JacobiNC[u, m] gives the Jacobi elliptic function nc(u | m).
JacobiND[u, m] gives the Jacobi elliptic function nd(u | m).
JacobiNS[u, m] gives the Jacobi elliptic function ns(u | m).
JacobiSC[u, m] gives the Jacobi elliptic function sc(u | m).
JacobiSD[u, m] gives the Jacobi elliptic function sd(u | m).
JacobiZeta[\[Phi], m] gives the Jacobi zeta function Z(\[Phi] \[VerticalSeparator] m).
Join
(Built-in Mathematica Symbol) Join[list_1, list_2, ...] concatenates lists or other expressions that share the same head.Join[list_1, list_2, ..., n] joins the objects at level n in each of the list_i.
JordanModelDecomposition[ss] yields the Jordan decomposition of a StateSpaceModel object ss. The result is a list {s, jc} where s is a similarity matrix and jc is the Jordan ...
KleinInvariantJ[\[Tau]] gives the Klein invariant modular elliptic function J(\[Tau]).
LandauDistribution[\[Mu], \[Sigma]] represents a Landau distribution with location parameter \[Mu] and scale parameter \[Sigma].