regular solutions
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11: 15.11 Riemann’s Differential Equation
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►The importance of (15.10.1) is that any homogeneous linear differential equation of the second order with at most three distinct singularities, all regular, in the extended plane can be transformed into (15.10.1).
The most general form is given by
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►denotes the set of solutions of (15.10.1).
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§15.11(ii) Transformation Formulas
… ►The reduction of a general homogeneous linear differential equation of the second order with at most three regular singularities to the hypergeometric differential equation is given by …12: 31.12 Confluent Forms of Heun’s Equation
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►Confluent forms of Heun’s differential equation (31.2.1) arise when two or more of the regular singularities merge to form an irregular singularity.
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►This has regular singularities at and , and an irregular singularity of rank 1 at .
►Mathieu functions (Chapter 28), spheroidal wave functions (Chapter 30), and Coulomb spheroidal functions (§30.12) are special cases of solutions of the confluent Heun equation.
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►This has a regular singularity at , and an irregular singularity at of rank .
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►This has one singularity, an irregular singularity of rank at .
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13: 13.2 Definitions and Basic Properties
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►This equation has a regular singularity at the origin with indices and , and an irregular singularity at infinity of rank one.
…In effect, the regular singularities of the hypergeometric differential equation at and coalesce into an irregular singularity at .
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Standard Solutions
… ►§13.2(v) Numerically Satisfactory Solutions
… ► …14: Bibliography
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Computation of the regular confluent hypergeometric function.
The Mathematica Journal 5 (4), pp. 74–76.
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Asymptotics of solutions of the generalized sine-Gordon equation, the third Painlevé equation and the d’Alembert equation.
Dokl. Akad. Nauk SSSR 280 (2), pp. 265–268 (Russian).
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Regular and irregular Coulomb wave functions expressed in terms of Bessel-Clifford functions.
J. Math. Physics 33, pp. 111–116.
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Rational solutions of Painlevé equations.
Stud. Appl. Math. 61 (1), pp. 31–53.
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Perturbation solutions of the ellipsoidal wave equation.
Quart. J. Math. Oxford Ser. (2) 7, pp. 161–174.
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15: 13.14 Definitions and Basic Properties
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►It has a regular singularity at the origin with indices , and an irregular singularity at infinity of rank one.
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Standard Solutions
►Standard solutions are: … ►§13.14(v) Numerically Satisfactory Solutions
►Fundamental pairs of solutions of (13.14.1) that are numerically satisfactory (§2.7(iv)) in the neighborhood of infinity are …16: 10.2 Definitions
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►This differential equation has a regular singularity at with indices , and an irregular singularity at of rank ; compare §§2.7(i) and 2.7(ii).
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§10.2(ii) Standard Solutions
… ►This solution of (10.2.1) is an analytic function of , except for a branch point at when is not an integer. … ►Each solution has a branch point at for all . … ►§10.2(iii) Numerically Satisfactory Pairs of Solutions
…17: 2.7 Differential Equations
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►All solutions are analytic at an ordinary point, and their Taylor-series expansions are found by equating coefficients.
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18: 10.47 Definitions and Basic Properties
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►Equations (10.47.1) and (10.47.2) each have a regular singularity at with indices , , and an irregular singularity at of rank ; compare §§2.7(i)–2.7(ii).
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§10.47(ii) Standard Solutions
… ►§10.47(iii) Numerically Satisfactory Pairs of Solutions
►For (10.47.1) numerically satisfactory pairs of solutions are given by Table 10.2.1 with the symbols , , , and replaced by , , , and , respectively. ►For (10.47.2) numerically satisfactory pairs of solutions are and in the right half of the -plane, and and in the left half of the -plane. …19: 30.2 Differential Equations
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30.2.1
►This equation has regular singularities at with exponents and an irregular singularity of rank 1 at (if ).
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30.2.4
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