Markoff Type Inequalities for Curved Majorants

Markoff Type Inequalities for Curved Majorants
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曲线Majorants 的马尔可夫型不等式

DOI:
10.1007/978-3-0348-6656-9_15
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发表时间:
1987
期刊:
--
影响因子:
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通讯作者:
G. Schmeisser
G. Schmeisser
中科院分区:
--
文献类型:
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作者:
Q. I. Rahman;G. Schmeisser

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设Лnbe为最大数为n的复数系数多项式的集合。通常用和U表示m (x) = (1= x2) - 1/ 2sin ((m+1) arccos x)分别表示第一类和第二类m次的切比舍夫多项式。进一步,我们将单位区间上的最大范数写成∥·∥,即$$\left\| P \right\|: = \begin{array}{*{20}c} {\max } \\ { - 1 \leqq x \leqq 1} \\ \end{array} |p(x)|$$。
Let Лnbe the set of all polynomials of degree at most n with complex coefficients. As usual denote byand U m (x) : =  (1= x 2 ) −1/2 sin((m+1)arc cos x) the Tschebyscheff polynomials of degree m of the first and second kind, respectively. Furthermore, let us write ∥·∥ for the maximum norm on the unit interval, i. e. $$\left\| P \right\|: = \begin{array}{*{20}c} {\max } \\ { - 1 \leqq x \leqq 1} \\ \end{array} |p(x)|$$.