Optimized general sparse grid approximation spaces for operator equations
Optimized general sparse grid approximation spaces for operator equations
复制标题
算子方程的优化一般稀疏网格近似空间
DOI:
10.1090/s0025-5718-09-02248-0
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
S. Knapek
中科院分区:
文献类型:
--
作者:
M. Griebel;S. Knapek
This paper is concerned with the construction of optimized sparse grid approximation spaces for elliptic pseudodifferential operators of arbitrary order. Based on the framework of tensor-product biorthogonal wavelet bases and stable subspace splittings, we construct operator-adapted subspaces with a dimension smaller than that of the standard full grid spaces but which have the same approximation order as the standard full grid spaces, provided that certain additional regularity assumptions on the solution are fulfilled. Specifically for operators of positive order, their dimension isindependent of the dimensionof the problem, compared tofor the full grid space. Also, for operators of negative order the overall cost is significantly in favor of the new approximation spaces. We give cost estimates for the case of continuous linear information. We show these results in a constructive manner by proposing a Galerkin method together with optimal preconditioning. The theory covers elliptic boundary value problems as well as boundary integral equations. References
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DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
M. Griebel
通讯作者:
M. Griebel
影响因子:
2.7
作者:
Pál
通讯作者:
Pál
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
A. Hochmuth;Stephan KNAPEKx;Gerhard ZUMBUSCHxAbstract
通讯作者:
Gerhard ZUMBUSCHxAbstract
影响因子:
2.9
作者:
S. Knapek;F. Koster
通讯作者:
F. Koster
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
S. Pereverzev
通讯作者:
S. Pereverzev