GoldenRatio (Built-in Mathematica Symbol)

GoldenRatio is the golden ratio \[Phi] = 1/2 (Sqrt[5] + 1), with numerical value \[TildeEqual] 1.61803.

MoebiusMu (Built-in Mathematica Symbol)

MoebiusMu[n] gives the Möbius function \[Mu](n).

ApacheLog (Mathematica Import/Export Format)

Apache log files. Native log file format of the Apache web server. Common variants are Apache Common Log and Apache Access Log. Is used by MathLM, the Mathematica license ...

Complement (Built-in Mathematica Symbol)

Complement[e_all, e_1, e_2, ...] gives the elements in e_all which are not in any of the e_i.

IntegerQ (Built-in Mathematica Symbol)

IntegerQ[expr] gives True if expr is an integer, and False otherwise.

Intersection (Built-in Mathematica Symbol)

Intersection[list_1, list_2, ...] gives a sorted list of the elements common to all the list_i.

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 ...

StringLength (Built-in Mathematica Symbol)

StringLength["string"] gives the number of characters in a string.

Through (Built-in Mathematica Symbol)

Through[p[f_1, f_2][x]] gives p[f_1[x], f_2[x]]. Through[expr, h] performs the transformation wherever h occurs in the head of expr.

BitOr (Built-in Mathematica Symbol)

BitOr[n_1, n_2, ...] gives the bitwise OR of the integers n_i.