fact: Definition hd_red_SCC' i t1 t2 := exists l, exists r, exists s, SCC'_tag HM (mkRule l r) = Some i /\ t1 = sub s l /\ t2 = sub s r.
imports: Coq(Permutation Multiset Setoid PermutSetoid) CoLoR(SCCTopoOrdering AGraph ATrs RelUtil RelSub BoundNat AdjMat LogicUtil NatUtil SCC SCC_dec ListExtras SN VecUtil GDomainBij OptUtil Union SortUtil ListNodup ListPermutation)