Section id_catfunct_def.
Variable F : Functor C D.
Definition Id_CatFunct_tau (a : C) := Id (F a).
Canonical Structure Id_CatFunct := Build_NT Id_CatFunct_nt_law.
End id_catfunct_def.

Lemma Idl_CatFunct : Idl_law'' Comp_CatFunct Id_CatFunct.