PetersenGraph[n, k] gives the generalized Petersen graph P n, k.
QRDecomposition[m] yields the QR decomposition for a numerical matrix m. The result is a list {q, r}, where q is an orthogonal matrix and r is an upper-triangular matrix.
StandardForm[expr] prints as the standard Mathematica two-dimensional representation of expr.
StarGraph[n] gives the star graph with n vertices S_n.
Texture
(Built-in Mathematica Symbol) Texture[obj] is a graphics directive that specifies that obj should be used as a texture on faces of polygons and other filled graphics objects.
TraditionalForm[expr] prints as an approximation to the traditional mathematical notation for expr.
TuranGraph[n, k] gives the k-partite Turán graph with n vertices T n, k.
WheelGraph[n] gives the wheel graph with n vertices W_n.
It is always a good idea to give variables and functions names that are as explicit as possible. Sometimes, however, such names may get inconveniently long. In Mathematica, ...
Special forms for some common symbols. This is equivalent to Sin[60Degree]. Here is the long form of the input.