fact: Definition row_vec {X : UU} {n : nat} (vec : Vector X n) : Matrix X 1 n := λ i j, vec j.
imports: UniMath.Combinatorics.FiniteSets UniMath.Combinatorics.Lists UniMath.Combinatorics.Vectors UniMath.MoreFoundations.PartA UniMath.MoreFoundations.Tactics