OpenRead (Built-in Mathematica Symbol)

OpenRead["file"] opens a file to read data from, and returns an InputStream object.

PermutationCyclesQ (Built-in Mathematica Symbol)

PermutationCyclesQ[expr] returns True if expr is a permutation in disjoint cyclic form, and False otherwise.

Prepend (Built-in Mathematica Symbol)

Prepend[expr, elem] gives expr with elem prepended.

PrimitiveRoot (Built-in Mathematica Symbol)

PrimitiveRoot[n] gives the smallest primitive root of n.

Protect (Built-in Mathematica Symbol)

Protect[s_1, s_2, ...] sets the attribute Protected for the symbols s_i. Protect["form_1", "form_2", ...] protects all symbols whose names match any of the string patterns ...

Put (Built-in Mathematica Symbol)

expr >> filename writes expr to a file. Put[expr_1, expr_2, ..., " filename"] writes a sequence of expressions expr_i to a file. Put["filename "] creates an empty file with ...

RadicalBox (Built-in Mathematica Symbol)

RadicalBox[x, n] is a low-level box construct that represents the displayed object Power[x, (n)^-1] in notebook expressions.

Rationals (Built-in Mathematica Symbol)

Rationals represents the domain of rational numbers, as in x \[Element] Rationals.

ResetScheduledTask (Built-in Mathematica Symbol)

ResetScheduledTask[obj] resets scheduled task object obj to the original parameter values.ResetScheduledTask[obj, timespec] resets scheduled task timing to ...

RotateLeft (Built-in Mathematica Symbol)

RotateLeft[expr, n] cycles the elements in expr n positions to the left. RotateLeft[expr] cycles one position to the left. RotateLeft[expr, {n_1, n_2, ...}] cycles elements ...