DownValues (Built-in Mathematica Symbol)

DownValues[f] gives a list of transformation rules corresponding to all downvalues defined for the symbol f.

Equivalent (Built-in Mathematica Symbol)

Equivalent[e_1, e_2, ...] represents the logical equivalence e_1 \[DoubleLeftRightArrow] e_2 \[DoubleLeftRightArrow] ..., giving True when all of the e_i are the same.

ExactNumberQ (Built-in Mathematica Symbol)

ExactNumberQ[expr] returns True if expr is an exact real or complex number, and returns False otherwise.

ExpressionCell (Built-in Mathematica Symbol)

ExpressionCell[expr] gives an expression cell that can appear in a Mathematica notebook. ExpressionCell[expr, " style"] gives an expression cell with the specified style.

GraphPlot3D (Built-in Mathematica Symbol)

GraphPlot3D[{v i 1 -> v j 1, v i 2 -> v j 2, ...}] generates a 3D plot of the graph in which vertex v_ik is connected to vertex v_jk.GraphPlot3D[{{v i 1 -> v j 1, lbl_1}, ...

Hold (Built-in Mathematica Symbol)

Hold[expr] maintains expr in an unevaluated form.

InexactNumberQ (Built-in Mathematica Symbol)

InexactNumberQ[expr] returns True if expr is an inexact real or complex number, and returns False otherwise.

Longest (Built-in Mathematica Symbol)

Longest[p] is a pattern object that matches the longest sequence consistent with the pattern p.

MatrixQ (Built-in Mathematica Symbol)

MatrixQ[expr] gives True if expr is a list of lists or a two-dimensional SparseArray object that can represent a matrix, and gives False otherwise. MatrixQ[expr, test] gives ...

Message (Built-in Mathematica Symbol)

Message[symbol::tag] prints the message symbol::tag unless it has been switched off. Message[symbol::tag, e_1, e_2, ...] prints a message, inserting the values of the e_i as ...