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21: 3.11 Approximation Techniques

… ►Beginning with

u_{n+1}=0

u_{n}=c_{n}

, we apply … ►With

b_{0}=1

, the last

q

equations give

b_{1},\dots,b_{q}

as the solution of a system of linear equations. … ►(3.11.29) is a system of

n+1

linear equations for the coefficients

a_{0},a_{1},\dots,a_{n}

. … ►With this choice of

a_{k}

and

f_{j}=f(x_{j})

, the corresponding sum (3.11.32) vanishes. … ►Two are endpoints:

(x_{0},y_{0})

and

(x_{3},y_{3})

; the other points

(x_{1},y_{1})

and

(x_{2},y_{2})

are control points. …

$g, h$	positive integers.
…
$a_{j}$	$j$ th element of vector $\mathbf{a}$ .
…
$\operatorname{diag}\mathbf{A}$	Transpose of $[A_{11},A_{22},\dots,A_{gg}]$ .
…
$\mathbf{J}_{2g}$	$\begin{bmatrix}\boldsymbol{{0}}_{g}&\mathbf{I}_{g}\\ -\mathbf{I}_{g}&\boldsymbol{{0}}_{g}\end{bmatrix}$ .
…
$S_{1}S_{2}$	set of all elements of the form “ $\mbox{element of $S_{1}$}\times\mbox{element of $S_{2}$}$ ”.
$S_{1}/S_{2}$	set of all elements of $S_{1}$ , modulo elements of $S_{2}$ . Thus two elements of $S_{1}/S_{2}$ are equivalent if they are both in $S_{1}$ and their difference is in $S_{2}$ . (For an example see §20.12(ii).)
…

23: Bibliography K

… ►

M. K. Kerimov and S. L. Skorokhodov (1984c) Evaluation of complex zeros of Bessel functions

J_{\nu}(z)

and

I_{\nu}(z)

and their derivatives. Zh. Vychisl. Mat. i Mat. Fiz. 24 (10), pp. 1497–1513.

ⓘ

Notes:: English translation in U.S.S.R. Computational Math. and Math. Phys. 24(5), pp. 131–141
External Links:: ISSN 0044-4669, Document, MathReview (Walter Gautschi), ZentralBlatt
Referenced by:: §10.21(ix), §10.74(vi), 4th item.
Encodings:: BibTeX

… ►

S. K. Kim (1972) The asymptotic expansion of a hypergeometric function

{}_{2}F_{2}(1,\,\alpha;\,\rho_{1},\,\rho_{2};\,z)

. Math. Comp. 26 (120), pp. 963.

ⓘ

External Links:: FullText, MathReview, ZentralBlatt
Referenced by:: §16.11(ii), §16.11(ii).
Encodings:: BibTeX

… ►

Y. S. Kim, A. K. Rathie, and R. B. Paris (2013) An extension of Saalschütz’s summation theorem for the series

{}_{r+3}F_{r+2}

. Integral Transforms Spec. Funct. 24 (11), pp. 916–921.

ⓘ

External Links:: ISSN 1065-2469, Document, FullText, MathReview (Christian Lavault), ZentralBlatt
Referenced by:: §16.4(ii), §16.4(ii).
Encodings:: BibTeX

… ►

C. G. Kokologiannaki, P. D. Siafarikas, and C. B. Kouris (1992) On the complex zeros of

H_{\mu}(z),\ J^{\prime}_{\mu}(z),\ J^{\prime\prime}_{\mu}(z)

for real or complex order. J. Comput. Appl. Math. 40 (3), pp. 337–344.

ⓘ

External Links:: ISSN 0377-0427, Document, MathReview, ZentralBlatt
Referenced by:: §10.21(ix).
Encodings:: BibTeX

… ►

E. D. Krupnikov and K. S. Kölbig (1997) Some special cases of the generalized hypergeometric function

{}_{q+1}F_{q}

. J. Comput. Appl. Math. 78 (1), pp. 79–95.

ⓘ

External Links:: ISSN 0377-0427, Document, MathReview (Boro Döring), ZentralBlatt
Referenced by:: §16.7.
Encodings:: BibTeX

…

24: 19.29 Reduction of General Elliptic Integrals

… ►Let …where … ►Next, for

j=1,2

, define

Q_{j}(t)=f_{j}+g_{j}t+h_{j}t^{2}

, and assume both

Q

’s are positive for

y<t<x

. …where …If

Q_{1}(t)=(a_{1}+b_{1}t)(a_{2}+b_{2}t)

, where both linear factors are positive for

y<t<x

, and

Q_{2}(t)=f_{2}+g_{2}t+h_{2}t^{2}

, then (19.29.25) is modified so that …

25: 4.17 Special Values and Limits

… ►

Table 4.17.1: Trigonometric functions: values at multiples of

\frac{1}{12}\pi

► ►►►

$\theta$	$\sin\theta$	$\cos\theta$	$\tan\theta$	$\csc\theta$	$\sec\theta$	$\cot\theta$
…
$11\pi/12$	$\frac{1}{4}\sqrt{2}(\sqrt{3}-1)$	$-\frac{1}{4}\sqrt{2}(\sqrt{3}+1)$	$-(2-\sqrt{3})$	$\sqrt{2}(\sqrt{3}+1)$	$-\sqrt{2}(\sqrt{3}-1)$	$-(2+\sqrt{3})$
…

► ►

4.17.1

\lim_{z\to 0}\frac{\sin z}{z}=1,

ⓘ

Symbols:: $\sin\NVar{z}$ : sine function and $z$ : complex variable
A&S Ref:: 4.3.74
Permalink:: http://dlmf.nist.gov/4.17.E1
Encodings:: pMML, png, TeX
See also:: Annotations for §4.17 and Ch.4

►

4.17.2

\lim_{z\to 0}\frac{\tan z}{z}=1.

ⓘ

Symbols:: $\tan\NVar{z}$ : tangent function and $z$ : complex variable
A&S Ref:: 4.3.75
Permalink:: http://dlmf.nist.gov/4.17.E2
Encodings:: pMML, png, TeX
See also:: Annotations for §4.17 and Ch.4

►

4.17.3

\lim_{z\to 0}\frac{1-\cos z}{z^{2}}=\frac{1}{2}.

ⓘ

Symbols:: $\cos\NVar{z}$ : cosine function and $z$ : complex variable
Permalink:: http://dlmf.nist.gov/4.17.E3
Encodings:: pMML, png, TeX
See also:: Annotations for §4.17 and Ch.4

26: Bibliography E

… ►

C. Eckart (1930) The penetration of a potential barrier by electrons. Phys. Rev. 35 (11), pp. 1303–1309.

ⓘ

External Links:: Document, ZentralBlatt
Referenced by:: §15.18.
Encodings:: BibTeX

… ►

F. H. L. Essler, H. Frahm, A. R. Its, and V. E. Korepin (1996) Painlevé transcendent describes quantum correlation function of the

X X Z

antiferromagnet away from the free-fermion point. J. Phys. A 29 (17), pp. 5619–5626.

ⓘ

External Links:: ISSN 0305-4470, Document, MathReview (Estelle L. Basor), ZentralBlatt
Referenced by:: §32.16.
Encodings:: BibTeX

… ►

L. Euler (1768) Institutiones Calculi Integralis. Opera Omnia (1), Vol. 11, pp. 110–113.

ⓘ

Referenced by:: §25.12(i).
Encodings:: BibTeX

… ►

W. N. Everitt, L. L. Littlejohn, and R. Wellman (2004) The Sobolev orthogonality and spectral analysis of the Laguerre polynomials

\{L^{-k}_{n}\}

for positive integers

k

. J. Comput. Appl. Math. 171 (1-2), pp. 199–234.

ⓘ

External Links:: ISSN 0377-0427, Document, Link, MathReview (Khélifa Trimèche)
Referenced by:: §18.36(v).
Encodings:: BibTeX

… ►

W. N. Everitt (2008) Note on the

X_{1}

-Laguerre orthogonal polynomials.

ⓘ

Notes:: arXiv:0811.3559v2
Referenced by:: §18.36(vi).
Encodings:: BibTeX

…

27: 24.19 Methods of Computation

… ►Equations (24.5.3) and (24.5.4) enable

B_{n}

and

E_{n}

to be computed by recurrence. …For example, the tangent numbers

T_{n}

can be generated by simple recurrence relations obtained from (24.15.3), then (24.15.4) is applied. … ►For other information see Chellali (1988) and Zhang and Jin (1996, pp. 1–11). For algorithms for computing

B_{n}

E_{n}

B_{n}\left(x\right)

, and

E_{n}\left(x\right)

see Spanier and Oldham (1987, pp. 37, 41, 171, and 179–180). ►

§24.19(ii) Values of $B_{n}$ Modulo $p$

…

28: 26.10 Integer Partitions: Other Restrictions

… ►

p_{m}\left(\mathcal{D},n\right)

denotes the number of partitions of

n

into at most

m

distinct parts. …The set

\{n\geq 1\>|\>n\equiv\pm j\ \pmod{k}\}

is denoted by

A_{j,k}

. … ►It is known that for

k>3

p\left(\mathcal{D}k,n\right)\geq p\left(\in\!A_{1,k+3},n\right)

, with strict inequality for

n

sufficiently large, provided that

k=2^{m}-1,m=3,4,5

, or

k\geq 32

; see Yee (2004). … ►where

I_{1}\left(x\right)

is the modified Bessel function (§10.25(ii)), and …The quantity

A_{k}(n)

is real-valued. …

29: Bibliography O

… ►

K. Okamoto (1986) Studies on the Painlevé equations. III. Second and fourth Painlevé equations,

P_{{\rm II}}

and

P_{\mathrm{IV}}

. Math. Ann. 275 (2), pp. 221–255.

ⓘ

External Links:: ISSN 0025-5831, Document, MathReview (Hélène Airault), ZentralBlatt
Referenced by:: §32.10(ii), §32.10(iv), §32.6(iii), §32.6(v), §32.7(viii).
Encodings:: BibTeX

►

K. Okamoto (1987a) Studies on the Painlevé equations. I. Sixth Painlevé equation

P_{{\rm VI}}

. Ann. Mat. Pura Appl. (4) 146, pp. 337–381.

ⓘ

External Links:: ISSN 0003-4622, Document, MathReview (Hélène Airault), ZentralBlatt
Referenced by:: §32.10(vi), §32.6(v), §32.7(vii), §32.7(viii).
Encodings:: BibTeX

►

K. Okamoto (1987b) Studies on the Painlevé equations. II. Fifth Painlevé equation

P_{\rm V}

. Japan. J. Math. (N.S.) 13 (1), pp. 47–76.

ⓘ

External Links:: ISSN 0289-2316, MathReview (Hélène Airault), ZentralBlatt
Referenced by:: §32.10(v), §32.6(v), §32.7(viii).
Encodings:: BibTeX

►

K. Okamoto (1987c) Studies on the Painlevé equations. IV. Third Painlevé equation

P_{{\rm III}}

. Funkcial. Ekvac. 30 (2-3), pp. 305–332.

ⓘ

External Links:: ISSN 0532-8721, FullText, MathReview (Hélène Airault), ZentralBlatt
Referenced by:: §32.10(iii), §32.2(iii), §32.6(iv), §32.7(viii).
Encodings:: BibTeX

… ►

S. Olver (2011) Numerical solution of Riemann-Hilbert problems: Painlevé II. Found. Comput. Math. 11 (2), pp. 153–179.

ⓘ

External Links:: ISSN 1615-3375, Document, FullText, MathReview Entry, ZentralBlatt
Referenced by:: §32.17, §32.17.
Encodings:: BibTeX

…

30: 3.9 Acceleration of Convergence

… ►A transformation of a convergent sequence

\{s_{n}\}

with limit

\sigma

into a sequence

\{t_{n}\}

is called limit-preserving if

\{t_{n}\}

converges to the same limit

\sigma

. … ►This transformation is accelerating if

\{s_{n}\}

is a linearly convergent sequence, i. … ►Then the transformation of the sequence

\{s_{n}\}

into a sequence

\{t_{n,2k}\}

is given by … ►Then

t_{n,2k}=\varepsilon_{2k}^{(n)}

. … ►We give a special form of Levin’s transformation in which the sequence

s=\{s_{n}\}

of partial sums

s_{n}=\sum_{j=0}^{n}a_{j}

is transformed into: …