Construction of Gauss-Christoffel quadrature formulas

Construction of Gauss-Christoffel quadrature formulas
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高斯-克里斯托菲尔求积公式的构造

DOI:
10.1090/s0025-5718-1968-0228171-0
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发表时间:
1968
影响因子:
2
通讯作者:
W. Gautschi
W. Gautschi
中科院分区:
数学2区
文献类型:
--
作者:
W. Gautschi

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这些规则中的每一个都被称为高斯-克里斯托费尔正交公式,如果它具有最大的精确度,即如果(1.1)是一个精确等式,当f是2n1次多项式时。这是一个众所周知的事实,根据Christoffel[3],这样的正交公式是唯一存在的,只要权函数w(x)是非负的,与Jb w(x)dx[3]可积,并且它的所有矩
Each of these rules will be called a Gauss-Christoffel quadrature formula if it has maximum degree of exactness, i.e. if (1.1) is an exact equality whenever f is a polynomial of degree 2n 1. It is a well-known fact, due to Christoffel [3], that such quadrature formulas exist uniquely, provided the weight function w(x) is nonnegative, integrable with Jb w(x)dx > 0, and such that all its moments