SpheroidalPS[n, m, \[Gamma], z] gives the angular spheroidal function PS n, m (\[Gamma], z) of the first kind.
BarnesG
(Built-in Mathematica Symbol) BarnesG[z] gives the Barnes G-function G(z).
BesselJZero[n, k] represents the k\[Null]^th zero of the Bessel function J_n (x).BesselJZero[n, k, x_0] represents the k\[Null]^th zero greater than x_0.
DedekindEta[\[Tau]] gives the Dedekind eta modular elliptic function \[Eta](\[Tau]).
EllipticNomeQ[m] gives the nome q corresponding to the parameter m in an elliptic function.
InverseHaversine[z] gives the inverse haversine function hav -1 (z).
Log2
(Built-in Mathematica Symbol) Log2[x] gives the base-2 logarithm of x.
RamanujanTauL[s] gives the Ramanujan tau Dirichlet L-function L(s).
Sinc
(Built-in Mathematica Symbol) Sinc[z] gives sinc(z).
SphericalHarmonicY[l, m, \[Theta], \[Phi]] gives the spherical harmonic Y_l^m(\[Theta], \[Phi]).