zeros of analytic functions
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21: 2.7 Differential Equations
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►is one at which the coefficients and are analytic.
All solutions are analytic at an ordinary point, and their Taylor-series expansions are found by equating coefficients.
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►Hence unless the series (2.7.8) terminate (in which case the corresponding is zero) they diverge.
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►Although the expansions (2.7.14) apply only in the sectors (2.7.15) and (2.7.16), each solution can be continued analytically into any other sector.
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►In a finite or infinite interval let be real, positive, and twice-continuously differentiable, and be continuous.
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22: 33.2 Definitions and Basic Properties
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§33.2(i) Coulomb Wave Equation
… ►§33.2(ii) Regular Solution
… ► is a real and analytic function of on the open interval , and also an analytic function of when . … ►As in the case of , the solutions and are analytic functions of when . Also, are analytic functions of when . …23: 35.2 Laplace Transform
§35.2 Laplace Transform
►Definition
… ►where the integration variable ranges over the space . … ►Then (35.2.1) converges absolutely on the region , and is a complex analytic function of all elements of . ►Inversion Formula
…24: Bibliography M
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Asymptotic expansions for the zeros of certain special functions.
J. Comput. Appl. Math. 145 (2), pp. 261–267.
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The Theory of Analytic Functions: A Brief Course.
“Mir”, Moscow.
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On the zeros of cross-product Bessel functions.
J. Math. Mech. 16, pp. 447–452.
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Inequalities for the zeros of Bessel functions.
SIAM J. Math. Anal. 8 (1), pp. 166–170.
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Analytic expressions for integrals of products of spherical Bessel functions.
J. Phys. A 24 (7), pp. 1435–1453.
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25: Bibliography S
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Coulomb functions analytic in the energy.
Comput. Phys. Comm. 25 (1), pp. 87–95.
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A global Newton method for the zeros of cylinder functions.
Numer. Algorithms 18 (3-4), pp. 259–276.
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Bounds on differences of adjacent zeros of Bessel functions and iterative relations between consecutive zeros.
Math. Comp. 70 (235), pp. 1205–1220.
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The real zeros of Struve’s function.
SIAM J. Math. Anal. 1 (3), pp. 365–375.
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Numerical Methods Based on Sinc and Analytic Functions.
Springer Series in Computational Mathematics, Vol. 20, Springer-Verlag, New York.
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26: 25.16 Mathematical Applications
§25.16 Mathematical Applications
… ►which is related to the Riemann zeta function by …where the sum is taken over the nontrivial zeros of . … ►§25.16(ii) Euler Sums
… ► is analytic for , and can be extended meromorphically into the half-plane for every positive integer by use of the relations …27: 33.23 Methods of Computation
§33.23 Methods of Computation
►§33.23(i) Methods for the Confluent Hypergeometric Functions
►The methods used for computing the Coulomb functions described below are similar to those in §13.29. … ►Thompson and Barnett (1985, 1986) and Thompson (2004) use combinations of series, continued fractions, and Padé-accelerated asymptotic expansions (§3.11(iv)) for the analytic continuations of Coulomb functions. … ►§33.23(vii) WKBJ Approximations
…28: 35.7 Gaussian Hypergeometric Function of Matrix Argument
§35.7 Gaussian Hypergeometric Function of Matrix Argument
►§35.7(i) Definition
… ►Jacobi Form
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… ►Let (a) be orthogonally invariant, so that is a symmetric function of , the eigenvalues of the matrix argument ; (b) be analytic in in a neighborhood of ; (c) satisfy . …29: Bibliography P
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Interlacing of positive real zeros of Bessel functions.
J. Math. Anal. Appl. 375 (1), pp. 320–322.
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Complex zeros of the modified Bessel function
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Math. Comp. 26 (120), pp. 949–953.
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Chebyshev series approximations for the zeros of the Bessel functions.
J. Comput. Phys. 53 (1), pp. 188–192.
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On the computation of zeros and turning points of Bessel functions.
Bull. Soc. Math. Grèce (N.S.) 31, pp. 117–122.
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Fast analytic formulas for the modified Bessel functions of imaginary order for spectral line broadening calculations.
J. Quantit. Spec. and Rad. Trans. 62 (4), pp. 389–395.
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30: 19.2 Definitions
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►Let be a cubic or quartic polynomial in with simple zeros, and let be a rational function of and containing at least one odd power of .
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►For more details on the analytical continuation of these complete elliptic integrals see Lawden (1989, §§8.12–8.14).
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