Kummer solutions
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1: 15.10 Hypergeometric Differential Equation
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§15.10(ii) Kummer’s 24 Solutions and Connection Formulas
โบThe three pairs of fundamental solutions given by (15.10.2), (15.10.4), and (15.10.6) can be transformed into 18 other solutions by means of (15.8.1), leading to a total of 24 solutions known as Kummer’s solutions. … โบThe connection formulas for the principal branches of Kummer’s solutions are: … โบ
15.10.21
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15.10.25
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2: 31.11 Expansions in Series of Hypergeometric Functions
3: 13.2 Definitions and Basic Properties
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Standard Solutions
โบThe first two standard solutions are: … โบAnother standard solution of (13.2.1) is , which is determined uniquely by the property … โบ§13.2(v) Numerically Satisfactory Solutions
… โบ …4: 12.7 Relations to Other Functions
5: 13.14 Definitions and Basic Properties
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โบStandard solutions are:
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6: 13.29 Methods of Computation
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โบThe integral representations (13.4.1) and (13.4.4) can be used to compute the Kummer functions, and (13.16.1) and (13.16.5) for the Whittaker functions.
In Allasia and Besenghi (1991) and Allasia and Besenghi (1987a) the high accuracy of the trapezoidal rule for the computation of Kummer functions is described.
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โบwith recessive solution
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โบwith recessive solution
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โบIn Colman et al. (2011) an algorithm is described that uses expansions in continued fractions for high-precision computation of , when and are real and is a positive integer.
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7: Errata
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Equation (13.2.7)
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Equation (13.2.8)
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Equation (13.2.10)
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13.2.7
The equality has been added to the original equation to express an explicit connection between the two standard solutions of Kummer’s equation. Note also that the notation has been changed to .
Reported 2015-02-10 by Adri Olde Daalhuis.
13.2.8
The equality has been added to the original equation to express an explicit connection between the two standard solutions of Kummer’s equation.
Reported 2015-02-10 by Adri Olde Daalhuis.
13.2.10
The equality has been added to the original equation to express an explicit connection between the two standard solutions of Kummer’s equation. Note also that the notation has been introduced.
Reported 2015-02-10 by Adri Olde Daalhuis.
8: 31.3 Basic Solutions
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โบThe full set of 192 local solutions of (31.2.1), equivalent in 8 sets of 24, resembles Kummer’s set of 24 local solutions of the hypergeometric equation, which are equivalent in 4 sets of 6 solutions (§15.10(ii)); see Maier (2007).