c-cyclical monotonicity
= c-cyclical monotonicity
{title2=$\sum_i c(x_i,y_i)\le\sum_i c(x_{i+1},y_i)$}
= c-cyclically monotone
{synonym}
A set of source-destination pairs has this property if every finite cyclic reassignment of destinations cannot lower its total cost. A <transport plan> has the property if it is concentrated on such a set. For a general cost, this is stronger than a two-point monotonicity test.