Title
Jacobi matrices for measures modified by a rational factor
Abstract
This paper describes how, given the Jacobi matrixJ for the measure dσ(t), it is possible to produce the Jacobi matrix Ĵ for the measurer(t)dσ(t) wherer(t) is a quotient of polynomials. The method uses a new factoring algorithm to generate the Jacobi matrices associated with the partial fraction decomposition ofr(t) and then applies a previously developed summing technique to merge these Jacobi matrices. The factoring method performs best just where Gautschi's minimal solution method for this problem is weakest and vice versa. This suggests a hybrid strategy which is believed to be the most powerful yet for solving this problem. The method is demonstrated on a simple example and some numerical tests illustrate its performance characteristics.
Year
DOI
Venue
1994
10.1007/BF02142672
Numerical Algorithms
Keywords
Field
DocType
Orthogonal polynomials,Jacobi matrices,rational factors modifying measures,Gauss quadratures
Mathematical optimization,Jacobi rotation,Jacobi method,Orthogonal polynomials,Mathematical analysis,Jacobi operator,Matrix (mathematics),Jacobi eigenvalue algorithm,Jacobi polynomials,Partial fraction decomposition,Mathematics
Journal
Volume
Issue
Citations 
6
2
5
PageRank 
References 
Authors
1.41
0
2
Name
Order
Citations
PageRank
S. Elhay12818.57
Jaroslav Kautsky210820.75