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Rational Gauss-Chebyshev quadrature formulas for complex poles outside
Author(s):
Karl
Deckers;
Joris
Van Deun;
Adhemar
Bultheel.
Journal:
Math. Comp.
77
(2008),
967-983.
MSC (2000):
Primary 42C05, 65D32
Posted:
September 28, 2007
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Abstract:
In this paper we provide an extension of the Chebyshev orthogonal rational functions with arbitrary real poles outside to arbitrary complex poles outside . The zeros of these orthogonal rational functions are not necessarily real anymore. By using the related para-orthogonal functions, however, we obtain an expression for the nodes and weights for rational Gauss-Chebyshev quadrature formulas integrating exactly in spaces of rational functions with arbitrary complex poles outside .
References:
-
- 1.
- A. Bultheel, P. González-Vera, E. Hendriksen, and O. Njåstad.
Orthogonal Rational Functions, volume 5 of Cambridge Monographs on Applied and Computational Mathematics. Cambridge University Press, 1999. MR 1676258 (2000c:33001) - 2.
- L. Daruis, P. González-Vera, and O. Njåstad.
Szego quadrature formulas for certain Jacobi-type weight functions. Math. Comp., 71:683-701, 2001. MR 1885621 (2002k:41043) - 3.
- A. A. Gonchar and E. A. Rakhmanov.
Equilibrium measure and the distribution of zeros of extremal polynomials. Math. USSR Sbornik, 53:119-130, 1986. - 4.
- E. B. Saff and V. Totik.
Logarithmic potentials with external fields, volume 316 of Grundlehren der mathematischen Wissenschaften. Springer, Berlin Heidelberg, 1997. MR 1485778 (99h:31001) - 5.
- W. Van Assche and I. Vanherwegen.
Quadrature formulas based on rational interpolation. Math. Comp., 61(204):765-783, 1993. MR 1195424 (94a:65014) - 6.
- J. Van Deun and A. Bultheel.
Orthogonal rational functions and quadrature on an interval. J. Comput. Appl. Math., 153(1-2):487-495, 2003. MR 1985717 (2004e:42043) - 7.
- J. Van Deun, A. Bultheel, and P. González Vera.
On computing rational Gauss-Chebyshev quadrature formulas. Math. Comp., 75:307-326, 2006. MR 2176401 (2006e:41060) - 8.
- P. Van gucht and A. Bultheel.
A relation between orthogonal rational functions on the unit circle and the interval . Comm. Anal. Th. Continued Fractions, 8:170-182, 2000. MR 1789681 (2001h:42037) - 9.
- J.A.C. Weideman and D.P. Laurie.
Quadrature rules based on partial fraction expansions. Numerical Algorithms, 24:159-178, 2000. MR 1784997 (2001f:65032)
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Additional Information:
Karl
Deckers
Affiliation:
Department of Computer Science, K. U. Leuven, B-3001 Heverlee, Belgium
Email:
karl.deckers@cs.kuleuven.be
Joris
Van Deun
Affiliation:
Department of Computer Science, K. U. Leuven, B-3001 Heverlee, Belgium
Address at time of publication:
Department of Mathematics and Computer Science, Universiteit Antwerpen, B-2020 Antwerpen, Belgium
Email:
joris.vandeun@ua.ac.be
Adhemar
Bultheel
Affiliation:
Department of Computer Science, K. U. Leuven, B-3001 Heverlee, Belgium
Email:
adhemar.bultheel@cs.kuleuven.be
DOI:
10.1090/S0025-5718-07-01982-5
PII:
S 0025-5718(07)01982-5
Keywords:
Quadrature formulas,
orthogonal rational functions
Received by editor(s):
February 9, 2006
Posted:
September 28, 2007
Additional Notes:
The work of the first two authors was partially
supported by the Fund for Scientific Research
(FWO), projects `CORFU: Constructive study of
orthogonal functions', grant #G.0184.02 and,
`RAM: Rational modelling: optimal conditioning
and stable algorithms', grant #G.0423.05, and
by the Belgian Programme on Interuniversity Attraction
Poles, initiated by the Belgian Federal Science
Policy Office. The scientific responsibility rests
with the authors.
Copyright of article:
Copyright
2007,
American Mathematical Society
The copyright for this article reverts to public domain after 28 years from publication.
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