fact: Definition isofnelcontr {X : UU} (contrx : iscontr X) : isofnel 1 X := hinhpr (nelstructoncontr contrx).
imports: UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.NegativePropositions UniMath.Combinatorics.StandardFiniteSets UniMath.MoreFoundations.Subtypes