{A} `{HasEquivs A} {a b c : A} (g : b $<~> c) (f : a $<~> b) : a $<~> c := Build_CatEquiv (g $o f).
Require Import Basics.Utf8 Basics.Overture Basics.Tactics Basics.Equivalences. Require Import WildCat.Core. Require Import WildCat.Opposite.