Approximation of functions on the sphere on a Sobolev space with a Gaussian measure in the probabilistic case setting
Approximation of functions on the sphere on a Sobolev space with a Gaussian measure in the probabilistic case setting
复制标题
在概率案例设置中用高斯测度逼近 Sobolev 空间上的球体函数
DOI:
10.1142/s0219691314610128
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发表时间:
2014-09
期刊:
影响因子:
--
通讯作者:
Zhai, Xuebo
中科院分区:
文献类型:
--
作者:
Wang, Heping;Zhai, Xuebo
In this paper, we discuss the best approximation of functions on the sphere by spherical polynomials and the approximation by the Fourier partial summation operators and the Vallee-Poussin operators, on a Sobolev space with a Gaussian measure in the probabilistic case setting, and get the probabilistic error estimation. We show that in the probabilistic case setting, the Fourier partial summation operators and the Vallee-Poussin operators are the order optimal linear operators in the Lq space for 1 ≤ q ≤ ∞, but the spherical polynomial spaces are not order optimal in the Lq space for 2 < q ≤ ∞. This is completely different from the situation in the average case setting, which the spherical polynomial spaces are order optimal in the Lq space for 1 ≤ q < ∞. Also, in the Lq space for 1 ≤ q ≤ ∞, worst-case order optimal subspaces are also order optimal in the probabilistic case setting.
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影响因子:
1.7
作者:
Zhang, Yanwei;Wang, Heping;Zhai, Xuebo
通讯作者:
Zhai, Xuebo
DOI:
10.1006/jcom.1994.1022
发表时间:
1994-12
期刊:
J. Complex.
影响因子:
--
作者:
Yongsheng Sun;C. Wang
通讯作者:
Yongsheng Sun;C. Wang
影响因子:
1.7
作者:
G. Brown;F. Dai
通讯作者:
G. Brown;F. Dai
影响因子:
1.3
作者:
Heping Wang;Wei-Sun Jiang;Xuebo Zhai
通讯作者:
Heping Wang;Wei-Sun Jiang;Xuebo Zhai
影响因子:
1.7
作者:
F. Dai;Heping Wang
通讯作者:
F. Dai;Heping Wang