Depth
(Built-in Mathematica Symbol) Depth[expr] gives the maximum number of indices needed to specify any part of expr, plus 1.
EllipticNomeQ[m] gives the nome q corresponding to the parameter m in an elliptic function.
HankelH1[n, z] gives the Hankel function of the first kind H_n^(1)(z).
HankelH2[n, z] gives the Hankel function of the second kind H_n^(2)(z).
Hypergeometric0F1[a, z] is the confluent hypergeometric function \[Null]_0 F_1 (; a; z).
Hypergeometric2F1Regularized[a, b, c, z] is the regularized hypergeometric function \[Null]_2 F_1 (a, b; c; z)/\[CapitalGamma](c).
InverseBetaRegularized[s, a, b] gives the inverse of the regularized incomplete beta function.
InverseErfc[s] gives the inverse complementary error function obtained as the solution for z in s = erfc(z).
InverseGammaRegularized[a, s] gives the inverse of the regularized incomplete gamma function.
InverseJacobiDC[v, m] gives the inverse Jacobi elliptic function dc -1 (v \[VerticalSeparator] m).