fact: Definition transitive_closure_of {k} (g : graph k) (l : list (graph k)) : Prop := forall g', In g' l -> In (g ⋅ g') l /\ In (g' ⋅ g) l.
imports: Equations(Equations) Examples.Fin Relations Utf8 Relations Wellfounded Setoid RelationClasses Morphisms Lia Bool List Arith String Coq(FunctionalExtensionality) ssreflect