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Mathematics of Computation
Mathematics of Computation
ISSN 1088-6842(online) ISSN 0025-5718(print)


On Chebyshev-type quadratures

Authors: Walter Gautschi and Hiroki Yanagiwara
Journal: Math. Comp. 28 (1974), 125-134
MSC: Primary 65D30
MathSciNet review: 0331731
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Abstract: According to a result of S. N. Bernstein, n-point Chebyshev quadrature formulas, with all nodes real, do not exist when $ n = 8$ or $ n \geqq 10$. Modifications of such quadrature formulas have recently been suggested by R. E. Barnhill, J. E. Dennis, Jr. and G. M. Nielson, and by D. Kahaner. We establish here certain empirical observations made by these authors, notably the presence of multiple nodes. We also show how some of the quadrature rules proposed can be constructed by solving single algebraic equations, and we compute the respective nodes to 25 decimal digits. The same formulas also arise in recent work of P. Rabinowitz and N. Richter as limiting cases of optimal Chebyshev-type quadrature rules in a Hilbert space setting.

References [Enhancements On Off] (What's this?)

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Additional Information

PII: S 0025-5718(1974)0331731-2
Keywords: Optimal quadrature formulas of Chebyshev type
Article copyright: © Copyright 1974 American Mathematical Society