赞恩州立学院国际商务文凭证书〖办证V信ATV1819〗psiup
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1: 5.15 Polygamma Functions
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►The functions , , are called the polygamma functions.
In particular, is the trigamma function; , , are the tetra-, penta-, and hexagamma functions respectively.
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5.15.5
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5.15.7
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►For continued fractions for and see Cuyt et al. (2008, pp. 231–238).
2: 5.16 Sums
3: 4.12 Generalized Logarithms and Exponentials
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►Its inverse is called a generalized logarithm.
It, too, is strictly increasing when , and
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4.12.3
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4.12.4
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►Both and are continuously differentiable.
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4: 36.10 Differential Equations
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§36.10(i) Equations for
►In terms of the normal form (36.2.1) the satisfy the operator equation … ►
36.10.3
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36.10.4
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►In terms of the normal forms (36.2.2) and (36.2.3), the satisfy the following operator equations
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5: 36.3 Visualizations of Canonical Integrals
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►In Figure 36.3.13(a) points of confluence of phase contours are zeros of ; similarly for other contour plots in this subsection.
In Figure 36.3.13(b) points of confluence of all colors are zeros of ; similarly for other density plots in this subsection.
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6: 5.1 Special Notation
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►The main functions treated in this chapter are the gamma function , the psi function (or digamma function) , the beta function , and the -gamma function .
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►Alternative notations for the psi function are: (Gauss) Jahnke and Emde (1945);
Davis (1933);
Pairman (1919).
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7: 5.24 Software
8: 19.11 Addition Theorems
9: 5.22 Tables
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►Abramowitz and Stegun (1964, Chapter 6) tabulates , , , and for to 10D; and for to 10D; , , , , , , , and for to 8–11S; for to 20S.
Zhang and Jin (1996, pp. 67–69 and 72) tabulates , , , , , , , and for to 8D or 8S; for to 51S.
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►This reference also includes for the same arguments to 5D.
Zhang and Jin (1996, pp. 70, 71, and 73) tabulates the real and imaginary parts of , , and for , to 8S.
10: 36.1 Special Notation
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►The main functions covered in this chapter are cuspoid catastrophes ; umbilic catastrophes with codimension three , ; canonical integrals , , ; diffraction catastrophes , , generated by the catastrophes.
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