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Diffstat (limited to 'test-suite/bugs/closed/4116.v')
| -rw-r--r-- | test-suite/bugs/closed/4116.v | 383 |
1 files changed, 383 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/4116.v b/test-suite/bugs/closed/4116.v new file mode 100644 index 00000000..f808cb45 --- /dev/null +++ b/test-suite/bugs/closed/4116.v @@ -0,0 +1,383 @@ +(* File reduced by coq-bug-finder from original input, then from 13191 lines to 1315 lines, then from 1601 lines to 595 lines, then from 585 lines to 379 lines *) +(* coqc version 8.5beta1 (March 2015) compiled on Mar 3 2015 3:50:31 with OCaml 4.01.0 + coqtop version cagnode15:/afs/csail.mit.edu/u/j/jgross/coq-8.5,v8.5 (ac62cda8a4f488b94033b108c37556877232137a) *) + +Axiom admit : False. +Ltac admit := exfalso; exact admit. + +Global Set Primitive Projections. + +Notation projT1 := proj1_sig (only parsing). +Notation projT2 := proj2_sig (only parsing). + +Definition relation (A : Type) := A -> A -> Type. + +Class Reflexive {A} (R : relation A) := + reflexivity : forall x : A, R x x. + +Class Symmetric {A} (R : relation A) := + symmetry : forall x y, R x y -> R y x. + +Notation idmap := (fun x => x). +Delimit Scope function_scope with function. +Delimit Scope path_scope with path. +Delimit Scope fibration_scope with fibration. +Open Scope path_scope. +Open Scope fibration_scope. +Open Scope function_scope. + +Notation pr1 := projT1. +Notation pr2 := projT2. + +Notation "x .1" := (pr1 x) (at level 3, format "x '.1'") : fibration_scope. +Notation "x .2" := (pr2 x) (at level 3, format "x '.2'") : fibration_scope. + +Notation compose := (fun g f x => g (f x)). + +Notation "g 'o' f" := (compose g%function f%function) (at level 40, left associativity) : function_scope. + +Inductive paths {A : Type} (a : A) : A -> Type := + idpath : paths a a. + +Arguments idpath {A a} , [A] a. + +Notation "x = y :> A" := (@paths A x y) : type_scope. +Notation "x = y" := (x = y :>_) : type_scope. + +Definition inverse {A : Type} {x y : A} (p : x = y) : y = x + := match p with idpath => idpath end. + +Global Instance symmetric_paths {A} : Symmetric (@paths A) | 0 := @inverse A. + +Definition concat {A : Type} {x y z : A} (p : x = y) (q : y = z) : x = z := + match p, q with idpath, idpath => idpath end. + +Notation "1" := idpath : path_scope. + +Notation "p @ q" := (concat p%path q%path) (at level 20) : path_scope. + +Notation "p ^" := (inverse p%path) (at level 3, format "p '^'") : path_scope. + +Definition transport {A : Type} (P : A -> Type) {x y : A} (p : x = y) (u : P x) : P y := + match p with idpath => u end. + +Definition ap {A B:Type} (f:A -> B) {x y:A} (p:x = y) : f x = f y + := match p with idpath => idpath end. + +Definition pointwise_paths {A} {P:A->Type} (f g:forall x:A, P x) + := forall x:A, f x = g x. + +Notation "f == g" := (pointwise_paths f g) (at level 70, no associativity) : type_scope. + +Definition apD10 {A} {B:A->Type} {f g : forall x, B x} (h:f=g) +: f == g + := fun x => match h with idpath => 1 end. + +Definition Sect {A B : Type} (s : A -> B) (r : B -> A) := + forall x : A, r (s x) = x. + +Class IsEquiv {A B : Type} (f : A -> B) := BuildIsEquiv { + equiv_inv : B -> A ; + eisretr : Sect equiv_inv f; + eissect : Sect f equiv_inv; + eisadj : forall x : A, eisretr (f x) = ap f (eissect x) + }. + +Notation "f ^-1" := (@equiv_inv _ _ f _) (at level 3, format "f '^-1'") : function_scope. + +Class Contr_internal (A : Type) := BuildContr { + center : A ; + contr : (forall y : A, center = y) + }. + +Inductive trunc_index : Type := +| minus_two : trunc_index +| trunc_S : trunc_index -> trunc_index. + +Notation "n .+1" := (trunc_S n) (at level 2, left associativity, format "n .+1") : trunc_scope. +Local Open Scope trunc_scope. +Notation "-2" := minus_two (at level 0) : trunc_scope. +Notation "-1" := (-2.+1) (at level 0) : trunc_scope. +Notation "0" := (-1.+1) : trunc_scope. + +Fixpoint IsTrunc_internal (n : trunc_index) (A : Type) : Type := + match n with + | -2 => Contr_internal A + | n'.+1 => forall (x y : A), IsTrunc_internal n' (x = y) + end. + +Class IsTrunc (n : trunc_index) (A : Type) : Type := + Trunc_is_trunc : IsTrunc_internal n A. + +Tactic Notation "transparent" "assert" "(" ident(name) ":" constr(type) ")" := + refine (let __transparent_assert_hypothesis := (_ : type) in _); + [ + | ( + let H := match goal with H := _ |- _ => constr:(H) end in + rename H into name) ]. + +Definition transport_idmap_ap A (P : A -> Type) x y (p : x = y) (u : P x) +: transport P p u = transport idmap (ap P p) u + := match p with idpath => idpath end. + +Section Adjointify. + + Context {A B : Type} (f : A -> B) (g : B -> A). + Context (isretr : Sect g f) (issect : Sect f g). + + Let issect' := fun x => + ap g (ap f (issect x)^) @ ap g (isretr (f x)) @ issect x. + + Let is_adjoint' (a : A) : isretr (f a) = ap f (issect' a). + admit. + Defined. + + Definition isequiv_adjointify : IsEquiv f + := BuildIsEquiv A B f g isretr issect' is_adjoint'. + +End Adjointify. + +Record TruncType (n : trunc_index) := BuildTruncType { + trunctype_type : Type ; + istrunc_trunctype_type : IsTrunc n trunctype_type + }. +Arguments trunctype_type {_} _. + +Coercion trunctype_type : TruncType >-> Sortclass. + +Notation "n -Type" := (TruncType n) (at level 1) : type_scope. +Notation hSet := 0-Type. + +Module Export Category. + Module Export Core. + Set Implicit Arguments. + + Delimit Scope morphism_scope with morphism. + Delimit Scope category_scope with category. + Delimit Scope object_scope with object. + + Record PreCategory := + Build_PreCategory' { + object :> Type; + morphism : object -> object -> Type; + + identity : forall x, morphism x x; + compose : forall s d d', + morphism d d' + -> morphism s d + -> morphism s d' + where "f 'o' g" := (compose f g); + + associativity : forall x1 x2 x3 x4 + (m1 : morphism x1 x2) + (m2 : morphism x2 x3) + (m3 : morphism x3 x4), + (m3 o m2) o m1 = m3 o (m2 o m1); + + associativity_sym : forall x1 x2 x3 x4 + (m1 : morphism x1 x2) + (m2 : morphism x2 x3) + (m3 : morphism x3 x4), + m3 o (m2 o m1) = (m3 o m2) o m1; + + left_identity : forall a b (f : morphism a b), identity b o f = f; + right_identity : forall a b (f : morphism a b), f o identity a = f; + + identity_identity : forall x, identity x o identity x = identity x + }. + Arguments identity {!C%category} / x%object : rename. + Arguments compose {!C%category} / {s d d'}%object (m1 m2)%morphism : rename. + + Definition Build_PreCategory + object morphism compose identity + associativity left_identity right_identity + := @Build_PreCategory' + object + morphism + compose + identity + associativity + (fun _ _ _ _ _ _ _ => symmetry _ _ (associativity _ _ _ _ _ _ _)) + left_identity + right_identity + (fun _ => left_identity _ _ _). + + Module Export CategoryCoreNotations. + Infix "o" := compose : morphism_scope. + Notation "1" := (identity _) : morphism_scope. + End CategoryCoreNotations. + + End Core. + +End Category. +Module Export Core. + Set Implicit Arguments. + + Delimit Scope functor_scope with functor. + + Local Open Scope morphism_scope. + + Section Functor. + Variables C D : PreCategory. + + Record Functor := + { + object_of :> C -> D; + morphism_of : forall s d, morphism C s d + -> morphism D (object_of s) (object_of d); + composition_of : forall s d d' + (m1 : morphism C s d) (m2: morphism C d d'), + morphism_of _ _ (m2 o m1) + = (morphism_of _ _ m2) o (morphism_of _ _ m1); + identity_of : forall x, morphism_of _ _ (identity x) + = identity (object_of x) + }. + End Functor. + Arguments morphism_of [C%category] [D%category] F%functor [s%object d%object] m%morphism : rename, simpl nomatch. + +End Core. +Module Export Morphisms. + Set Implicit Arguments. + + Local Open Scope category_scope. + Local Open Scope morphism_scope. + + Class IsIsomorphism {C : PreCategory} {s d} (m : morphism C s d) := + { + morphism_inverse : morphism C d s; + left_inverse : morphism_inverse o m = identity _; + right_inverse : m o morphism_inverse = identity _ + }. + + Class Isomorphic {C : PreCategory} s d := + { + morphism_isomorphic :> morphism C s d; + isisomorphism_isomorphic :> IsIsomorphism morphism_isomorphic + }. + + Coercion morphism_isomorphic : Isomorphic >-> morphism. + + Local Infix "<~=~>" := Isomorphic (at level 70, no associativity) : category_scope. + + Section iso_equiv_relation. + Variable C : PreCategory. + + Global Instance isisomorphism_identity (x : C) : IsIsomorphism (identity x) + := {| morphism_inverse := identity x; + left_inverse := left_identity C x x (identity x); + right_inverse := right_identity C x x (identity x) |}. + + Global Instance isomorphic_refl : Reflexive (@Isomorphic C) + := fun x : C => {| morphism_isomorphic := identity x |}. + + Definition idtoiso (x y : C) (H : x = y) : Isomorphic x y + := match H in (_ = y0) return (x <~=~> y0) with + | 1%path => reflexivity x + end. + End iso_equiv_relation. + +End Morphisms. + +Notation IsCategory C := (forall s d : object C, IsEquiv (@idtoiso C s d)). + +Notation isotoid C s d := (@equiv_inv _ _ (@idtoiso C s d) _). + +Notation cat_of obj := + (@Build_PreCategory obj + (fun x y => x -> y) + (fun _ x => x) + (fun _ _ _ f g => f o g)%core + (fun _ _ _ _ _ _ _ => idpath) + (fun _ _ _ => idpath) + (fun _ _ _ => idpath) + ). +Definition set_cat : PreCategory := cat_of hSet. +Set Implicit Arguments. + +Local Open Scope morphism_scope. + +Section Grothendieck. + Variable C : PreCategory. + Variable F : Functor C set_cat. + + Record Pair := + { + c : C; + x : F c + }. + + Local Notation Gmorphism s d := + { f : morphism C s.(c) d.(c) + | morphism_of F f s.(x) = d.(x) }. + + Definition identity_H s + := apD10 (identity_of F s.(c)) s.(x). + + Definition Gidentity s : Gmorphism s s. + Proof. + exists 1. + apply identity_H. + Defined. + + Definition Gcategory : PreCategory. + Proof. + refine (@Build_PreCategory + Pair + (fun s d => Gmorphism s d) + Gidentity + _ + _ + _ + _); admit. + Defined. +End Grothendieck. + +Lemma isotoid_1 {C} `{IsCategory C} {x : C} {H : IsIsomorphism (identity x)} +: isotoid C x x {| morphism_isomorphic := (identity x) ; isisomorphism_isomorphic := H |} + = idpath. + admit. +Defined. +Generalizable All Variables. + +Section Grothendieck2. + Context `{IsCategory C}. + Variable F : Functor C set_cat. + + Instance iscategory_grothendieck_toset : IsCategory (Gcategory F). + Proof. + intros s d. + refine (isequiv_adjointify _ _ _ _). + { + intro m. + transparent assert (H' : (s.(c) = d.(c))). + { + apply (idtoiso C (x := s.(c)) (y := d.(c)))^-1%function. + exists (m : morphism _ _ _).1. + admit. + + } + { + transitivity {| x := transport (fun x => F x) H' s.(x) |}. + admit. + + { + change d with {| c := d.(c) ; x := d.(x) |}; simpl. + apply ap. + subst H'. + simpl. + refine (transport_idmap_ap _ (fun x => F x : Type) _ _ _ _ @ _ @ (m : morphism _ _ _).2). + change (fun x => F x : Type) with (trunctype_type o object_of F)%function. + admit. + } + } + } + { + admit. + } + + { + intro x. + hnf in s, d. + destruct x. + simpl. + erewrite @isotoid_1. |