fact: Definition term2proof {σ: signature} {s: sorts σ}: ∏ t: term σ s, isaterm s t := pr2.
imports: UniMath.MoreFoundations.Notations UniMath.MoreFoundations.PartA UniMath.Combinatorics.Maybe UniMath.Algebra.Universal.SortedTypes UniMath.Algebra.Universal.Signatures