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  • integration  (1)
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    Electronic Resource
    Electronic Resource
    Springer
    Computing 43 (1989), S. 141-157 
    ISSN: 1436-5057
    Keywords: 65D32 ; 41A55 ; cubature formula ; ideal theory ; integration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Es sind nur wenige Kubaturformeln bekannt, deren Knotenzahl Möllers unterer Schranke entspricht. In dieser Arbeit werden die Beziehungen zwischen reelen Idealen und Kubaturformeln ausgenutzt, um solche minimale Formeln mit beliebigem ungeraden Grad für zwei klassische Integrale zu bestimmen. Eine Basis der Ideale kann explizit angegeben werden, weiter können fast alle Knoten in geschlossener Form bestimmt werden. Es wird gezeigt, daß alle Knoten im Integrationsbereicht liegen.
    Notes: Abstract Cubature formulae with the number of nodes equal to Möller's lower bound are rare. In this paper, the relation between real polynomial ideals and cubature formulae is used to construct such minimal formulae of arbitrary odd degree for two classical integrals. We found general expressions for bases of these ideals and closed formulae for almost all nodes. We proved that all nodes are inside the domain of integration.
    Type of Medium: Electronic Resource
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