fact: Definition pushout_sym {A B C} {f : A -> B} {g : A -> C} : Pushout f g <~> Pushout g f := equiv_adjointify pushout_sym_map pushout_sym_map sect_pushout_sym_map sect_pushout_sym_map.
imports: Basics Types.Paths Types.Arrow Types.Sigma Types.Sum Types.Universe Colimits.Coeq