HeavisideTheta[x] represents the Heaviside theta function \[Theta](x), equal to 0 for x < 0 and 1 for x > 0. HeavisideTheta[x_1, x_2, ...] represents the multidimensional ...
EllipticTheta[a, u, q] gives the theta function \[CurlyTheta]_a (u, q) (a = 1, ..., 4).
Scan
(Built-in Mathematica Symbol) Scan[f, expr] evaluates f applied to each element of expr in turn. Scan[f, expr, levelspec] applies f to parts of expr specified by levelspec.
JacobiSN[u, m] gives the Jacobi elliptic function sn(u | m).
Composition[f_1, f_2, f_3, ...] represents a composition of the functions f_1, f_2, f_3, ....
FresnelS[z] gives the Fresnel integral S(z).
ChebyshevU[n, x] gives the Chebyshev polynomial of the second kind U_n (x).
FresnelC[z] gives the Fresnel integral C(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.
The default behavior for a function in Mathematica is carefully chosen to be suitable for the vast majority of cases. Mathematica also gives you fine-grained control over the ...