The moment problem associated with the Stieltjes-Wigert polynomials

被引:35
|
作者
Christiansen, JS [1 ]
机构
[1] Univ Copenhagen, Dept Math, DK-2100 Copenhagen 0, Denmark
关键词
indeterminate moment problems; Stieltjes-Wigert polynomials; Nevanlinna parametrization;
D O I
10.1016/S0022-247X(02)00534-6
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We consider the indeterminate Stieltjes moment problem associated with the Stieltjes-Wigert polynomials. After a presentation of the well-known solutions, we study a transformation T of the set of solutions. All the classical solutions turn out to be fixed under this transformation but this is not the case for the so-called canonical solutions. Based on generating functions for the Stieltjes-Wigert polynomials, expressions for the entire functions A, B, C, and D from the Nevanlinna parametrization are obtained. We describe T-(n) (mu) for n is an element of N when mu = mu(0) is a particular N-extremal solution and explain in detail what happens when n --> infinity. (C) 2002 Elsevier Science (USA). All rights reserved.
引用
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页码:218 / 245
页数:28
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