Supported by National Natural Science Foundation of China(Grant No.10471010)
For the weighted approximation in Lp-norm, we determine the asymptotic order for the p- average errors of Lagrange interpolation sequence based on the Chebyshev nodes on the Wiener space. We also determine its value i...
supported by National Natural Science Foundation of China (Grant No.10471010)
For 1≤ p < ∞, firstly we prove that for an arbitrary set of distinct nodes in [-1, 1], it is impossible that the errors of the Hermite-Fejr interpolation approximation in L p -norm are weakly equivalent to the co...
support by National Natural Science Foundation of China(10471010);Education Science Foundation of Tianjin Normal University(52LJ80)
We consider the rate of mean convergence of derivatives by Lagrange interpolation operators L_n(f,x) based on the zeros of Chebyshev polynomials of the first kind.A sharp estimate of the derivative of L_n(f,x)—f(x) i...
Supported by the Foundation of Education Department of Yunnan Province (07Z10533);Supported partly by the National Natural Science Foundation of China (10471010);partly by the project "Representation Theory and Related Topics" of the "985 program" of Beijing Normal University;Supported by the Science Foundation of Yunnan University (2008YB027)
The article concerns the average onesided widths of the Sobolev and Besov classes and the classes of functions with bounded moduli of smoothness. The weak asymptotic results are obtained for the corresponding quantities.
Foundation item: Supported bv the National Natural Science Foundation of China(10471010)
We obtain an upper bound for the average error of the quasi-Griinwald interpolation based on the zeros of Chebyshev polynomial of the second kind in the Wiener space.