Keywords: 41A17; 41A35; 41A36; 41A46; Hausdorff distance; Jackson type error estimate; Quasi-interpolation operator; Quasi-uniformity; Rational formations; Well-separateness;
مقالات ISI (ترجمه نشده)
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Keywords: 26A16; 41A10; 41A17; 33C47; 40G05; Measure of smoothness; Direct and weak converse inequalities; Cesà ro summability;
Keywords: 41A17; 68T05; 62J02; Coefficient-based regularized regression; Indefinite kernel; Moment hypothesis; Stepping stone function; Learning rate;
Keywords: 41A17; 30C10; Trigonometric polynomials; Algebraic polynomials; Bernstein- and Markov-type inequalities; Equilibrium measure; Green's function; Fast decreasing polynomials;
Keywords: 30C10; 30E10; 41A17; 41A50; 30C85; Bernstein-Walsh inequality; Green function; Logarithmic capacity; Inverse polynomial image;
Keywords: 41A17; 41A63; 42B30; K-functional; Hp space; Multivariate average; Hp Multiplier; Wave operator;
Keywords: 41A17; 41A80; 42A38; 46E15; 94A20; 26A16; 46E35; 26A33Non-bandlimited functions; Sobolev spaces of fractional order; Modulation spaces; Lipschitz spaces; Riesz derivatives of fractional order; Formulae with remainders; Derivative-free error estimates; Sam
Keywords: 41A17; 41A25; 42C10Spherical harmonic polynomials; Jacobi weights; Hausdorff–Young and Hardy–Littlewood inequalities
Keywords: 41A05; 41A17; 42B35; 42C15; 42C40Approximation spaces; Democracy; Frames; Parabolic molecules; Shearlets; Smoothness spaces
Keywords: modulus of continuity; K-functional; Jackson's theorem42A10; 41A17; 41A50
Quadrature formulas with variable nodes and Jackson-Nikolskii inequalities for rational functions
Keywords: 41A17; 41A44; 30E20; Rational functions; Jackson-Nikolskii inequalities; Quadrature formulas;
Best approximations and moduli of smoothness of functions and their derivatives in Lp, 0<p<1
Keywords: 41A10; 41A15; 41A17; 41A25; 41A28; Spaces Lp; 0<p<1; Moduli of smoothness; Best approximation; Simultaneous approximation; Trigonometric and algebraic polynomials; Splines;
Sharp constants in V. A. Markov-Bernstein type inequalities of different metrics
Keywords: 41A17; 41A10; V. A. Markov-Bernstein inequality of different metrics; Algebraic polynomials; Trigonometric polynomials; Entire functions of exponential type; Entire functions of exponential semitype;
Turán type converse Markov inequalities in Lq on a generalized ErÅd class of convex domains
Keywords: primary; 41A17; secondary; 30E10; 52A10; Bernstein-Markov inequalities; Turán's lower estimate of derivative norm; logarithmic derivative; Chebyshev constant; transfinite diameter; capacity; outer angle; convex domains; Blaschke Rolling Ball Theorems
Proof of a conjecture of Granath on optimal bounds of the Landau constants
Keywords: 39A60; 41A60; 41A17; 33C05Landau constants; Second-order linear difference equation; Sharper bound; Asymptotic expansion; Hypergeometric function
The Bernstein Voronovskaja-type theorem for positive linear approximation operators
Keywords: 41A10; 41A25; 41A36; 41A17; 41A80Bernstein–Voronovskaja theorem; Positive linear operators; Central moments; Rate of convergence
Kolmogorov's problem on the class of multiply monotone functions
Keywords: 26D10; 41A17; 47A30; 41A44; Multiply monotone; Sharp inequalities; Derivatives; Kolmogorov's problem; Moment problem; Hermite-Birkhoff interpolation; Extremal problems;
Estimates for the asymptotic convergence factor of two intervals
Keywords: 41A17; 33E05; 41A29; 65F10Estimated asymptotic convergence factor; Inequality; Jacobian elliptic functions; Jacobian theta functions; Two intervals
Best coapproximation in quotient spaces
Keywords: 41A50; 41A52; 41A17; 54B15; 35E10Upper semi-continuous; Boundedly compact set; Coproximinal subspaces; Co-Chebyshev subspace
Ul’yanov-type inequality for bounded convex sets in RdRd
Keywords: 41A17; 41A63; 41A25Moduli of smoothness; Ul’yanov-type inequality; Realization results; Whitney-type inequality
Maximal convergence theorems for functions of squared modulus holomorphic type in R2R2 and some applications
Keywords: 41A17; 41A10; 41A60; 41A63; 41A25; 30E10; 30C35Polynomial approximation in 2-space; Maximal convergence; Bernstein–Walsh's type theorems; Real-analytic functions
Exact Markov inequalities for the Hermite and Laguerre weights
Keywords: 41A17; 26D10Weighted polynomials; Markov inequality
Some results concerning proximinality and co-proximinality
Keywords: 41A17; 41A50; 41A52; 46B25; Best approximation; Best co-approximation; Chebychev subspace; Proximinal subspace; Co-proximinal subspace; Co-Chebychev subspace;
On equivalence of moduli of smoothness of polynomials in Lp, 0<p⩽â
Keywords: 41A10; 42A10; 41A17; Equivalence; Moduli of smoothness; Weighted moduli of smoothness; Polynomials;
Kernels and best approximations related to the system of ultraspherical polynomials
Keywords: 41A10; 41A17; 41A25; 42C10; 33C45; Orthogonal polynomials; Best approximations; Nikol'skiÄ±Ë inequalities;
Approximation of smooth functions on compact two-point homogeneous spaces
Keywords: primary 41A46; 41A17; Compact two-point homogeneous spaces; n-widths; Marcinkiewicz-Zygmund inequalities; Positive cubature formulas;
Higher order optimal approximation of Csiszar's f-divergence
Keywords: 26B40; 26D15; 28A25; 41A17; 41A25; 60B10; 60E15; Csiszar's discrimination; Csiszar's distance; Representation; Rate of approximation; Probabilistic inequality;