fact: Definition RT x y := proj1_sig topo_sortable_Rquo' (nats_decr_lt dim) x y = true.
imports: Coq(Permutation Multiset Heap PermutSetoid) CoLoR(AdjMat RelUtil ListExtras LogicUtil VecUtil NatUtil RelSub Path SortUtil ListNodup OptUtil BoundNat SCC SCC_dec Total)