Journal
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS
Volume 236, Issue 16, Pages 4105-4118Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cam.2012.03.015
Keywords
Quadrature; Quasi-interpolation; BS methods; Splines
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Two new classes of quadrature formulas associated to the BS Boundary Value Methods are discussed. The first is of Lagrange type and is obtained by directly applying the BS methods to the integration problem formulated as a (special) Cauchy problem. The second descends from the related BS Hermite quasi-interpolation approach which produces a spline approximant from Hermite data assigned on meshes with general distributions. The second class formulas is also combined with suitable finite difference approximations of the necessary derivative values in order to define corresponding Lagrange type formulas with the same accuracy. (C) 2012 Elsevier B.V. All rights reserved.
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