(a : A) {b b' : B} (p : b = b') : jglue a b @ ap joinr p = jglue a b'. Proof. destruct p. apply concat_p1. Defined.
Require Import Basics Types. Require Import Cubical.DPath Cubical.PathSquare. Require Import NullHomotopy. Require Import Extensions. Require Import Colimits.Pushout. Require Import Truncations.Core Truncations.Connectedness. Require Import Pointed.Core. Require Import WildCat. Require Import Spaces.Nat.Core.