Stokes line
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1: 2.11 Remainder Terms; Stokes Phenomenon
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►The choice of and is facilitated by a knowledge of the relevant Stokes lines; see §2.11(iv) below.
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►Rays (or curves) on which one contribution in a compound asymptotic expansion achieves maximum dominance over another are called Stokes lines ( in the present example).
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►The relevant Stokes lines are for , and for .
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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.
2: 36.5 Stokes Sets
§36.5 Stokes Sets
►§36.5(i) Definitions
… ►§36.5(ii) Cuspoids
… ►Elliptic Umbilic Stokes Set (Codimension three)
… ►§36.5(iv) Visualizations
…3: 8.22 Mathematical Applications
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8.22.1
►plays a fundamental role in re-expansions of remainder terms in asymptotic expansions, including exponentially-improved expansions and a smooth interpretation of the Stokes phenomenon.
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►The function , with and , has an intimate connection with the Riemann zeta function (§25.2(i)) on the critical line
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4: Bibliography D
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Bessel functions of purely imaginary order, with an application to second-order linear differential equations having a large parameter.
SIAM J. Math. Anal. 21 (4), pp. 995–1018.
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Asymptotics of the generalized exponential integral, and error bounds in the uniform asymptotic smoothing of its Stokes discontinuities.
Proc. Roy. Soc. London Ser. A 452, pp. 1351–1367.
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