BesselK
(Built-in Mathematica Symbol) BesselK[n, z] gives the modified Bessel function of the second kind K_n (z).
Cross
(Built-in Mathematica Symbol) Cross[a, b] gives the vector cross product of a and b.
DiscreteDelta[n_1, n_2, ...] gives the discrete delta function \[Delta] (n_1, n_2, ...), equal to 1 if all the n_i are zero, and 0 otherwise.
Hypergeometric0F1[a, z] is the confluent hypergeometric function \[Null]_0 F_1 (; a; z).
Interval[{min, max}] represents the range of values between min and max. Interval[{min_1 , max_1}, {min_2 , max_2}, ...] represents the union of the ranges min_1 to max_1, ...
InverseBetaRegularized[s, a, b] gives the inverse of the regularized incomplete beta function.
InverseGammaRegularized[a, s] gives the inverse of the regularized incomplete gamma function.
KelvinBei[z] gives the Kelvin function bei(z).KelvinBei[n, z] gives the Kelvin function bei_n (z).
KelvinBer[z] gives the Kelvin function ber(z).KelvinBer[n, z] gives the Kelvin function ber_n (z).
KelvinKei[z] gives the Kelvin function kei(z).KelvinKei[n, z] gives the Kelvin function kei_n (z).