Weber–Schafheitlin discontinuous integrals
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21: 11.1 Special Notation
§11.1 Special Notation
… ►For the functions , , , , , and see §§10.2(ii), 10.25(ii). ►The functions treated in this chapter are the Struve functions and , the modified Struve functions and , the Lommel functions and , the Anger function , the Weber function , and the associated Anger–Weber function .22: 10.1 Special Notation
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►The main functions treated in this chapter are the Bessel functions , ; Hankel functions , ; modified Bessel functions , ; spherical Bessel functions , , , ; modified spherical Bessel functions , , ; Kelvin functions , , , .
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►A common alternative notation for is .
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►For older notations see British Association for the Advancement of Science (1937, pp. xix–xx) and Watson (1944, Chapters 1–3).
23: 10.24 Functions of Imaginary Order
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►and , are linearly independent solutions of (10.24.1):
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►In consequence of (10.24.6), when is large and comprise a numerically satisfactory pair of solutions of (10.24.1); compare §2.7(iv).
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►For graphs of and see §10.3(iii).
►For mathematical properties and applications of and , including zeros and uniform asymptotic expansions for large , see Dunster (1990a).
In this reference and are denoted respectively by and .
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24: 10.58 Zeros
25: 10.74 Methods of Computation
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►In the interval , needs to be integrated in the forward direction and in the backward direction, with initial values for the former obtained from the power-series expansion (10.2.2) and for the latter from asymptotic expansions (§§10.17(i) and 10.20(i)).
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►Similarly, to maintain stability in the interval the integration direction has to be forwards in the case of and backwards in the case of , with initial values obtained in an analogous manner to those for and .
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§10.74(iii) Integral Representations
… ►If values of the Bessel functions , , or the other functions treated in this chapter, are needed for integer-spaced ranges of values of the order , then a simple and powerful procedure is provided by recurrence relations typified by the first of (10.6.1). … ►Then and can be generated by either forward or backward recurrence on when , but if then to maintain stability has to be generated by backward recurrence on , and has to be generated by forward recurrence on . …26: 10.3 Graphics
27: 10.4 Connection Formulas
28: 12.1 Special Notation
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►Unless otherwise noted, primes indicate derivatives with respect to the variable, and fractional powers take their principal values.
►The main functions treated in this chapter are the parabolic cylinder functions (PCFs), also known as Weber parabolic cylinder functions: , , , and .
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29: 10.9 Integral Representations
§10.9 Integral Representations
… ►Bessel’s Integral
… ►§10.9(ii) Contour Integrals
… ►Hankel’s Integrals
… ► …30: 3.6 Linear Difference Equations
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►is satisfied by and , where and are the Bessel functions of the first kind.
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