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31: 3.9 Acceleration of Convergence
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►A transformation of a convergent sequence with limit into a sequence is called limit-preserving if converges to the same limit .
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►This transformation is accelerating if is a linearly convergent
sequence, i.
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►Then the transformation of the sequence into a sequence is given by
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►Then .
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►We give a special form of Levin’s transformation in which the sequence of partial sums is transformed into:
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32: Bibliography C
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Note on Nörlund’s polynomial
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Proc. Amer. Math. Soc. 11 (3), pp. 452–455.
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The fourth Painlevé equation and associated special polynomials.
J. Math. Phys. 44 (11), pp. 5350–5374.
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Further formulas for calculating approximate values of the zeros of certain combinations of Bessel functions.
IEEE Trans. Microwave Theory Tech. 11 (6), pp. 546–547.
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Validated computation of certain hypergeometric functions.
ACM Trans. Math. Software 38 (2), pp. Art. 11, 20.
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Exact elliptic compactons in generalized Korteweg-de Vries equations.
Complexity 11 (6), pp. 30–34.
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33: 1.12 Continued Fractions
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and are called the th (canonical) numerator and denominator respectively.
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is equivalent to if there is a sequence , ,
, such that … ►Define … ►The continued fraction converges when … ►Then the convergents satisfy …
, such that … ►Define … ►The continued fraction converges when … ►Then the convergents satisfy …
34: 21.1 Special Notation
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positive integers. | |
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th element of vector . | |
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Transpose of . | |
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set of all elements of the form “”. | |
set of all elements of , modulo elements of . Thus two elements of are equivalent if they are both in and their difference is in . (For an example see §20.12(ii).) | |
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35: Bibliography B
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Evaluation of the incomplete gamma function of imaginary argument by Chebyshev polynomials.
Math. Comp. 15 (73), pp. 7–11.
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Ramanujan’s theories of elliptic functions to alternative bases.
Trans. Amer. Math. Soc. 347 (11), pp. 4163–4244.
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Vortices in Ginzburg-Landau Equations.
In Proceedings of the International Congress of Mathematicians,
Vol. III (Berlin, 1998),
pp. 11–19.
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Theoretical and experimental investigation of the elliptical annual ring antenna.
IEEE Trans. Antennas and Propagation 36 (11), pp. 1526–1530.
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Rainbow over Woolsthorpe Manor.
Notes and Records Roy. Soc. London 36 (1), pp. 3–11 (1 plate).
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36: 3.7 Ordinary Differential Equations
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►The path is partitioned at points labeled successively , with , .
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►Write , , expand and in Taylor series (§1.10(i)) centered at , and apply (3.7.2).
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►If, for example, , then on moving the contributions of and to the right-hand side of (3.7.13) the resulting system of equations is not tridiagonal, but can readily be made tridiagonal by annihilating the elements of that lie below the main diagonal and its two adjacent diagonals.
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►The values are the eigenvalues and the corresponding solutions of the differential equation are the eigenfunctions.
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►where and
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37: Software Index
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Open Source | With Book | Commercial | |||||||||||||||||||||||
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8.28(iv) , , | ✓ | ✓ | |||||||||||||||||||||||
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11 Struve and Related Functions | |||||||||||||||||||||||||
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24.21(ii) , , , | ✓ | ✓ | ✓ | ✓ | a | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | Derive, MuPAD | ||||||||||||
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25.21(v) , | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||||||||||||
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30 Spheroidal Wave Functions | |||||||||||||||||||||||||
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38: 3.6 Linear Difference Equations
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►Given numerical values of and , the solution of the equation
…These errors have the effect of perturbing the solution by unwanted small multiples of and of an independent solution , say.
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►The unwanted multiples of now decay in comparison with , hence are of little consequence.
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►The latter method is usually superior when the true value of is zero or pathologically small.
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►beginning with .
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