Jacobi imaginary transformation
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11: 23.6 Relations to Other Functions
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23.6.11
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23.6.12
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►Also, , , are the lattices with generators , , , respectively.
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►Similar results for the other nine Jacobi functions can be constructed with the aid of the transformations given by Table 22.4.3.
►For representations of the Jacobi functions , , and as quotients of -functions see Lawden (1989, §§6.2, 6.3).
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12: 22.17 Moduli Outside the Interval [0,1]
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§22.17(i) Real or Purely Imaginary Moduli
►Jacobian elliptic functions with real moduli in the intervals and , or with purely imaginary moduli are related to functions with moduli in the interval by the following formulas. … ►
22.17.7
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§22.17(ii) Complex Moduli
… ►In particular, the Landen transformations in §§22.7(i) and 22.7(ii) are valid for all complex values of , irrespective of which values of and are chosen—as long as they are used consistently. …13: 18.17 Integrals
14: 31.7 Relations to Other Functions
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►They are analogous to quadratic and cubic hypergeometric transformations (§§15.8(iii)–15.8(v)).
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►Joyce (1994) gives a reduction in which the independent variable is transformed not polynomially or rationally, but algebraically.
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►With and
…The solutions (31.3.1) and (31.3.5) transform into even and odd solutions of Lamé’s equation, respectively.
Similar specializations of formulas in §31.3(ii) yield solutions in the neighborhoods of the singularities , , and , where and are related to as in §19.2(ii).
15: Bibliography B
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Transformations of generalized hypergeometric series.
Proc. London Math. Soc. (2) 29 (2), pp. 495–502.
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The generating function of Jacobi polynomials.
J. London Math. Soc. 13, pp. 8–12.
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Numerical evaluation of the zero-order Hankel transform using Filon quadrature philosophy.
Appl. Math. Lett. 9 (5), pp. 21–26.
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Orthogonality relations for the associated Legendre functions of imaginary order.
Integral Transforms Spec. Funct. 24 (4), pp. 331–337.
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Stieltjes transforms and the Stokes phenomenon.
Proc. Roy. Soc. London Ser. A 429, pp. 227–246.
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16: 22.20 Methods of Computation
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►To compute , , to 10D when , .
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§22.20(iii) Landen Transformations
… ►If either or is given, then we use , , , and , obtaining the values of the theta functions as in §20.14. … ►§22.20(vi) Related Functions
… ► …17: 18.3 Definitions
§18.3 Definitions
►The classical OP’s comprise the Jacobi, Laguerre and Hermite polynomials. … ►It is also related to a discrete Fourier-cosine transform, see Britanak et al. (2007). … ►Jacobi on Other Intervals
… ►For and a finite system of Jacobi polynomials (called pseudo Jacobi polynomials or Routh–Romanovski polynomials) is orthogonal on with . …18: 1.14 Integral Transforms
§1.14 Integral Transforms
►§1.14(i) Fourier Transform
… ►§1.14(iii) Laplace Transform
… ►Fourier Transform
… ►Laplace Transform
…19: 20.11 Generalizations and Analogs
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►If both are positive, then allows inversion of its arguments as a modular transformation (compare (23.15.3) and (23.15.4)):
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►This is Jacobi’s inversion problem of §20.9(ii).
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►Each provides an extension of Jacobi’s inversion problem.
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►For , , and , define twelve combined theta functions
by
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20: 22.18 Mathematical Applications
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►where is Jacobi’s epsilon function (§22.16(ii)).
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►By use of the functions and , parametrizations of algebraic equations, such as
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