Definition equiv_Pullbacks_2 : @Limits.Pullbacks.Pullbacks C <- Pullbacks. Proof. intros X' a b c f g. set (X := X' a b c f g). exact (Limits.Pullbacks.make_Pullback (PullbackSqrCommutes X) (equiv_isPullback_2 _ _ _ _ _ (isPullback_Pullback X))). Defined.
Require Import UniMath.Foundations.PartD. Require Import UniMath.Foundations.Propositions. Require Import UniMath.Foundations.Sets. Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.Combinatorics.StandardFiniteSets. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Univalence. Require Import UniMath.CategoryTheory.Limits.Graphs.Limits. Require Import UniMath.CategoryTheory.Limits.Graphs.Colimits.