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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Zeitschrift 138 (1974), S. 213-218 
    ISSN: 1432-1823
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Zeitschrift 170 (1980), S. 267-282 
    ISSN: 1432-1823
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Numerische Mathematik 31 (1978), S. 281-297 
    ISSN: 0945-3245
    Keywords: AMS(MOS): 65D30 ; CR: 5.15
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary In this paper an approach is outlined to the two-dimensional analogon of the Gaussian quadrature problem. The main results are necessary and sufficient conditions for the existence of cubature formulae which are exact for all polynomials of degree ≦m and which have a minimal number of 1/2k(k+1) knots,k=[m/2]+1. Ifm is odd, similar results are due to I.P. Mysovskikh ([5, 6]) which will be derived in a new way as a special case of the general characterization given here. Furthermore, it will be shown how this characterization can be used to construct minimal formulae of even degree.
    Type of Medium: Electronic Resource
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  • 4
    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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