Geronimus transformations of bivariate linear functionals

被引:0
|
作者
Marcellan, Francisco [1 ]
Marriaga, Misael E. [2 ]
Perez, Teresa E. [3 ,4 ]
Pinar, Miguel A. [3 ,4 ]
机构
[1] Univ Carlos III Madrid, Dept Matemat, Getafe, Spain
[2] Univ Rey Juan Carlos, Dept Matemat Aplicada Ciencia & Ingn Mat & Tecnol, Mostoles, Spain
[3] Univ Granada, Fac Ciencias, Inst Matemat IEMath GR, Granada, Spain
[4] Univ Granada, Fac Ciencias, Dept Matemat Aplicada, Granada, Spain
关键词
Bivariate orthogonal polynomials; Classical and semiclassical orthogonal polynomials; ORTHOGONAL POLYNOMIALS; INVERSE PROBLEM; PRODUCT; FORM;
D O I
10.1016/j.jmaa.2019.123736
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Given a linear functional u in the linear space of polynomials in two variables with real coefficients and a polynomial lambda(x, y), in this contribution we deal with Geronimus transformations of u, i.e., those linear functionals v such that u = lambda(x, y)v. The connection formulas between the sequences of bivariate orthogonal polynomials with respect to u and v are given. A matrix interpretation of such transformations by using LU and UL factorizations of the block Jacobi matrices associated with such polynomials is given. Finally, some illustrative examples of Geronimus transformations of weight function supported in domains of R-2 are discussed. (C) 2019 Elsevier Inc. All rights reserved.
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页数:30
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