expansions in series of hypergeometric functions
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21: 13.2 Definitions and Basic Properties
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►In effect, the regular singularities of the hypergeometric differential equation at and coalesce into an irregular singularity at .
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►The first two standard solutions are:
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►The series (13.2.2) and (13.2.3) converge for all .
is entire in
and , and is a meromorphic function of .
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Kummer’s Transformations
…22: 15.19 Methods of Computation
§15.19 Methods of Computation
… ►For it is always possible to apply one of the linear transformations in §15.8(i) in such a way that the hypergeometric function is expressed in terms of hypergeometric functions with an argument in the interval . … ►The representation (15.6.1) can be used to compute the hypergeometric function in the sector . … ► … ►In Colman et al. (2011) an algorithm is described that uses expansions in continued fractions for high-precision computation of the Gauss hypergeometric function, when the variable and parameters are real and one of the numerator parameters is a positive integer. …23: 35.8 Generalized Hypergeometric Functions of Matrix Argument
§35.8 Generalized Hypergeometric Functions of Matrix Argument
… ►The generalized hypergeometric function with matrix argument , numerator parameters , and denominator parameters is … ►If for some satisfying , , then the series expansion (35.8.1) terminates. … ►Multidimensional Mellin–Barnes integrals are established in Ding et al. (1996) for the functions and of matrix argument. A similar result for the function of matrix argument is given in Faraut and Korányi (1994, p. 346). …24: Bibliography F
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Uniform asymptotic expansions for hypergeometric functions with large parameters IV.
Anal. Appl. (Singap.) 12 (6), pp. 667–710.
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Expansions of hypergeometric functions in hypergeometric functions.
Math. Comp. 15 (76), pp. 390–395.
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Studies on Divergent Series and Summability & The Asymptotic Developments of Functions Defined by Maclaurin Series.
Chelsea Publishing Co., New York.
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Asymptotic expansions of the Lebesgue constants for Jacobi series.
Pacific J. Math. 122 (2), pp. 391–415.
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Series expansions of symmetric elliptic integrals.
Math. Comp. 81 (278), pp. 957–990.
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25: 13.31 Approximations
§13.31 Approximations
►§13.31(i) Chebyshev-Series Expansions
►Luke (1969b, pp. 35 and 25) provides Chebyshev-series expansions of and that include the intervals and , respectively, where is an arbitrary positive constant. … ►In Luke (1977a) the following rational approximation is given, together with its rate of convergence. … ►
13.31.1
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26: 16.4 Argument Unity
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►The function
is analytic in the parameters when its series expansion converges and the bottom parameters are not negative integers or zero.
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27: Bibliography G
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Contiguous relations and summation and transformation formulae for basic hypergeometric series.
J. Difference Equ. Appl. 19 (12), pp. 2029–2042.
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Basic Hypergeometric Series.
Encyclopedia of Mathematics and its Applications, Vol. 35, Cambridge University Press, Cambridge.
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New inequalities for the zeros of confluent hypergeometric functions.
In Asymptotic and computational analysis (Winnipeg, MB, 1989),
pp. 175–192.
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Gauss quadrature approximations to hypergeometric and confluent hypergeometric functions.
J. Comput. Appl. Math. 139 (1), pp. 173–187.
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Multilateral summation theorems for ordinary and basic hypergeometric series in
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SIAM J. Math. Anal. 18 (6), pp. 1576–1596.
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28: 13.14 Definitions and Basic Properties
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►The series
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►In general and are many-valued functions of with branch points at and .
The principal branches correspond to the principal branches of the functions
and on the right-hand sides of the equations (13.14.2) and (13.14.3); compare §4.2(i).
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►Although does not exist when , many formulas containing continue to apply in their limiting form.
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►Except when , each branch of the functions
and is entire in
and .
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29: Bibliography V
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On the series expansion method for computing incomplete elliptic integrals of the first and second kinds.
Math. Comp. 23 (105), pp. 61–69.
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An infinite series of Weber’s parabolic cylinder functions.
Proc. Benares Math. Soc. (N.S.) 3, pp. 37.
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A note on the asymptotic expansion of generalized hypergeometric functions.
Anal. Appl. (Singap.) 12 (1), pp. 107–115.
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Fourier series representation of Ferrers function
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Asymptotic expansion of the generalized hypergeometric function
as for
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Anal. Appl. (Singap.) 21 (2), pp. 535–545.
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