Abs
(Built-in Mathematica Symbol) Abs[z] gives the absolute value of the real or complex number z.
Flatten
(Built-in Mathematica Symbol) Flatten[list] flattens out nested lists. Flatten[list, n] flattens to level n. Flatten[list, n, h] flattens subexpressions with head h. Flatten[list, {{s_11, s_12, ...}, ...
Panel
(Built-in Mathematica Symbol) Panel[expr] displays as a panel containing expr. Panel[expr, title] gives the panel the specified title. Panel[expr, title, pos] places title at a position specified by pos. ...
EllipticE[m] gives the complete elliptic integral E(m). EllipticE[\[Phi], m] gives the elliptic integral of the second kind E(\[Phi] \[VerticalSeparator] m).
AiryAi
(Built-in Mathematica Symbol) AiryAi[z] gives the Airy function Ai(z).
AiryAiPrime[z] gives the derivative of the Airy function Ai^\[Prime] (z).
ArcCos
(Built-in Mathematica Symbol) ArcCos[z] gives the arc cosine cos -1 (z) of the complex number z.
ArcSin
(Built-in Mathematica Symbol) ArcSin[z] gives the arc sine sin -1 (z) of the complex number z.
Coth
(Built-in Mathematica Symbol) Coth[z] gives the hyperbolic cotangent of z.
A possible way of working with permutations is by relating them to the reorderings of the elements of a list. This is the standard point of view in the combinatorial approach ...