DiscreteIndicator[x, x_1, {u_1, u_2, ...}] yields the discrete indicator function, equal to 1 if x = x_1 and 0 if x = u_i for any i.
DiagramPlot[{{x_1, y_1}, {x_2, y_2}, ...}] plots the Voronoi diagram of the points {{x_1, y_1}, ...}. DiagramPlot[{{x_1, y_1}, {x_2, y_2}, ...}, {q_1, q_2, ...}, val] plots ...
Constants is an option for Dt which gives a list of objects to be taken as constants.
This does an integral over the interior of the unit circle. Here is an equivalent form. Even though an integral may be straightforward over a simple rectangular region, it ...
Sequence[expr_1, expr_2, ...] represents a sequence of arguments to be spliced automatically into any function.
Delimiter represents a delimiter to be displayed in objects such as PopupMenu and Manipulate.
Solving equations involving power series. Here is a power series. This gives an equation involving the power series.
p ... or RepeatedNull[p] is a pattern object that represents a sequence of zero or more expressions, each matching p.
Prepend
(Built-in Mathematica Symbol) Prepend[expr, elem] gives expr with elem prepended.
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 ...