ChineseRemainder[{r_1, r_2, ...}, {m_1, m_2, ...}] gives the smallest non-negative x that satisfies all the integer congruences x mod m_i = r_i mod m_i.
Conditioned[expr, cond] or expr \[Conditioned] cond represents expr conditioned by the predicate cond.
Conjunction[expr, {a_1, a_2, ...}] gives the conjunction of expr over all choices of the Boolean variables a_i.
ConnectedComponents[g] gives the connected components of the graph g.ConnectedComponents[g, {v_1, v_2, ...}] gives the connected components that include at least one of the ...
ConnectedGraphQ[g] yields True if the graph g is connected, and False otherwise.
ControllabilityGramian[ss] gives the controllability Gramian of the StateSpaceModel object ss.
ControllabilityMatrix[ss] gives the controllability matrix of the StateSpaceModel object ss.
CorrelationDistance[u, v] gives the correlation coefficient distance between vectors u and v.
CrossMatrix[r] gives a matrix whose elements are 1 in a centered cross-shaped region that extends r positions along each index direction, and are 0 otherwise.CrossMatrix[r, ...
CyclicGroup[n] represents the cyclic group of degree n.