proposition: Fact redirect_proof1 (T : finType) x (A : {set T}) : x \in x |: A.
proof: Proof. by rewrite !inE eqxx. Qed.
imports: Coq(RelationClasses Morphisms Setoid Lia) mathcomp(all_ssreflect) GraphTheory(edone finite_quotient preliminaries) GraphTheory(digraph sgraph minor checkpoint cp_minor) GraphTheory(setoid_bigop structures pttdom ptt) GraphTheory(mgraph mgraph2 skeleton bounded)