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.

Longest (Built-in Mathematica Symbol)

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

StateSpaceRealization (Built-in Mathematica Symbol)

StateSpaceRealization is an option to StateSpaceModel that specifies its canonical representation.

StringReplacePart (Built-in Mathematica Symbol)

StringReplacePart["string", " snew", {m, n}] replaces the characters at positions m through n in " string" by " snew". StringReplacePart["string", " snew", {{m_1, n_1}, {m_2, ...

Tr (Built-in Mathematica Symbol)

Tr[list] finds the trace of the matrix or tensor list. Tr[list, f] finds a generalized trace, combining terms with f instead of Plus. Tr[list, f, n] goes down to level n in ...