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  • Articles  (4)
  • integration  (4)
  • 2020-2024
  • 1965-1969  (4)
  • Mathematics  (4)
  • Political Science
  • Energy, Environment Protection, Nuclear Power Engineering
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  • Articles  (4)
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  • Mathematics  (4)
  • Political Science
  • Energy, Environment Protection, Nuclear Power Engineering
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    BIT 6 (1966), S. 339-346 
    ISSN: 1572-9125
    Keywords: Monte Carlo ; integration ; random ; approximation ; quadrature
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract After a short discussion of Monte Carlo integration the crude Monte Carlo method is tested by estimating the integrals $$\int\limits_0^1 {\left( {\frac{1}{x}} \right)^{1/v} } dxas\bar f_n = \frac{1}{n}\sum\limits_{i = 1}^n {\left( {\frac{1}{{\xi _i }}} \right)^{1/v} ,} $$ where ξ i are independent uniformly distributed random numbers in [0, 1] andν ∈ [1, 2], in which interval $$\sigma (\bar f_n )$$ is infinite. By the aid of the Central Limit Theorem an approximation for the distributions of the sums $$\bar f_n $$ is obtained. The results of the Monte Carlo computations are then compared with the results obtained from the distributions of $$\bar f_n $$ .
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    BIT 9 (1969), S. 18-29 
    ISSN: 1572-9125
    Keywords: Numerical ; integration ; extrapolation ; error term
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract It is proved that the error terms for both the ordinary and the modified Romberg algorithms may be expressed in terms of Bernoulli polynomials and their related periodic functions. The properties of the error terms may thus be described using the known properties of the Bernoulli polynomials and functions.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    BIT 9 (1969), S. 338-350 
    ISSN: 1572-9125
    Keywords: Chebyshev ; approximation ; numerical ; integration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper we discuss a modification of the Clenshaw-Curtis quadrature formula. It is shown that for integrals, where the integrand may be expanded in a sufficiently rapid convergent Chebyshev series, we may split the sequence of calculated approximations into two sequences, one which approximates the integral from above and one which approximates it from below. Thus, at any step during the calculation we obtain both upper and lower bounds for the true value of the integral.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    BIT 7 (1967), S. 103-113 
    ISSN: 1572-9125
    Keywords: Numerical ; integration ; extrapolation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Experience gained in the use of the modified Romberg algorithm is reported. An alternative form of the algorithm based on a cosine transformation of Euler-MacLaurin's and Euler's second formula is discussed. Some examples where the error estimate incorporated in the algorithm partly fails are given. Finally an ALGOL procedure combining the algorithm discussed in a previous paper of the author [1] and the modification discussed in this paper is described.
    Type of Medium: Electronic Resource
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