Cycles is an optional argument for the function Involutions.

CycleStructure[p, x] returns the monomial in x[1], x[2], ..., x[Length[p]] that is the cycle structure of the permutation p.

CyclicGroupIndex[n, x] returns the cycle index of the cyclic group on n symbols, expressed as a polynomial in x[1], x[2], ..., x[n].

CyclicGroup[n] returns the cyclic group of permutations on n symbols.

Cyclic is an argument to the Polya-theoretic functions ListNecklaces, NumberOfNecklaces, and NecklacePolynomial, which count or enumerate distinct necklaces. Cyclic refers to ...

DeBruijnGraph[m, n] constructs the n-dimensional De Bruijn graph with m symbols for integers m > 0 and n > 1. DeBruijnGraph[alph, n] constructs the n-dimensional De Bruijn ...

DeBruijnSequence[a, n] returns a De Bruijn sequence on the alphabet a, a shortest sequence in which every string of length n on alphabet a occurs as a contiguous subsequence.

DegreeSequence[g] gives the sorted degree sequence of graph g.

Degrees[g] returns the degrees of vertex 1, 2, 3, ... in that order.

DegreesOf2Neighborhood[g, v] returns the sorted list of degrees of vertices of graph g within a distance of 2 from v.