Zero asymptotics of Laurent orthogonal polynomials

被引:2
|
作者
Hernandez, MB
Finkelshtein, AM
机构
[1] UNIV AUTONOMA MADRID, FAC CIENCIAS, E-28049 MADRID, SPAIN
[2] UNIV CARLOS III, DEPT INGN, MADRID, SPAIN
关键词
D O I
10.1006/jath.1996.0046
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let {h(kappa)(z)} be the sequence of polynomials satisfying integral(0)(+x) h(m)(x) h(n)(x) N(-lambda n)rho(x) = delta(mm), 0 less than or equal to m less than or equal to n, where lambda(n) is an element of [0, 2n], n is an element of N. For a wide class of weights d rho(x) and under the assumption lim(n-->alpha) lambda(n)/(2n) = 0 is an element of [0, 1], two descriptions of the zero asymptotics of {h(n)(z)} are obtained. Furthermore, their analogues for polynomials orthogonal on [-1, 1] with respect to varying weights are considered. These results continue the study begun in [3]. (C) 1996 Academic Press, Inc.
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页码:324 / 342
页数:19
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