fact: Definition sig_functor_mor_inv : Functor sig_mor' sig_mor_as_sig := Build_Functor sig_mor' sig_mor_as_sig (fun x => exist _ x tt) (fun _ _ => idmap) (fun _ _ _ _ _ => idpath) (fun _ => idpath).
imports: HoTT.Tactics Types.Forall Types.Sigma Basics.Trunc Category.Core Functor.Core Category.Sigma.Core Functor.Paths