The Role of Frolov's Cubature Formula for Functions with Bounded Mixed Derivative
The Role of Frolov's Cubature Formula for Functions with Bounded Mixed Derivative
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有界混合导数函数的 Frolov 体积公式的作用
DOI:
10.1137/15m1014814
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
T. Ullrich
中科院分区:
文献类型:
--
作者:
M. Ullrich;T. Ullrich
We prove upper bounds on the order of convergence of Frolov's cubature formula for numerical integration in function spaces of dominating mixed smoothness on the unit cube with homogeneous boundary condition. More precisely, we study worst-case integration errors for Besovand Triebel--Lizorkin spacesand our results treat the whole range of admissible parameters. In particular, we obtain upper bounds for the difficult the case of small smoothness which is given for Triebel--Lizorkin spacesin casewith. The presented upper bounds on the worst-case error show a completely different behavior compared to “large” smoothness. In the latter case the presented upper bounds are optimal, i.e., they cannot be improved by any other cubature formula. The optimality for “small” smoothness is open.
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