Subtract (Built-in Mathematica Symbol)

x - y is equivalent to x + (-1*y).

SynchronousInitialization (Built-in Mathematica Symbol)

SynchronousInitialization is an option for Manipulate, DynamicModule, and related functions that specifies whether or not to evaluate the expression given as the setting for ...

SystemOpen (Built-in Mathematica Symbol)

SystemOpen["target"] opens the specified file, URL, or other target with the associated program on your computer system.

TautologyQ (Built-in Mathematica Symbol)

TautologyQ[bf] gives True if all combinations of values of variables make the Boolean function bf yield True.TautologyQ[expr, {a_1, a_2, ...}] gives True if all combinations ...

TotalWidth (Built-in Mathematica Symbol)

TotalWidth is an option which can be set for output streams to specify the maximum total number of characters of text that should be printed for each output expression. Short ...

TransferFunctionPoles (Built-in Mathematica Symbol)

TransferFunctionPoles[tf] gives a matrix of roots of the denominators in the TransferFunctionModel object tf.

Undefined (Built-in Mathematica Symbol)

Undefined is a symbol that represents a quantity with no defined value.

Unevaluated (Built-in Mathematica Symbol)

Unevaluated[expr] represents the unevaluated form of expr when it appears as the argument to a function.

Unitize (Built-in Mathematica Symbol)

Unitize[x] gives 0 when x is zero, and 1 when x has any other numerical value.

VertexAdd (Built-in Mathematica Symbol)

VertexAdd[g, v] makes a graph by adding the vertex v to the graph g.VertexAdd[g, {v_1, v_2, ...}] adds a collection of vertices to g.