ be a Dini-smooth curve in the complex plane, and let G : = Int Γ . We prove some direct and inverse theorems of approximation theory by algebraic …”
Volltext

Direct and inverse results in variable Hilbert scales von Mathé, Peter, Hofmann, Bernd

“… The authors review and establish direct theorems and also provide inverse theorems, as such are common in approximation theory …”
Volltext

Approximation by Entire Functions on a Countable Set of Continua. The Inverse Theorem von Silvanovich, O. V., Shirokov, N. A.

“… are called inverse approximation theorems. It is usually said that some class of generally smooth functions is constructively described in terms of the approximation by polynomials …”
Volltext

Geometric series of positive linear operators and the inverse Voronovskaya theorem on a compact interval von Abel, Ulrich, Ivan, Mircea, Păltănea, Radu

“… We obtain an inverse Voronovskaya theorem and we apply our results to the Bernstein operators and a class of Bernstein …”
Volltext

Direct and inverse theorems in the theory of approximation by the Ritz method von Torba, S M, Gorbachuk, M L, Grushka, Ya I

“… For an arbitrary self-adjoint operator \(B\) in a Hilbert space \(H\), we present direct and inverse theorems establishing the relationship between the degree of smoothness of a vector \(x \in H …”
Volltext