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

Basic plotting functions. This plots a graph of sin(x) as a function of x from 0 to 2π. You can plot functions that have singularities. Mathematica will try to choose ...

Using Previous Results Defining Variables Values for Symbols

"How to" Topics Files, Streams, and External Operations Importing and Exporting

Everything Is an Expression The Meaning of Expressions Special Ways to Input Expressions

The Main Loop Dialogs Date and Time Functions

Constructing Lists Manipulating Lists by Their Indices Nested Lists

You can use the keyboard to move the cursor forward or backward one character or one word at a time. You can also delete the character or word to the right or the left of the ...

Notebook Interfaces Doing Computations in Notebooks Notebooks as Documents

Why You Do Not Usually Need to Know about Internals Basic Internal Architecture The Algorithms of Mathematica