On generalized averaged Gaussian formulas
On generalized averaged Gaussian formulas
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关于广义平均高斯公式
DOI:
10.1090/s0025-5718-07-01975-8
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发表时间:
2007
期刊:
影响因子:
--
通讯作者:
M. Spalević
中科院分区:
文献类型:
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作者:
M. Spalević
We present a simple numerical method for constructing the optimal (generalized) averaged Gaussian quadrature formulas which are the optimal stratified extensions of Gauss quadrature formulas. These extensions exist in many cases in which real positive Kronrod formulas do not exist. For the Jacobi weight functions w(x)= w (α,β) (x) =(1- x)α(1 + x) β (α,β > -1) we give a necessary and sufficient condition on the parameters a and β such that the optimal averaged Gaussian quadrature formulas are internal.