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1: 24.1 Special Notation
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Bernoulli Numbers and Polynomials
►The origin of the notation , , is not clear. … ►Euler Numbers and Polynomials
… ►Its coefficients were first studied in Euler (1755); they were called Euler numbers by Raabe in 1851. The notations , , as defined in §24.2(ii), were used in Lucas (1891) and Nörlund (1924). …2: 33.18 Limiting Forms for Large
3: 33.13 Complex Variable and Parameters
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►The functions , , and may be extended to noninteger values of by generalizing , and supplementing (33.6.5) by a formula derived from (33.2.8) with expanded via (13.2.42).
►These functions may also be continued analytically to complex values of , , and .
The quantities , , and , given by (33.2.6), (33.2.10), and (33.4.1), respectively, must be defined consistently so that
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33.13.1
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33.13.2
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4: 33.5 Limiting Forms for Small , Small , or Large
§33.5 Limiting Forms for Small , Small , or Large
… ►§33.5(iv) Large
►As with and () fixed, … ►
33.5.9
5: 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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6: 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). …7: 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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8: 33.19 Power-Series Expansions in
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33.19.3
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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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9: 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 .