Whittaker%E2%80%93Hill%20equation
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11: 28.20 Definitions and Basic Properties
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§28.20(i) Modified Mathieu’s Equation
►When is replaced by , (28.2.1) becomes the modified Mathieu’s equation: ►
28.20.1
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28.20.2
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►Then from §2.7(ii) it is seen that equation (28.20.2) has independent and unique solutions that are asymptotic to as in the respective sectors , being an arbitrary small positive constant.
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12: 13.28 Physical Applications
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§13.28(i) Exact Solutions of the Wave Equation
►The reduced wave equation in paraboloidal coordinates, , , , can be solved via separation of variables , where …and , , denotes any pair of solutions of Whittaker’s equation (13.14.1). … ► ►§13.28(ii) Coulomb Functions
…13: 13.25 Products
§13.25 Products
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13.25.1
►For integral representations, integrals, and series containing products of and see Erdélyi et al. (1953a, §6.15.3).
14: 13.20 Uniform Asymptotic Approximations for Large
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§13.20(i) Large , Fixed
… ►Equations (13.20.17) and (13.20.18) are simpler than (6. … … ►For uniform approximations of and , and real, one or both large, see Dunster (2003a).15: 23 Weierstrass Elliptic and Modular
Functions
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16: 13.15 Recurrence Relations and Derivatives
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§13.15(i) Recurrence Relations
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13.15.1
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13.15.2
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13.15.3
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§13.15(ii) Differentiation Formulas
…17: Bibliography D
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Irreducibility of certain generalized Bernoulli polynomials belonging to quadratic residue class characters.
J. Number Theory 25 (1), pp. 72–80.
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Theta functions and non-linear equations.
Uspekhi Mat. Nauk 36 (2(218)), pp. 11–80 (Russian).
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Uniform asymptotic expansions for Whittaker’s confluent hypergeometric functions.
SIAM J. Math. Anal. 20 (3), pp. 744–760.
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Error analysis in a uniform asymptotic expansion for the generalised exponential integral.
J. Comput. Appl. Math. 80 (1), pp. 127–161.
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Uniform asymptotic approximations for the Whittaker functions and
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Anal. Appl. (Singap.) 1 (2), pp. 199–212.
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18: 20 Theta Functions
Chapter 20 Theta Functions
…19: Bibliography
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Algorithm 511: CDC 6600 subroutines IBESS and JBESS for Bessel functions and , ,
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ACM Trans. Math. Software 3 (1), pp. 93–95.
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Algorithm 683: A portable FORTRAN subroutine for exponential integrals of a complex argument.
ACM Trans. Math. Software 16 (2), pp. 178–182.
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Special Functions.
Encyclopedia of Mathematics and its Applications, Vol. 71, Cambridge University Press, Cambridge.
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The Whittaker-Hill equation and the wave equation in paraboloidal co-ordinates.
Proc. Roy. Soc. Edinburgh Sect. A 67, pp. 265–276.
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Quadratic differentials and asymptotics of Laguerre polynomials with varying complex parameters.
J. Math. Anal. Appl. 416 (1), pp. 52–80.
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