Conditioned[expr, cond] or expr \[Conditioned] cond represents expr conditioned by the predicate cond.
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.
ControllableModelQ[ss] yields True if the StateSpaceModel object ss is controllable, and False otherwise.
CopyToClipboard[expr] replaces the contents of the clipboard with expr.
CovarianceEstimatorFunction is an option for generalized linear model fitting functions that specifies the estimator for the parameter covariance matrix.
CreateScheduledTask[expr] creates a task that will repeatedly evaluate expr once per second.CreateScheduledTask[expr, time] creates a task that will repeatedly evaluate expr ...
CriticalSection[{var_1, var_2, ...}, expr] locks the variables var_i with respect to parallel computation, evaluates expr, then releases the var_i.
CyclicGroup[n] represents the cyclic group of degree n.