proposition: Lemma eta_unit' {X : UU} (f : unit -> X) : (λ _, f tt) = f.
proof: Proof. apply funextfun. intro x. induction x. apply idpath. Defined.
imports: UniMath.MoreFoundations.All UniMath.Combinatorics.StandardFiniteSets UniMath.Induction.PolynomialFunctors UniMath.Induction.W.Core UniMath.Induction.W.Wtypes UniMath.Induction.FunctorAlgebras_legacy UniMath.Algebra.Universal.Signatures UniMath.Algebra.Universal.Algebras UniMath.Algebra.Universal.HVectors UniMath.Algebra.Universal.Terms