PolynomialMod[poly, m] gives the polynomial poly reduced modulo m. PolynomialMod[poly, {m_1, m_2, ...}] reduces modulo all of the m_i.
$MaxPiecewiseCases gives the maximum number of cases to allow in explicit Piecewise objects generated by expanding any single piecewise function.
EllipticF[\[Phi], m] gives the elliptic integral of the first kind F(\[Phi] \[VerticalSeparator] m).
NestList[f, expr, n] gives a list of the results of applying f to expr 0 through n times.
Resultant[poly_1, poly_2, var] computes the resultant of the polynomials poly_1 and poly_2 with respect to the variable var. Resultant[poly_1, poly_2, var, Modulus -> p] ...
FaceGridsStyle is an option for 3D graphics functions that specifies how face grids should be rendered.
HoldForm[expr] prints as the expression expr, with expr maintained in an unevaluated form.
BooleanGraph[bfunc, g_1, ..., g_n] gives the Boolean graph defined by the Boolean function bfunc on the graphs g_1, ..., g_n.
DefaultOptions is a style option that allows default options to be specified for particular formatting and related constructs.
Path
(Built-in Mathematica Symbol) Path is an option for Get and related functions which gives a list of directories to search in attempting to find an external file.