FactorInteger[n] gives a list of the prime factors of the integer n, together with their exponents. FactorInteger[n, k] does partial factorization, pulling out at most k ...
Floor
(Built-in Mathematica Symbol) Floor[x] gives the greatest integer less than or equal to x. Floor[x, a] gives the greatest multiple of a less than or equal to x.
FractionalPart[x] gives the fractional part of x.
StringSplit["string"] splits " string" into a list of substrings separated by whitespace. StringSplit["string", patt] splits into substrings separated by delimiters matching ...
WeierstrassSigma[u, {g_2, g_3}] gives the Weierstrass sigma function \[Sigma](u; g_2, g_3).
BoundedDiagram[{{a_1, b_1}, ...}, {{x_1, y_1}, ...}] yields the bounded Voronoi diagram of the points {x_1, y_1}, {x_2, y_2} ..., where the bound is the convex polygon formed ...
VoronoiDiagram[{{x_1, y_1}, {x_2, y_2}, ...}] yields the planar Voronoi diagram of the points {x_1, y_1}, {x_2, y_2}, ....VoronoiDiagram[{{x_1, y_1}, {x_2, y_2}, ...}, val] ...
The Developer Utilities Package includes functions that directly access specific internal algorithms and capabilities of Mathematica that are normally used only as part of ...
ExpressionToSymbolicMathML[expr] converts the Mathematica expression, expr, into a MathML-flavored SymbolicXML structure.