EdgeCount[g] gives a count of the number of edges in the graph g.EdgeCount[g, patt] gives a count of the number of edges that match the pattern patt.
$UserName gives the login name of the user who invoked the Mathematica kernel, as recorded by the operating system.
Parallelize[expr] evaluates expr using automatic parallelization.
Flatten
(Built-in Mathematica Symbol) Flatten[list] flattens out nested lists. Flatten[list, n] flattens to level n. Flatten[list, n, h] flattens subexpressions with head h. Flatten[list, {{s_11, s_12, ...}, ...
EdgeRenderingFunction is an option for GraphPlot and related functions that gives a function to generate the graphics primitives to use in rendering each edge.
PolynomialRemainder[p, q, x] gives the remainder from dividing p by q, treated as polynomials in x.
DateListPlot[{{date_1, v_1}, {date_2, v_2}, ...}] plots points with values v i at a sequence of dates.DateListPlot[{v_1, v_2, ...}, datespec] plots points with dates at equal ...
NumberSeparator is an option for NumberForm and related functions which gives the string to insert at breaks between digits.
SelfLoopStyle is an option for GraphPlot and related functions that specifies how to draw self-loops that connect a vertex to itself.
SyntaxQ
(Built-in Mathematica Symbol) SyntaxQ["string"] returns True if the string corresponds to syntactically correct input for a single Mathematica expression, and returns False otherwise.