proposition: Lemma terminalcoalgebra_isiso : is_iso α.
proof: Proof. apply (is_iso_qinv α α'). split. - exact αα'_idA. - exact α'α_idFA. Defined.
imports: UniMath.Foundations.Propositions UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Limits.Terminal