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1: 26.12 Plane Partitions

… ►The notation ${\sum }_{\pi \subseteq B(r,s,t)}$ denotes the sum over all plane partitions contained in $B(r,s,t)$, and $|\pi |$ denotes the number of elements in $\pi$. ►

26.12.20 $$\sum _{\pi \subseteq \mathbb{N}\times \mathbb{N}\times \mathbb{N}}{q}^{|\pi |}=\prod _{k=1}^{\mathrm{\infty }}\frac{1}{{(1-q^k)}^k},$$

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Symbols:

$\mathbb{N}$: set of all positive integers, $\subseteq$: is, or is contained in, $k$: nonnegative integer, $\pi$: plane partition and $q$: parameter

Permalink:

http://dlmf.nist.gov/26.12.E20

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See also:

Annotations for §26.12(ii), §26.12 and Ch.26

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26.12.21 $$\sum _{\pi \subseteq B(r,s,t)}{q}^{|\pi |}=\prod _{(h,j,k)\in B(r,s,t)}\frac{1-q^{h+j+k-1}}{1-q^{h+j+k-2}}=\prod _{h=1}^r\prod _{j=1}^s\frac{1-q^{h+j+t-1}}{1-q^{h+j-1}},$$

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Symbols:

$\in$: element of, $\subseteq$: is, or is contained in, $h$: nonnegative integer, $j$: nonnegative integer, $k$: nonnegative integer, $\pi$: plane partition, $r$: positive integer, $s$: positive integer, $t$: positive integer, $B(r,s,t)$: Box and $q$: parameter

Permalink:

http://dlmf.nist.gov/26.12.E21

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Annotations for §26.12(ii), §26.12 and Ch.26

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26.12.25 $$\mathrm{pp}\left(n\right)=\frac{1}{n}\sum _{j=1}^n\mathrm{pp}\left(n-j\right){\sigma }_2(j),$$

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Symbols:

$\mathrm{pp}\left(n\right)$: number of plane partitions of $n$ , $j$: nonnegative integer and $n$: nonnegative integer

Permalink:

http://dlmf.nist.gov/26.12.E25

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See also:

Annotations for §26.12(iii), §26.12 and Ch.26

►where ${\sigma }_2(j)$ is the sum of the squares of the divisors of $j$. …

2: Bibliography M

… ►

Rational approximations, software and test methods for sine and cosine integrals. Numer. Algorithms 12 (3-4), pp. 259–272.

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Notes:

Includes Fortran code, maximum accuracy 20S.

External Links:

ISSN 1017-1398, Document, MathReview, ZentralBlatt

Referenced by:

§6.13, 4th item, §6.21(ii).

Encodings:

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Infinite families of exact sums of squares formulas, Jacobi elliptic functions, continued fractions, and Schur functions. Ramanujan J. 6 (1), pp. 7–149.

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External Links:

Document, ZentralBlatt

Referenced by:

§27.13(iv).

Encodings:

BibTeX

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New infinite families of exact sums of squares formulas, Jacobi elliptic functions, and Ramanujan’s tau function. Proc. Nat. Acad. Sci. U.S.A. 93 (26), pp. 15004–15008.

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External Links:

ISSN 0027-8424, MathReview (Ken Ono), ZentralBlatt

Referenced by:

§27.13(iv).

Encodings:

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The $q$-analogue of the Laguerre polynomials. J. Math. Anal. Appl. 81 (1), pp. 20–47.

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External Links:

ISSN 0022-247X, Document, MathReview (R. A. Askey), ZentralBlatt

Referenced by:

§18.27(v).

Encodings:

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On the representation of numbers as a sum of $2r$ squares. Quarterly Journal of Math. 48, pp. 93–104.

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External Links:

ZentralBlatt

Referenced by:

§27.13(iv).

Encodings:

BibTeX

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3: 19.36 Methods of Computation

… ►When the differences are moderately small, the iteration is stopped, the elementary symmetric functions of certain differences are calculated, and a polynomial consisting of a fixed number of terms of the sum in (19.19.7) is evaluated. … ►

19.36.2 $$1-\frac{3}{14}{E}_2+\frac{1}{6}{E}_3+\frac{9}{88}{E}_2^2-\frac{3}{22}{E}_4-\frac{9}{52}{E}_2{E}_3+\frac{3}{26}{E}_5-\frac{1}{16}{E}_2^3+\frac{3}{40}{E}_3^2+\frac{3}{20}{E}_2{E}_4+\frac{45}{272}{E}_2^2{E}_3-\frac{9}{68}(E_3{E}_4+E_2{E}_5).$$

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Symbols:

$E_s(𝐳)$: symmetric function

Referenced by:

§19.19

Permalink:

http://dlmf.nist.gov/19.36.E2

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See also:

Annotations for §19.36(i), §19.36 and Ch.19

… ►The reductions in §19.29(i) represent $x,y,z$ as squares, for example $x=U_{12}^2$ in (19.29.4). … ►

19.36.13 $$2R_G(t_0^2,t_0^2+\theta c_0^2,t_0^2+\theta a_0^2)=\left(t_0^2+\theta \sum _{m=0}^{\mathrm{\infty }}{2}^{m-1}{c}_m^2\right)R_C(T^2+\theta M^2,T^2)+h_0+\sum _{m=1}^{\mathrm{\infty }}{2}^m(h_m-h_{m-1}).$$

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Symbols:

$R_C(x,y)$: Carlson’s combination of inverse circular and inverse hyperbolic functions, $R_G(x,y,z)$: symmetric elliptic integral of second kind, $m$: nonnegative integer, $M$: limit, $T$: limit and $h_n$

Permalink:

http://dlmf.nist.gov/19.36.E13

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See also:

Annotations for §19.36(ii), §19.36(ii), §19.36 and Ch.19

… ►For computation of Legendre’s integral of the third kind, see Abramowitz and Stegun (1964, §§17.7 and 17.8, Examples 15, 17, 19, and 20). …

4: 1.11 Zeros of Polynomials

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… ►The sum and product of the roots are respectively $-b/a$ and $c/a$. … ►The square roots are chosen so that … ►Resolvent cubic is $z^3+12z^2+20z+9=0$ with roots ${\theta }_1=-1$, ${\theta }_2=-\frac{1}{2}(11+\sqrt{85})$, ${\theta }_3=-\frac{1}{2}(11-\sqrt{85})$, and $\sqrt{-{\theta }_1}=1$, $\sqrt{-{\theta }_2}=\frac{1}{2}(\sqrt{17}+\sqrt{5})$, $\sqrt{-{\theta }_3}=\frac{1}{2}(\sqrt{17}-\sqrt{5})$. …

5: 18.39 Applications in the Physical Sciences

… ►Below we consider two potentials with analytically known eigenfunctions and eigenvalues where the spectrum is entirely point, or discrete, with all eigenfunctions being $L^2$ and forming a complete set. … ►where ${\mathrm{L}}^2$ is the (squared) angular momentum operator (14.30.12). … ►with an infinite set of orthonormal $L^2$ eigenfunctions … ►The bound state $L^2$ eigenfunctions of the radial Coulomb Schrödinger operator are discussed in §§18.39(i) and 18.39(ii), and the $\delta$-function normalized (non-$L^2$) in Chapter 33, where the solutions appear as Whittaker functions. … ►The fact that non-$L^2$ continuum scattering eigenstates may be expressed in terms or (infinite) sums of $L^2$ functions allows a reformulation of scattering theory in atomic physics wherein no non-$L^2$ functions need appear. …

6: Bibliography K

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Algorithm 737: INTLIB: A portable Fortran 77 interval standard-function library. ACM Trans. Math. Software 20 (4), pp. 447–459.

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External Links:

ISSN 0098-3500, Document, GAMS (module 737; package TOMS), ZentralBlatt

Referenced by:

1st item.

Encodings:

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Methods of computing the Riemann zeta-function and some generalizations of it. USSR Comput. Math. and Math. Phys. 20 (6), pp. 212–230.

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External Links:

Document, MathReview (Matti Jutila), ZentralBlatt

Referenced by:

§25.18(i).

Encodings:

BibTeX

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Tables of the Incomplete Gamma Function Ratio: The Chi-square Integral, the Poisson Distribution. Justus von Liebig Verlag, Darmstadt (German, English).

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Notes:

In cooperation with W. Rudert

External Links:

MathReview, ZentralBlatt

Referenced by:

1st item.

Encodings:

BibTeX

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Connection formulae for asymptotics of solutions of the degenerate third Painlevé equation. I. Inverse Problems 20 (4), pp. 1165–1206.

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External Links:

ISSN 0266-5611, Document, MathReview (Shun Shimomura), ZentralBlatt

Referenced by:

§32.11(iv).

Encodings:

BibTeX

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HYP and HYPQ. Mathematica packages for the manipulation of binomial sums and hypergeometric series respectively $q$-binomial sums and basic hypergeometric series. Séminaire Lotharingien de Combinatoire 30, pp. 61–76.

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Notes:

Also published in J. Symbolic Comput. (1995), v. 20, no. 5–6, pp. 737–744.

External Links:

Code, Document, MathReview (G. Gasper), ZentralBlatt

Referenced by:

1st item.

Encodings:

BibTeX

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