Results 101 to 110 of about 1,751 (140)
Some of the next articles are maybe not open access.
Ukrainian Mathematical Journal, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +1 more source
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +1 more source
Strengthening of Kolmogorov Type Inequalities for Derivatives and Differences
Journal of Mathematical Sciences, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +2 more sources
On Kolmogorov-type inequalities for functions defined on a semiaxis
Ukrainian Mathematical Journal, 2007Summary: We established necessary and sufficient conditions for the existence of a function from the class \(S^-\) with given integral norms of three successive derivatives (generally speaking, of fractional order).
Babenko, V. F., Skorokhodov, D. S.
openaire +1 more source
Multivariate Inequalities of Kolmogorov Type and Their Applications
1997Connections of inequalities of Kolmogorov type given in the form of inequalities for support functions of convex sets with some problems of analysis will be investigated. Our results will be oriented to applications in multivariate approximation. Exact inequalities which estimate L2-norms of derivatives of a multivariate periodic function with the help
V. F. Babenko +2 more
openaire +1 more source
Discrete and shift Kolmogorov type inequalities
Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 1983SynopsisThe operators Δhf ≡ f(x) on function spaces and Δxn ≡ xn+1–xn on sequence spaces replace derivatives to yield analogues of the Kolmogorov inequality. Estimates for best constants are given for many spaces and for a few the best constants are actually given.
openaire +1 more source
Multivariate Landau–Kolmogorov-type inequality
Mathematical Proceedings of the Cambridge Philosophical Society, 1989AbstractAssuming that the nth iterate of the Laplacian Δnf belongs to L∞(ℝ), we show for 0 < k < 2n thatwhere ∂/∂ξi is the derivative in the ei direction. The result is also extended to other Banach spaces of functions on ℝd.
openaire +1 more source
Kolmogorov-type inequalities and the best formulas for numerical differentiation
Mathematical Notes of the Academy of Sciences of the USSR, 1968For a certain class of complex-valued functionsf(x), −∞
openaire +1 more source
Kolmogorov-Type Inequalities for Fractional Derivatives on the Half Line
Ukrainian Mathematical Journal, 2014zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +2 more sources
On an inequality of the Kolmogorov type for a second-order differential expression
Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences, 1993Abstract In this paper we discuss an integro-differential inequality formed from the square of a second-order differential expression. A connection between the existence of the inequality and the Titchmarsh–Weyl m-function is established and it is shown that the best constant in the inequality is determined by the behaviour of the m ...
Beynon, M. J. +2 more
openaire +1 more source
Ukrainian Mathematical Journal, 1999
Summary: Nonperiodic analogs are obtained of the known inequalities which estimate \(L_{p}\)-norms of intermediate derivatives of a periodic function in terms of \(L_{\infty}\)-norms and the higher derivative of the considered function.
Babenko, V. F., Selivanova, S. A.
openaire +1 more source
Summary: Nonperiodic analogs are obtained of the known inequalities which estimate \(L_{p}\)-norms of intermediate derivatives of a periodic function in terms of \(L_{\infty}\)-norms and the higher derivative of the considered function.
Babenko, V. F., Selivanova, S. A.
openaire +1 more source