proposition: Lemma stn_implies_nneq0 { n : nat } (i : ⟦ n ⟧%stn) : n ≠ 0.
proof: Proof. apply natgthtoneq, stn_implies_ngt0, i. Defined.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.Combinatorics.Maybe UniMath.Combinatorics.StandardFiniteSets UniMath.Algebra.Domains_and_Fields UniMath.Algebra.RigsAndRings