acceleration%20of%20convergence
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11: 33.23 Methods of Computation
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►The power-series expansions of §§33.6 and 33.19 converge for all finite values of the radii and , respectively, and may be used to compute the regular and irregular solutions.
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►Thompson and Barnett (1985, 1986) and Thompson (2004) use combinations of series, continued fractions, and Padé-accelerated asymptotic expansions (§3.11(iv)) for the analytic continuations of Coulomb functions.
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12: 8.26 Tables
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Khamis (1965) tabulates for , to 10D.
Abramowitz and Stegun (1964, pp. 245–248) tabulates for , to 7D; also for , to 6S.
Pagurova (1961) tabulates for , to 4-9S; for , to 7D; for , to 7S or 7D.
Zhang and Jin (1996, Table 19.1) tabulates for , to 7D or 8S.
13: 23 Weierstrass Elliptic and Modular
Functions
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14: 2.11 Remainder Terms; Stokes Phenomenon
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►Even when the series converges this is unwise: the tail needs to be majorized rigorously before the result can be guaranteed.
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►The transformations in §3.9 for summing slowly convergent series can also be very effective when applied to divergent asymptotic series.
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►Similar improvements are achievable by Aitken’s -process, Wynn’s -algorithm, and other acceleration transformations.
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►For example, using double precision is found to agree with (2.11.31) to 13D.
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►For example, extrapolated values may converge to an accurate value on one side of a Stokes line (§2.11(iv)), and converge to a quite inaccurate value on the other.
15: 36 Integrals with Coalescing Saddles
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16: Gergő Nemes
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►As of September 20, 2021, Nemes performed a complete analysis and acted as main consultant for the update of the source citation and proof metadata for every formula in Chapter 25 Zeta and Related Functions.
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17: Wolter Groenevelt
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►As of September 20, 2022, Groenevelt performed a complete analysis and acted as main consultant for the update of the source citation and proof metadata for every formula in Chapter 18 Orthogonal Polynomials.
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18: 33.24 Tables
19: 6.16 Mathematical Applications
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►Compare Figure 6.16.1.
►This nonuniformity of convergence is an illustration of the Gibbs
phenomenon.
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