general case
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41: 18.17 Integrals
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►Formulas (18.17.9), (18.17.10) and (18.17.11) are fractional generalizations of -th derivative formulas which are, after substitution of (18.5.7), special cases of (15.5.4), (15.5.5) and (15.5.3), respectively.
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►Formulas (18.17.14) and (18.17.15) are fractional generalizations of -th derivative formulas which are, after substitution of (13.6.19), special cases of (13.3.18) and (13.3.20), respectively.
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42: 1.4 Calculus of One Variable
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►Stieltjes integrability for with respect to can be defined similarly as Riemann integrability in the case that is differentiable with respect to ; a generalization follows below.
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43: 3.1 Arithmetics and Error Measures
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►Also in this arithmetic generalized precision can be defined, which includes absolute error and relative precision (§3.1(v)) as special cases.
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44: 2.3 Integrals of a Real Variable
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►Since need not be continuous (as long as the integral converges), the case of a finite integration range is included.
For an extension with more general
-powers see Bleistein and Handelsman (1975, §4.1).
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►In general
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►Watson’s lemma can be regarded as a special case of this result.
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►For the more general integral (2.3.19) we assume, without loss of generality, that the stationary point (if any) is at the left endpoint.
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45: 18.32 OP’s with Respect to Freud Weights
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►Of special interest are the cases
, , and the case
(), see §32.15.
…For a uniform asymptotic expansion in terms of Airy functions (§9.2) for the OP’s in the case
see Bo and Wong (1999).
►For asymptotic approximations to OP’s that correspond to Freud weights with more general functions see Deift et al. (1999a, b), Bleher and Its (1999), and Kriecherbauer and McLaughlin (1999).
►Generalized Freud weights have the form
…The special case
is of particular interest, see Clarkson and Jordaan (2018).
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46: 18.23 Hahn Class: Generating Functions
47: 23.23 Tables
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►2 in Abramowitz and Stegun (1964) gives values of , , and to 7 or 8D in the rectangular and rhombic cases, normalized so that and (rectangular case), or and (rhombic case), for = 1.
…05, and in the case of the user may deduce values for complex by application of the addition theorem (23.10.1).
►Abramowitz and Stegun (1964) also includes other tables to assist the computation of the Weierstrass functions, for example, the generators as functions of the lattice invariants and .
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48: 3.11 Approximation Techniques
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►Then (in general) a better approximation to is given by
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►For general intervals we rescale:
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►The in (3.11.11) can be calculated from (3.11.10), but in general it is more efficient to make use of the orthogonal property (3.11.9).
Also, in cases where satisfies a linear ordinary differential equation with polynomial coefficients, the expansion (3.11.11) can be substituted in the differential equation to yield a recurrence relation satisfied by the .
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►The theory of polynomial minimax approximation given in §3.11(i) can be extended to the case when is replaced by a rational function .
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49: 10.16 Relations to Other Functions
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►For these and general results when is half an odd integer see §§10.47(ii) and 10.49(i).
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►In all cases principal branches correspond at least when .
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Generalized Hypergeometric Functions
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10.16.9
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