I (Built-in Mathematica Symbol)

I represents the imaginary unit Sqrt[-1].

GraphDistance (Graph Utilities Package Symbol)

GraphDistance[g, i, j] gives the distance from vertex i to vertex j in the graph g.

Work with Statistical Distributions (Mathematica How To)

Statistical distributions have applications in many fields, including the biological, social, and physical sciences. Mathematica represents statistical distributions as ...

Abs (Built-in Mathematica Symbol)

Abs[z] gives the absolute value of the real or complex number z.

NestWhileList (Built-in Mathematica Symbol)

NestWhileList[f, expr, test] generates a list of the results of applying f repeatedly, starting with expr, and continuing until applying test to the result no longer yields ...

Norms in NDSolve (Mathematica Tutorial)

NDSolve uses norms of error estimates to determine when solutions satisfy error tolerances. In nearly all cases the norm has been weighted, or scaled, such that it is less ...

Structural Operations (Mathematica Tutorial)

Mathematica contains some powerful primitives for making structural changes to expressions. You can use these primitives both to implement mathematical properties such as ...

Solve an Equation (Mathematica How To)

Mathematica has many powerful features which enable you to solve many kinds of equations.

EventHandler (Built-in Mathematica Symbol)

EventHandler[expr, {"event_1" :> action_1, "event_2" :> action_2, ...}] displays as expr, evaluating action_i whenever "event_i" occurs in connection with expr.

KnightTourGraph (Built-in Mathematica Symbol)

KnightTourGraph[m, n] gives a Knight's tour graph on an m*n chessboard.