Dunster’s
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1: 28.8 Asymptotic Expansions for Large
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Dunster’s Approximations
►Dunster (1994a) supplies uniform asymptotic approximations for numerically satisfactory pairs of solutions of Mathieu’s equation (28.2.1). … ►2: Bibliography D
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On the high-order coefficients in the uniform asymptotic expansion for the incomplete gamma function.
Methods Appl. Anal. 5 (3), pp. 223–247.
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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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Bessel functions of purely imaginary order, with an application to second-order linear differential equations having a large parameter.
SIAM J. Math. Anal. 21 (4), pp. 995–1018.
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Olver’s error bound methods applied to linear ordinary differential equations having a simple turning point.
Anal. Appl. (Singap.) 12 (4), pp. 385–402.
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3: 8.22 Mathematical Applications
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►For further information on , including zeros and uniform asymptotic approximations, see Kölbig (1970, 1972a) and Dunster (2006).
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4: 10.49 Explicit Formulas
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►See also §18.34, de Bruin et al. (1981a, b), and Dunster (2001c).
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§10.49(iii) Rayleigh’s Formulas
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10.49.17
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10.49.18
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10.49.20
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5: Staff
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Howard S. Cohl, Technical Editor, NIST
T. Mark Dunster, San Diego State University, Chap. 14
Roderick S. C. Wong, City University of Hong Kong, Chaps. 1, 2, 18
T. Mark Dunster, San Diego State University, for Chap. 14
Roderick S. C. Wong, City University of Hong Kong, for Chaps. 2, 18
6: Preface
7: 2.8 Differential Equations with a Parameter
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►For another approach to these problems based on convergent inverse factorial series expansions see Dunster et al. (1993) and Dunster (2001a, 2004).
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►For error bounds, more delicate error estimates, extensions to complex , , and , zeros, and examples see Olver (1997b, Chapter 12), Boyd (1990a), and Dunster (1990a).
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►For two coalescing turning points see Olver (1975a, 1976) and Dunster (1996a); in this case the uniform approximants are parabolic cylinder functions.
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►For a coalescing turning point and double pole see Boyd and Dunster (1986) and Dunster (1990b); in this case the uniform approximants are Bessel functions of variable order.
►For a coalescing turning point and simple pole see Nestor (1984) and Dunster (1994b); in this case the uniform approximants are Whittaker functions (§13.14(i)) with a fixed value of the second parameter.
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8: 2.11 Remainder Terms; Stokes Phenomenon
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►with
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►Application of Watson’s lemma (§2.4(i)) yields
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►See also Paris and Kaminski (2001, Chapter 6), and Dunster (1996b, 1997).
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►For error bounds see Dunster (1996c).
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9: 18.15 Asymptotic Approximations
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18.15.1
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18.15.3
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►For large , fixed , and , Dunster (1999) gives asymptotic expansions of that are uniform in unbounded complex -domains containing .
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►The asymptotic behavior of the classical OP’s as with the degree and parameters fixed is evident from their explicit polynomial forms; see, for example, (18.2.7) and the last two columns of Table 18.3.1.
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►See also Dunster (1999), Atia et al. (2014) and Temme (2015, Chapter 32).
10: 14.15 Uniform Asymptotic Approximations
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14.15.3
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►For asymptotic expansions and explicit error bounds, see Dunster (2003b) and Gil et al. (2000).
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►For asymptotic expansions and explicit error bounds, see Dunster (2003b).
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►For convergent series expansions see Dunster (2004).
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►For asymptotic expansions and explicit error bounds, see Boyd and Dunster (1986).
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