PermutationList[perm] returns a permutation list representation of permutation perm.PermutationList[perm, len] returns a permutation list of length len.
RandomSample[{e_1, e_2, ...}, n] gives a pseudorandom sample of n of the e_i.RandomSample[{w_1, w_2, ...} -> {e_1, e_2, ...}, n] gives a pseudorandom sample of n of the e_i ...
RiemannSiegelTheta[t] gives the Riemann\[Dash]Siegel function \[CurlyTheta](t).
SinhIntegral[z] gives the hyperbolic sine integral function Shi(z).
Sqrt
(Built-in Mathematica Symbol) Sqrt[z] or Sqrt[z] gives the square root of z.
Tooltip
(Built-in Mathematica Symbol) Tooltip[expr, label] displays label as a tooltip while the mouse pointer is in the area where expr is displayed.
WeierstrassPPrime[u, {g_2, g_3}] gives the derivative of the Weierstrass elliptic function \[WeierstrassP](u; g_2, g_3).
The representation of algebraic numbers. When you enter a Root object, the polynomial that appears in it is automatically reduced to a minimal form. This extracts the pure ...
Functions like Read and Write handle ordinary printable text. But in dealing with external data files or devices it is sometimes necessary to go to a lower level, and work ...
Modules in Mathematica allow you to treat the names of variables as local. Sometimes, however, you want the names to be global, but values to be local. You can do this in ...