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authorGravatar herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7>2003-11-29 17:28:49 +0000
committerGravatar herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7>2003-11-29 17:28:49 +0000
commit9a6e3fe764dc2543dfa94de20fe5eec42d6be705 (patch)
tree77c0021911e3696a8c98e35a51840800db4be2a9 /theories/Sorting/Heap.v
parent9058fb97426307536f56c3e7447be2f70798e081 (diff)
Remplacement des fichiers .v ancienne syntaxe de theories, contrib et states par les fichiers nouvelle syntaxe
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@5027 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/Sorting/Heap.v')
-rw-r--r--theories/Sorting/Heap.v274
1 files changed, 139 insertions, 135 deletions
diff --git a/theories/Sorting/Heap.v b/theories/Sorting/Heap.v
index 31e3ac447..95a40ab12 100644
--- a/theories/Sorting/Heap.v
+++ b/theories/Sorting/Heap.v
@@ -12,103 +12,102 @@
(* G. Huet 1-9-95 uses Multiset *)
-Require PolyList.
-Require Multiset.
-Require Permutation.
-Require Relations.
-Require Sorting.
+Require Import List.
+Require Import Multiset.
+Require Import Permutation.
+Require Import Relations.
+Require Import Sorting.
Section defs.
Variable A : Set.
-Variable leA : (relation A).
-Variable eqA : (relation A).
+Variable leA : relation A.
+Variable eqA : relation A.
-Local gtA := [x,y:A]~(leA x y).
+Let gtA (x y:A) := ~ leA x y.
-Hypothesis leA_dec : (x,y:A){(leA x y)}+{(leA y x)}.
-Hypothesis eqA_dec : (x,y:A){(eqA x y)}+{~(eqA x y)}.
-Hypothesis leA_refl : (x,y:A) (eqA x y) -> (leA x y).
-Hypothesis leA_trans : (x,y,z:A) (leA x y) -> (leA y z) -> (leA x z).
-Hypothesis leA_antisym : (x,y:A)(leA x y) -> (leA y x) -> (eqA x y).
+Hypothesis leA_dec : forall x y:A, {leA x y} + {leA y x}.
+Hypothesis eqA_dec : forall x y:A, {eqA x y} + {~ eqA x y}.
+Hypothesis leA_refl : forall x y:A, eqA x y -> leA x y.
+Hypothesis leA_trans : forall x y z:A, leA x y -> leA y z -> leA x z.
+Hypothesis leA_antisym : forall x y:A, leA x y -> leA y x -> eqA x y.
-Hints Resolve leA_refl.
-Hints Immediate eqA_dec leA_dec leA_antisym.
+Hint Resolve leA_refl.
+Hint Immediate eqA_dec leA_dec leA_antisym.
-Local emptyBag := (EmptyBag A).
-Local singletonBag := (SingletonBag eqA_dec).
+Let emptyBag := EmptyBag A.
+Let singletonBag := SingletonBag _ eqA_dec.
Inductive Tree : Set :=
- Tree_Leaf : Tree
- | Tree_Node : A -> Tree -> Tree -> Tree.
+ | Tree_Leaf : Tree
+ | Tree_Node : A -> Tree -> Tree -> Tree.
(** [a] is lower than a Tree [T] if [T] is a Leaf
or [T] is a Node holding [b>a] *)
-Definition leA_Tree := [a:A; t:Tree]
- Cases t of
- Tree_Leaf => True
- | (Tree_Node b T1 T2) => (leA a b)
- end.
+Definition leA_Tree (a:A) (t:Tree) :=
+ match t with
+ | Tree_Leaf => True
+ | Tree_Node b T1 T2 => leA a b
+ end.
-Lemma leA_Tree_Leaf : (a:A)(leA_Tree a Tree_Leaf).
+Lemma leA_Tree_Leaf : forall a:A, leA_Tree a Tree_Leaf.
Proof.
-Simpl; Auto with datatypes.
+simpl in |- *; auto with datatypes.
Qed.
-Lemma leA_Tree_Node : (a,b:A)(G,D:Tree)(leA a b) ->
- (leA_Tree a (Tree_Node b G D)).
+Lemma leA_Tree_Node :
+ forall (a b:A) (G D:Tree), leA a b -> leA_Tree a (Tree_Node b G D).
Proof.
-Simpl; Auto with datatypes.
+simpl in |- *; auto with datatypes.
Qed.
-Hints Resolve leA_Tree_Leaf leA_Tree_Node.
+Hint Resolve leA_Tree_Leaf leA_Tree_Node.
(** The heap property *)
Inductive is_heap : Tree -> Prop :=
- nil_is_heap : (is_heap Tree_Leaf)
- | node_is_heap : (a:A)(T1,T2:Tree)
- (leA_Tree a T1) ->
- (leA_Tree a T2) ->
- (is_heap T1) -> (is_heap T2) ->
- (is_heap (Tree_Node a T1 T2)).
-
-Hint constr_is_heap := Constructors is_heap.
-
-Lemma invert_heap : (a:A)(T1,T2:Tree)(is_heap (Tree_Node a T1 T2))->
- (leA_Tree a T1) /\ (leA_Tree a T2) /\
- (is_heap T1) /\ (is_heap T2).
+ | nil_is_heap : is_heap Tree_Leaf
+ | node_is_heap :
+ forall (a:A) (T1 T2:Tree),
+ leA_Tree a T1 ->
+ leA_Tree a T2 ->
+ is_heap T1 -> is_heap T2 -> is_heap (Tree_Node a T1 T2).
+
+Hint Constructors is_heap.
+
+Lemma invert_heap :
+ forall (a:A) (T1 T2:Tree),
+ is_heap (Tree_Node a T1 T2) ->
+ leA_Tree a T1 /\ leA_Tree a T2 /\ is_heap T1 /\ is_heap T2.
Proof.
-Intros; Inversion H; Auto with datatypes.
+intros; inversion H; auto with datatypes.
Qed.
(* This lemma ought to be generated automatically by the Inversion tools *)
-Lemma is_heap_rec : (P:Tree->Set)
- (P Tree_Leaf)->
- ((a:A)
- (T1:Tree)
- (T2:Tree)
- (leA_Tree a T1)->
- (leA_Tree a T2)->
- (is_heap T1)->
- (P T1)->(is_heap T2)->(P T2)->(P (Tree_Node a T1 T2)))
- -> (T:Tree)(is_heap T) -> (P T).
+Lemma is_heap_rec :
+ forall P:Tree -> Set,
+ P Tree_Leaf ->
+ (forall (a:A) (T1 T2:Tree),
+ leA_Tree a T1 ->
+ leA_Tree a T2 ->
+ is_heap T1 -> P T1 -> is_heap T2 -> P T2 -> P (Tree_Node a T1 T2)) ->
+ forall T:Tree, is_heap T -> P T.
Proof.
-Induction T; Auto with datatypes.
-Intros a G PG D PD PN.
-Elim (invert_heap a G D); Auto with datatypes.
-Intros H1 H2; Elim H2; Intros H3 H4; Elim H4; Intros.
-Apply H0; Auto with datatypes.
+simple induction T; auto with datatypes.
+intros a G PG D PD PN.
+elim (invert_heap a G D); auto with datatypes.
+intros H1 H2; elim H2; intros H3 H4; elim H4; intros.
+apply H0; auto with datatypes.
Qed.
-Lemma low_trans :
- (T:Tree)(a,b:A)(leA a b) -> (leA_Tree b T) -> (leA_Tree a T).
+Lemma low_trans :
+ forall (T:Tree) (a b:A), leA a b -> leA_Tree b T -> leA_Tree a T.
Proof.
-Induction T; Auto with datatypes.
-Intros; Simpl; Apply leA_trans with b; Auto with datatypes.
+simple induction T; auto with datatypes.
+intros; simpl in |- *; apply leA_trans with b; auto with datatypes.
Qed.
(** contents of a tree as a multiset *)
@@ -117,107 +116,112 @@ Qed.
in not used. Actually, we could just take as postulate:
[Parameter SingletonBag : A->multiset]. *)
-Fixpoint contents [t:Tree] : (multiset A) :=
- Cases t of
- Tree_Leaf => emptyBag
- | (Tree_Node a t1 t2) => (munion (contents t1)
- (munion (contents t2) (singletonBag a)))
-end.
+Fixpoint contents (t:Tree) : multiset A :=
+ match t with
+ | Tree_Leaf => emptyBag
+ | Tree_Node a t1 t2 =>
+ munion (contents t1) (munion (contents t2) (singletonBag a))
+ end.
(** equivalence of two trees is equality of corresponding multisets *)
-Definition equiv_Tree := [t1,t2:Tree](meq (contents t1) (contents t2)).
+Definition equiv_Tree (t1 t2:Tree) := meq (contents t1) (contents t2).
(** specification of heap insertion *)
-Inductive insert_spec [a:A; T:Tree] : Set :=
- insert_exist : (T1:Tree)(is_heap T1) ->
- (meq (contents T1) (munion (contents T) (singletonBag a))) ->
- ((b:A)(leA b a)->(leA_Tree b T)->(leA_Tree b T1)) ->
- (insert_spec a T).
+Inductive insert_spec (a:A) (T:Tree) : Set :=
+ insert_exist :
+ forall T1:Tree,
+ is_heap T1 ->
+ meq (contents T1) (munion (contents T) (singletonBag a)) ->
+ (forall b:A, leA b a -> leA_Tree b T -> leA_Tree b T1) ->
+ insert_spec a T.
-Lemma insert : (T:Tree)(is_heap T) -> (a:A)(insert_spec a T).
+Lemma insert : forall T:Tree, is_heap T -> forall a:A, insert_spec a T.
Proof.
-Induction 1; Intros.
-Apply insert_exist with (Tree_Node a Tree_Leaf Tree_Leaf); Auto with datatypes.
-Simpl; Unfold meq munion; Auto with datatypes.
-Elim (leA_dec a a0); Intros.
-Elim (H3 a0); Intros.
-Apply insert_exist with (Tree_Node a T2 T0); Auto with datatypes.
-Simpl; Apply treesort_twist1; Trivial with datatypes.
-Elim (H3 a); Intros T3 HeapT3 ConT3 LeA.
-Apply insert_exist with (Tree_Node a0 T2 T3); Auto with datatypes.
-Apply node_is_heap; Auto with datatypes.
-Apply low_trans with a; Auto with datatypes.
-Apply LeA; Auto with datatypes.
-Apply low_trans with a; Auto with datatypes.
-Simpl; Apply treesort_twist2; Trivial with datatypes.
+simple induction 1; intros.
+apply insert_exist with (Tree_Node a Tree_Leaf Tree_Leaf);
+ auto with datatypes.
+simpl in |- *; unfold meq, munion in |- *; auto with datatypes.
+elim (leA_dec a a0); intros.
+elim (H3 a0); intros.
+apply insert_exist with (Tree_Node a T2 T0); auto with datatypes.
+simpl in |- *; apply treesort_twist1; trivial with datatypes.
+elim (H3 a); intros T3 HeapT3 ConT3 LeA.
+apply insert_exist with (Tree_Node a0 T2 T3); auto with datatypes.
+apply node_is_heap; auto with datatypes.
+apply low_trans with a; auto with datatypes.
+apply LeA; auto with datatypes.
+apply low_trans with a; auto with datatypes.
+simpl in |- *; apply treesort_twist2; trivial with datatypes.
Qed.
(** building a heap from a list *)
-Inductive build_heap [l:(list A)] : Set :=
- heap_exist : (T:Tree)(is_heap T) ->
- (meq (list_contents eqA_dec l)(contents T)) ->
- (build_heap l).
+Inductive build_heap (l:list A) : Set :=
+ heap_exist :
+ forall T:Tree,
+ is_heap T ->
+ meq (list_contents _ eqA_dec l) (contents T) -> build_heap l.
-Lemma list_to_heap : (l:(list A))(build_heap l).
+Lemma list_to_heap : forall l:list A, build_heap l.
Proof.
-Induction l.
-Apply (heap_exist (nil A) Tree_Leaf); Auto with datatypes.
-Simpl; Unfold meq; Auto with datatypes.
-Induction 1.
-Intros T i m; Elim (insert T i a).
-Intros; Apply heap_exist with T1; Simpl; Auto with datatypes.
-Apply meq_trans with (munion (contents T) (singletonBag a)).
-Apply meq_trans with (munion (singletonBag a) (contents T)).
-Apply meq_right; Trivial with datatypes.
-Apply munion_comm.
-Apply meq_sym; Trivial with datatypes.
+simple induction l.
+apply (heap_exist nil Tree_Leaf); auto with datatypes.
+simpl in |- *; unfold meq in |- *; auto with datatypes.
+simple induction 1.
+intros T i m; elim (insert T i a).
+intros; apply heap_exist with T1; simpl in |- *; auto with datatypes.
+apply meq_trans with (munion (contents T) (singletonBag a)).
+apply meq_trans with (munion (singletonBag a) (contents T)).
+apply meq_right; trivial with datatypes.
+apply munion_comm.
+apply meq_sym; trivial with datatypes.
Qed.
(** building the sorted list *)
-Inductive flat_spec [T:Tree] : Set :=
- flat_exist : (l:(list A))(sort leA l) ->
- ((a:A)(leA_Tree a T)->(lelistA leA a l)) ->
- (meq (contents T) (list_contents eqA_dec l)) ->
- (flat_spec T).
+Inductive flat_spec (T:Tree) : Set :=
+ flat_exist :
+ forall l:list A,
+ sort leA l ->
+ (forall a:A, leA_Tree a T -> lelistA leA a l) ->
+ meq (contents T) (list_contents _ eqA_dec l) -> flat_spec T.
-Lemma heap_to_list : (T:Tree)(is_heap T) -> (flat_spec T).
+Lemma heap_to_list : forall T:Tree, is_heap T -> flat_spec T.
Proof.
- Intros T h; Elim h; Intros.
- Apply flat_exist with (nil A); Auto with datatypes.
- Elim H2; Intros l1 s1 i1 m1; Elim H4; Intros l2 s2 i2 m2.
- Elim (merge leA_dec eqA_dec s1 s2); Intros.
- Apply flat_exist with (cons a l); Simpl; Auto with datatypes.
- Apply meq_trans with
- (munion (list_contents eqA_dec l1) (munion (list_contents eqA_dec l2)
- (singletonBag a))).
- Apply meq_congr; Auto with datatypes.
- Apply meq_trans with
- (munion (singletonBag a) (munion (list_contents eqA_dec l1)
- (list_contents eqA_dec l2))).
- Apply munion_rotate.
- Apply meq_right; Apply meq_sym; Trivial with datatypes.
+ intros T h; elim h; intros.
+ apply flat_exist with (nil (A:=A)); auto with datatypes.
+ elim H2; intros l1 s1 i1 m1; elim H4; intros l2 s2 i2 m2.
+ elim (merge _ leA_dec eqA_dec s1 s2); intros.
+ apply flat_exist with (a :: l); simpl in |- *; auto with datatypes.
+ apply meq_trans with
+ (munion (list_contents _ eqA_dec l1)
+ (munion (list_contents _ eqA_dec l2) (singletonBag a))).
+ apply meq_congr; auto with datatypes.
+ apply meq_trans with
+ (munion (singletonBag a)
+ (munion (list_contents _ eqA_dec l1) (list_contents _ eqA_dec l2))).
+ apply munion_rotate.
+ apply meq_right; apply meq_sym; trivial with datatypes.
Qed.
(** specification of treesort *)
-Theorem treesort : (l:(list A))
- {m:(list A) | (sort leA m) & (permutation eqA_dec l m)}.
+Theorem treesort :
+ forall l:list A, {m : list A | sort leA m & permutation _ eqA_dec l m}.
Proof.
- Intro l; Unfold permutation.
- Elim (list_to_heap l).
- Intros.
- Elim (heap_to_list T); Auto with datatypes.
- Intros.
- Exists l0; Auto with datatypes.
- Apply meq_trans with (contents T); Trivial with datatypes.
+ intro l; unfold permutation in |- *.
+ elim (list_to_heap l).
+ intros.
+ elim (heap_to_list T); auto with datatypes.
+ intros.
+ exists l0; auto with datatypes.
+ apply meq_trans with (contents T); trivial with datatypes.
Qed.
-End defs.
+End defs. \ No newline at end of file