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.
机构:
Univ Basel, Fac Business & Econ, Quantitat Methods Unit, CH-4002 Basel, SwitzerlandUniv Basel, Fac Business & Econ, Quantitat Methods Unit, CH-4002 Basel, Switzerland