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11: 28.23 Expansions in Series of Bessel Functions
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28.23.6
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28.23.8
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28.23.10
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28.23.12
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►When the series in the even-numbered equations converge for and , and the series in the odd-numbered equations converge for and .
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12: 33.5 Limiting Forms for Small , Small , or Large
§33.5 Limiting Forms for Small , Small , or Large
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33.5.6
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§33.5(iv) Large
►As with and () fixed, …13: 33.14 Definitions and Basic Properties
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►Again, there is a regular singularity at with indices and , and an irregular singularity of rank 1 at .
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►The functions and are defined by
…An alternative formula for is
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►Note that the functions , , do not form a complete orthonormal system.
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►With arguments suppressed,
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14: 33.8 Continued Fractions
15: 33.16 Connection Formulas
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§33.16(i) and in Terms of and
… ►where is given by (33.2.5) or (33.2.6). … ►and again define by (33.14.11) or (33.14.12). … ►and again define by (33.14.11) or (33.14.12). … ►When denote , , and by (33.16.8) and (33.16.9). …16: 33.2 Definitions and Basic Properties
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►This differential equation has a regular singularity at with indices and , and an irregular singularity of rank 1 at (§§2.7(i), 2.7(ii)).
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►The normalizing constant
is always positive, and has the alternative form
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is the Coulomb phase shift.
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and are complex conjugates, and their real and imaginary parts are given by
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►As in the case of , the solutions and are analytic functions of when .
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17: 24.14 Sums
§24.14 Sums
►§24.14(i) Quadratic Recurrence Relations
… ►§24.14(ii) Higher-Order Recurrence Relations
►In the following two identities, valid for , the sums are taken over all nonnegative integers with . … ►In the next identity, valid for , the sum is taken over all positive integers with . …18: 33.19 Power-Series Expansions in
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►Here is defined by (33.14.6), is defined by (33.14.11) or (33.14.12), , , and
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33.19.1
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19: 33.20 Expansions for Small
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►where
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►As with and fixed,
…where is given by (33.14.11), (33.14.12), and
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►For a comprehensive collection of asymptotic expansions that cover and as and are uniform in , including unbounded values, see Curtis (1964a, §7).
These expansions are in terms of elementary functions, Airy functions, and Bessel functions of orders and .