Jacobi form
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11: 29.12 Definitions
12: 20.14 Methods of Computation
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►The Fourier series of §20.2(i) usually converge rapidly because of the factors or , and provide a convenient way of calculating values of .
Similarly, their -differentiated forms provide a convenient way of calculating the corresponding derivatives.
For instance, the first three terms of (20.2.1) give the value of () to 12 decimal places.
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►For instance, to find we use (20.7.32) with , .
…Hence the first term of the series (20.2.3) for suffices for most purposes.
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13: 3.10 Continued Fractions
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►A continued fraction of the form
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Jacobi Fractions
►A continued fraction of the form …is called a Jacobi fraction (-fraction). … ►can be written in the form …14: 29.15 Fourier Series and Chebyshev Series
15: 20.13 Physical Applications
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►In the singular limit , the functions , , become integral kernels of Feynman path integrals (distribution-valued Green’s functions); see Schulman (1981, pp. 194–195).
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16: 29.2 Differential Equations
17: 22.8 Addition Theorems
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§22.8(ii) Alternative Forms for Sum of Two Arguments
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22.8.14
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22.8.15
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22.8.17
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22.8.23
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18: 18.18 Sums
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Jacobi
… ►Jacobi
… ►See (18.17.45) and (18.17.49) for integrated forms of (18.18.22) and (18.18.23), respectively. … ►Jacobi
… ►See also (18.38.3) for a finite sum of Jacobi polynomials. …19: 18.15 Asymptotic Approximations
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§18.15(i) Jacobi
… ►For large , fixed , and , Dunster (1999) gives asymptotic expansions of that are uniform in unbounded complex -domains containing . …This reference also supplies asymptotic expansions of for large , fixed , and . … ►The first term of this expansion also appears in Szegő (1975, Theorem 8.21.7). … ►For asymptotic approximations of Jacobi, ultraspherical, and Laguerre polynomials in terms of Hermite polynomials, see López and Temme (1999a). …20: 23.15 Definitions
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►In §§23.15–23.19, and
denote the Jacobi modulus and complementary modulus, respectively, and () denotes the nome; compare §§20.1 and 22.1.
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►The set of all bilinear transformations of this form is denoted by SL (Serre (1973, p. 77)).
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►If, as a function of , is analytic at , then is called a modular form.
If, in addition, as , then is called a cusp form.
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