PowerMod (Built-in Mathematica Symbol)

PowerMod[a, b, m] gives a^b mod m. PowerMod[a, -1, m] finds the modular inverse of a modulo m.PowerMod[a, 1/r, m] finds a modular r\[Null]^th root of a.

RamanujanTauL (Built-in Mathematica Symbol)

RamanujanTauL[s] gives the Ramanujan tau Dirichlet L-function L(s).

Round (Built-in Mathematica Symbol)

Round[x] gives the integer closest to x. Round[x, a] rounds to the nearest multiple of a.

Sinc (Built-in Mathematica Symbol)

Sinc[z] gives sinc(z).

SphericalHarmonicY (Built-in Mathematica Symbol)

SphericalHarmonicY[l, m, \[Theta], \[Phi]] gives the spherical harmonic Y_l^m(\[Theta], \[Phi]).

StirlingS1 (Built-in Mathematica Symbol)

StirlingS1[n, m] gives the Stirling number of the first kind S_n^(m).

StruveH (Built-in Mathematica Symbol)

StruveH[n, z] gives the Struve function H n (z).

StruveL (Built-in Mathematica Symbol)

StruveL[n, z] gives the modified Struve function L n (z).

Subfactorial (Built-in Mathematica Symbol)

Subfactorial[n] gives the number of permutations of n objects that leave no object fixed.

TrigFactor (Built-in Mathematica Symbol)

TrigFactor[expr] factors trigonometric functions in expr.