Mathematica supports logical operators not only for programming, but for mathematical operations as well.
VertexCount[g] gives a count of the number of vertices in the graph g.VertexCount[g, patt] gives a count of the number of vertices that match the pattern patt.
GraphDifference[g_1, g_2] gives the graph difference of the graphs g_1 and g_2.
Coefficient[expr, form] gives the coefficient of form in the polynomial expr. Coefficient[expr, form, n] gives the coefficient of form^n in expr.
InverseEllipticNomeQ[q] gives the parameter m corresponding to the nome q in an elliptic function.
Head
(Built-in Mathematica Symbol) Head[expr] gives the head of expr.
Most of the documentation provided for Mathematica is concerned with explaining what Mathematica does, not how it does it. But the purpose of this is to say at least a little ...
Count
(Built-in Mathematica Symbol) Count[list, pattern] gives the number of elements in list that match pattern. Count[expr, pattern, levelspec] gives the total number of subexpressions matching pattern that ...
VectorScale is an option to VectorPlot, ListVectorPlot, and related functions that determines the length and arrowhead size of field vectors that are drawn.
WeibullDistribution[\[Alpha], \[Beta]] represents a Weibull distribution with shape parameter \[Alpha] and scale parameter \[Beta].WeibullDistribution[\[Alpha], \[Beta], ...