X-Git-Url: http://git.megacz.com/?p=coq-categories.git;a=blobdiff_plain;f=src%2FFreydCategories.v;h=c269e5064cf970e22bc0970ddf1e995dd5676c5a;hp=3e26e376592aa1157989e362e2c6884b237cd31d;hb=e928451c4c45cdbdd975bbfb229e8cc2616b8194;hpb=27ffdd2265eb1c15acc62970f49d25a07bcadb05 diff --git a/src/FreydCategories.v b/src/FreydCategories.v index 3e26e37..c269e50 100644 --- a/src/FreydCategories.v +++ b/src/FreydCategories.v @@ -22,21 +22,21 @@ Require Import MonoidalCategories_ch7_8. (* A Freyd Category is... *) Class FreydCategory - (* a cartesian category C *) - `(C:CartesianCat(Ob:=Ob)(C:=C1)) + (* a cartesian category C *) + `(C:CartesianCat(Ob:=Ob)(C:=C1)(bin_obj':=bobj)) - (* a premonoidal category K with the same objects (its unit object is 1 because the functor is both IIO and strict) *) + (* a premonoidal category K with the same objects (its unit object is 1 because the functor is both IIO and strict) *) `(K:PreMonoidalCat(Ob:=Ob)(bin_obj':=bobj)(I:=@one _ _ _ C)) - (* an identity-on-objects functor J:C->Z(K) *) -:= { fc_J : Functor C (Center_is_Monoidal K) (fun x => exist (fun _ => True) x I) + (* an identity-on-objects functor J:C->Z(K) *) +:= { fc_J : Functor C (Center_is_Monoidal K) (fun x => x) - (* which is not only monoidal *) + (* which is a monoidal functor *) ; fc_mf_J : MonoidalFunctor C (Center_is_Monoidal K) fc_J - (* but in fact strict (meaning the functor's coherence maps are identities) *) - (*; fc_strict : forall a b, #(mf_first a b) ~~ id _ - FIXME - I will need to separate Subcategory from FullSubCategory in order to fix this *) + (* and strict (meaning the functor's coherence maps are identities) *) + ; fc_strict_first : forall a b, #(mf_first(PreMonoidalFunctor:=fc_mf_J) a b) ~~ id _ (* mf_consistent gives us mf_second *) +(* ; fc_strict_id : #(mf_i(PreMonoidalFunctor:=fc_mf_J)) ~~ id _*) ; fc_C := C ; fc_K := K