proposition: Lemma comp_equalizer_eq : forall a u v, has_equalizer a u v -> comp a u (equalizer a u v) = comp a v (equalizer a u v).
proof: Proof. ir. cp (is_equalizer_equalizer H). uh H0; ee. uh H0; ee. am. Qed.
imports: Arith colimits little_cat fc_limits cardinal