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31: 10.17 Asymptotic Expansions for Large Argument
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10.17.3
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10.17.7
►Corresponding expansions for other ranges of can be obtained by combining (10.17.3), (10.17.5), (10.17.6) with the continuation formulas (10.11.1), (10.11.3), (10.11.4) (or (10.11.7), (10.11.8)), and also the connection formula given by the second of (10.4.4).
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10.17.15
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10.17.18
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32: 13.29 Methods of Computation
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►For and this means that in the sector we may integrate along outward rays from the origin with initial values obtained from (13.2.2) and (13.14.2).
►For and we may integrate along outward rays from the origin in the sectors , with initial values obtained from connection formulas in §13.2(vii), §13.14(vii).
In the sector the integration has to be towards the origin, with starting values computed from asymptotic expansions (§§13.7 and 13.19).
On the rays , integration can proceed in either direction.
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13.29.6
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33: 15.16 Products
34: 16.2 Definition and Analytic Properties
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16.2.1
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►The branch obtained by introducing a cut from to on the real axis, that is, the branch in the sector , is the principal branch (or principal
value) of ; compare §4.2(i).
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16.2.3
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16.2.4
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16.2.5
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35: 6.18 Methods of Computation
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►Also, other ranges of can be covered by use of the continuation formulas of §6.4.
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►Zeros of and can be computed to high precision by Newton’s rule (§3.8(ii)), using values supplied by the asymptotic expansion (6.13.2) as initial approximations.
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36: 6.2 Definitions and Interrelations
37: 2.6 Distributional Methods
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►To derive an asymptotic expansion of for large values of , with , we assume that possesses an asymptotic expansion of the form
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2.6.13
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►The expansion (2.6.7) follows immediately from (2.6.27) with and ; its region of validity is ().
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38: 17.6 Function
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17.6.2
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17.6.3
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17.6.5
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17.6.8
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►where , , and the contour of integration separates the poles of from those of , and the infimum of the distances of the poles from the contour is positive.
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39: Bibliography T
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Special functions in phase space: Mathieu functions.
J. Phys. A 31 (31), pp. 6725–6739.
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Dunkl shift operators and Bannai-Ito polynomials.
Adv. Math. 229 (4), pp. 2123–2158.
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