Abstract
In the present paper, we consider the construction of general sparse tensor product spaces in arbitrary space dimensions when the single subdomains are of different dimensionality and the associated ansatz spaces possess different approximation properties. Our theory extends the results from Griebel and Harbrecht (Math. Comput., 2013) for the construction of two-fold sparse tensor product space to arbitrary L-fold sparse tensor product spaces.
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Notes
Here and subsequently, the summation limits are in general no natural numbers and must of course be rounded properly. We leave this to the reader to avoid cumbersome floor/ceil-notations.
Otherwise, we apply the induction to an appropriate permutation of the spatial dimensions.
Otherwise, we apply the induction to an appropriate permutation of the spatial dimensions.
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Communicated by Wolfgang Dahmen.
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Griebel, M., Harbrecht, H. A Note on the Construction of L-Fold Sparse Tensor Product Spaces. Constr Approx 38, 235–251 (2013). https://doi.org/10.1007/s00365-012-9178-7
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DOI: https://doi.org/10.1007/s00365-012-9178-7
Keywords
- High-dimensional problems
- Sparse grids
- Sparse tensor product spaces
- Tensor product domains of different dimensions
- Sparse tensor product of ansatz spaces with different approximation power
- Optimal construction of sparse grids
- Rate of approximation