Gauss%E2%80%93Christoffel%20quadrature
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1: 3.5 Quadrature
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§3.5(v) Gauss Quadrature
… ►The remainder is given by … ►Gauss–Legendre Formula
… ►Gauss–Chebyshev Formula
… ►Gauss–Laguerre Formula
…2: 35.10 Methods of Computation
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►Other methods include numerical quadrature applied to double and multiple integral representations.
See Yan (1992) for the and functions of matrix argument in the case , and Bingham et al. (1992) for Monte Carlo simulation on applied to a generalization of the integral (35.5.8).
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3: 15.5 Derivatives and Contiguous Functions
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►The six functions , , are said to be contiguous to .
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15.5.11
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15.5.12
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►By repeated applications of (15.5.11)–(15.5.18) any function , in which are integers, can be expressed as a linear combination of and any one of its contiguous functions, with coefficients that are rational functions of , and .
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15.5.20
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4: 20.11 Generalizations and Analogs
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§20.11(i) Gauss Sum
►For relatively prime integers with and even, the Gauss sum is defined by … … ►
20.11.5
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►Similar identities can be constructed for , , and .
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5: 15.19 Methods of Computation
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►The Gauss series (15.2.1) converges for .
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►Large values of or , for example, delay convergence of the Gauss series, and may also lead to severe cancellation.
►For fast computation of with and complex, and with application to Pöschl–Teller–Ginocchio potential wave functions, see Michel and Stoitsov (2008).
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►Gauss quadrature approximations are discussed in Gautschi (2002b).
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►For example, in the half-plane we can use (15.12.2) or (15.12.3) to compute and , where is a large positive integer, and then apply (15.5.18) in the backward direction.
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6: 18.5 Explicit Representations
7: 27.2 Functions
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►Euclid’s Elements (Euclid (1908, Book IX, Proposition 20)) gives an elegant proof that there are infinitely many primes.
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►Gauss and Legendre conjectured that is asymptotic to as :
…(See Gauss (1863, Band II, pp. 437–477) and Legendre (1808, p. 394).)
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8: 15.10 Hypergeometric Differential Equation
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►(b) If equals , and , then fundamental solutions in the neighborhood of are given by and
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15.10.11
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►The connection formulas for the principal branches of Kummer’s solutions are:
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