proposition: Lemma min_comm (a b : nat) : min a b = min b a.
proof: Proof. apply eq_of_le_le; apply min_le_iff; split; auto using min_le_l, min_le_r. Qed.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.Combinatorics.Maybe UniMath.Combinatorics.StandardFiniteSets UniMath.Algebra.Domains_and_Fields UniMath.Algebra.RigsAndRings