hyperbolic%20umbilic%20catastrophe
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21: 36.9 Integral Identities
22: 4.32 Inequalities
§4.32 Inequalities
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4.32.1
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4.32.2
,
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4.32.3
, ,
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►For these and other inequalities involving hyperbolic functions see Mitrinović (1964, pp. 61, 76, 159) and Mitrinović (1970, p. 270).
23: 4.31 Special Values and Limits
24: 20.10 Integrals
25: 4.41 Sums
§4.41 Sums
►For sums of hyperbolic functions see Gradshteyn and Ryzhik (2000, Chapter 1), Hansen (1975, §43), Prudnikov et al. (1986a, §5.3), and Zucker (1979).26: 4.34 Derivatives and Differential Equations
§4.34 Derivatives and Differential Equations
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4.34.4
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4.34.5
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►With , the general solutions of the differential equations
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4.34.11
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27: 7.8 Inequalities
28: Bibliography F
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Sur certaines sommes des intégral-cosinus.
Bull. Soc. Math. Phys. Serbie 12, pp. 13–20 (French).
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Tables of Elliptic Integrals of the First, Second, and Third Kind.
Technical report
Technical Report ARL 64-232, Aerospace Research Laboratories, Wright-Patterson Air Force Base, Ohio.
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Error bounds for a uniform asymptotic expansion of the Legendre function
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SIAM J. Math. Anal. 21 (2), pp. 523–535.
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On weighted polynomial approximation on the whole real axis.
Acta Math. Acad. Sci. Hungar. 20, pp. 223–225.
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29: 36.12 Uniform Approximation of Integrals
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►Define a mapping by relating to the normal form (36.2.1) of in the following way:
…with the functions and determined by correspondence of the critical points of and .
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►This technique can be applied to generate a hierarchy of approximations for the diffraction catastrophes
in (36.2.10) away from , in terms of canonical integrals for .
For example, the diffraction catastrophe
defined by (36.2.10), and corresponding to the Pearcey integral (36.2.14), can be approximated by the Airy function when is large, provided that and are not small.
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►For further information concerning integrals with several coalescing saddle points see Arnol’d et al. (1988), Berry and Howls (1993, 1994), Bleistein (1967), Duistermaat (1974), Ludwig (1966), Olde Daalhuis (2000), and Ursell (1972, 1980).
30: 8 Incomplete Gamma and Related
Functions
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