Shortest[p] is a pattern object that matches the shortest sequence consistent with the pattern p.
SimpleGraphQ[g] yields True if the graph g is a simple graph and False otherwise.
Symbol
(Built-in Mathematica Symbol) Symbol["name"] refers to a symbol with the specified name.
SystemDialogInput["type"] brings up an interactive system dialog and returns the value chosen in the dialog. SystemDialogInput["type", init] uses init as the initial setting ...
UndirectedGraphQ[g] yields True if the graph g is an undirected graph and False otherwise.
VertexCoordinateRules is an option for GraphPlot and related functions which specifies rules for determining the coordinates at which vertices should be placed.
Xnor
(Built-in Mathematica Symbol) Xnor[e_1, e_2, ...] is the logical XNOR (not XOR) function. It gives True if an even number of the e_i are True, and the rest are False. It gives False if an odd number of ...
In many computations you are concerned only with the final result of evaluating the expression given as input. But sometimes you also want to collect expressions that were ...
Finding the date and time. This gives the current date and time. The Mathematica DateList function returns whatever your computer system gives as the current date and time. ...
There are many functions that are built into Mathematica. This tutorial discusses how you can add your own simple functions to Mathematica. As a first example, consider ...