The Tanh Rule for Numerical Integration
The Tanh Rule for Numerical Integration
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数值积分的 Tanh 规则
DOI:
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发表时间:
1977
期刊:
影响因子:
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通讯作者:
S. Haber
中科院分区:
文献类型:
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作者:
S. Haber
The tanh rule for numerical integration is analyzed in the context of the Hardy space $H^2 $. The optimal parameter choice is determined, and it is shown that the norm of the error functional is asymptotic to $Cexp ( - ({pi / 2})sqrt M )$, where M is the number of points used and C is a certain constant. The result is related to recent theorems on approximation of piecewise analytic functions by rational functions.