Commonest[list] gives a list of the elements that are the most common in list.Commonest[list, n] gives a list of the n most common elements in list.

CompilationOptions is an option for Compile that specifies settings for the compilation process.

CompilationTarget is an option for Compile that specifies the target runtime for the compiled function.

CompiledFunction[args...] represents compiled code for evaluating a compiled function.

Compiled is an option for various numerical and plotting functions which specifies whether the expressions they work with should automatically be compiled.

Compile[{x_1, x_2, ...}, expr] creates a compiled function that evaluates expr assuming numerical values of the x_i. Compile[{{x_1, t_1}, ...}, expr] assumes that x_i is of a ...

Complement[e_all, e_1, e_2, ...] gives the elements in e_all which are not in any of the e_i.

CompleteGraph[n] gives the complete graph with n vertices K_n.CompleteGraph[{n_1, n_2, ..., n_k}] gives the complete k-partite graph with n_1 + n_2 + \[CenterEllipsis] + n_k ...

CompleteGraphQ[g] yields True if the graph g is a complete graph, and False otherwise.CompleteGraphQ[g, vlist] yields True if the subgraph induced by vlist is a complete ...

CompleteKaryTree[n] gives the complete binary tree with n levels.CompleteKaryTree[n, k] gives the complete k-ary tree with n levels.