convergence properties
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11: 28.31 Equations of Whittaker–Hill and Ince
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►For proofs and further information, including convergence of the series (28.31.4), (28.31.5), see Arscott (1967).
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►More important are the double orthogonality relations for or or both, given by
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12: 16.5 Integral Representations and Integrals
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►where the contour of integration separates the poles of , , from those of .
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►Then the integral converges when provided that , or when provided that , and provides an integral representation of the left-hand side with these conditions.
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►Then the integral converges when and .
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13: 13.2 Definitions and Basic Properties
§13.2 Definitions and Basic Properties
… ►The series (13.2.2) and (13.2.3) converge for all . … … ►Another standard solution of (13.2.1) is , which is determined uniquely by the property …14: 20.11 Generalizations and Analogs
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►For applications to rapidly convergent expansions for see Chudnovsky and Chudnovsky (1988), and for applications in the construction of elliptic-hypergeometric series see Rosengren (2004).
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►Multidimensional theta functions with characteristics are defined in §21.2(ii) and their properties are described in §§21.3(ii), 21.5(ii), and 21.6.
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15: 18.38 Mathematical Applications
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►The monic Chebyshev polynomial , , enjoys the ‘minimax’ property on the interval , that is, has the least maximum value among all monic polynomials of degree .
In consequence, expansions of functions that are infinitely differentiable on in series of Chebyshev polynomials usually converge extremely rapidly.
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16: 33.14 Definitions and Basic Properties
§33.14 Definitions and Basic Properties
►§33.14(i) Coulomb Wave Equation
… ►This includes , hence can be expanded in a convergent power series in in a neighborhood of (§33.20(ii)). ►§33.14(iii) Irregular Solution
… ►The function has the following properties: …17: 8.17 Incomplete Beta Functions
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§8.17(i) Definitions and Basic Properties
… ►The and convergents are less than , and the and convergents are greater than . … ►The expansion (8.17.22) converges rapidly for . For or , more rapid convergence is obtained by computing and using (8.17.4). … ►§8.17(vii) Addendum to 8.17(i) Definitions and Basic Properties
…18: 10.74 Methods of Computation
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►In other circumstances the power series are prone to slow convergence and heavy numerical cancellation.
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►Moreover, because of their double asymptotic properties (§10.41(v)) these expansions can also be used for large or , whether or not is large.
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►Newton’s rule is quadratically convergent and Halley’s rule is cubically convergent.
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19: 3.11 Approximation Techniques
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►The iterative process converges locally and quadratically (§3.8(i)).
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►They enjoy an orthogonal property with respect to integrals:
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►converges uniformly.
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►The property
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20: 3.6 Linear Difference Equations
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►The normalizing factor can be the true value of divided by its trial value, or can be chosen to satisfy a known property of the wanted solution of the form
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►For further information on Miller’s algorithm, including examples, convergence proofs, and error analyses, see Wimp (1984, Chapter 4), Gautschi (1967, 1997b), and Olver (1964a).
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►For further information, including a more general form of normalizing condition, other examples, convergence proofs, and error analyses, see Olver (1967a), Olver and Sookne (1972), and Wimp (1984, Chapter 6).
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