proposition: Lemma weq_matrix_1_1 {X : UU} : X ≃ Matrix X 1 1.
proof: Proof. intermediate_weq (Vector X 1); apply weq_vector_1. Defined.
imports: UniMath.Combinatorics.FiniteSets UniMath.Combinatorics.Lists UniMath.Combinatorics.Vectors UniMath.MoreFoundations.PartA UniMath.MoreFoundations.Tactics