Title
Stieltjes polynomials and Lagrange interpolation
Abstract
Bounds are proved for the Stieltjes polynomial En+1 ,a nd lower bounds are proved for the distances of consecutive zeros of the Stieltjes poly- nomials and the Legendre polynomials Pn. This sharpens a known interlacing result of Szego. As a byproduct, bounds are obtained for the Geronimus poly- nomials Gn. Applying these results, convergence theorems are proved for the Lagrange interpolation process with respect to the zeros of En+1, and for the extended Lagrange interpolation process with respect to the zeros of PnEn+1 in the uniform and weighted Lp norms. The corresponding Lebesgue constants are of optimal order.
Year
DOI
Venue
1997
10.1090/S0025-5718-97-00808-9
Math. Comput.
Keywords
Field
DocType
lagrange interpolation,. stieltjes polynomials,stieltjes polynomial,extended lagrange in- terpolation,convergence.,lower bound,convergence,n 1,lp norm,legendre polynomial,n
Lagrange polynomial,Mathematical optimization,Classical orthogonal polynomials,Polynomial,Orthogonal polynomials,Mathematical analysis,Legendre polynomials,Fourier transform,Mathematics,Lebesgue integration,Riemann–Stieltjes integral
Journal
Volume
Issue
ISSN
66
217
0025-5718
Citations 
PageRank 
References 
7
1.63
0
Authors
2
Name
Order
Citations
PageRank
Sven Ehrich1125.39
Giuseppe Mastroianni23510.38