fixed coercion graph print, moved coercion graph and auto gui to the view menu, added...

[helm.git] / matita / tests / coercions.ma

diff --git a/matita/tests/coercions.ma b/matita/tests/coercions.ma
index 914126de2454d4804dfc6909837254f6d6417c68..3d788a813d80221ed63fe23a83cb0fc6ceaca571 100644 (file)
--- a/matita/tests/coercions.ma
+++ b/matita/tests/coercions.ma
@@ -13,16 +13,14 @@
 (**************************************************************************)
 
 set "baseuri" "cic:/matita/tests/coercions/".
-include "nat/nat.ma".
+
+include "nat/compare.ma".
+include "nat/times.ma".
 
 inductive pos: Set \def
 | one : pos
 | next : pos \to pos.
 
-inductive nat:Set \def
-| O : nat
-| S : nat \to nat.
-
 inductive int: Set \def
 | positive: nat \to int
 | negative : nat \to int.
@@ -60,21 +58,18 @@ definition double2:
   \forall f:int \to int. pos \to int 
 \def 
   \lambda f:int \to int. \lambda x : pos .f (nat2int (pos2nat x)).
-  
-coercion cic:/matita/logic/equality/eq_f.con.  
-coercion cic:/matita/logic/equality/eq_f1.con.
-variant xxx : ? \def eq_f.
-coercion cic:/matita/tests/coercions/xxx.con.
 
+(* This used to test eq_f as a coercion. However, posing both eq_f and sym_eq
+   as coercions made the qed time of some TPTP problems reach infty.
+   Thus eq_f is no longer a coercion (nor is sym_eq).
 theorem coercion_svelta : \forall T,S:Type.\forall f:T \to S.\forall x,y:T.x=y \to f y = f x.
   intros.
   apply ((\lambda h:f y = f x.h) H).
 qed.
+*)
 
 variant pos2nat' : ? \def pos2nat.
 
-coercion cic:/matita/tests/coercions/xxx.con.
-
 inductive initial: Set \def iii : initial.
 
 definition i2pos: ? \def \lambda x:initial.one.
@@ -83,4 +78,57 @@ coercion cic:/matita/tests/coercions/i2pos.con.
 
 coercion cic:/matita/tests/coercions/pos2nat'.con.
 
+inductive listn (A:Type) : nat \to Type \def
+ | Nil : listn A O
+ | Next : \forall n.\forall l:listn A n.\forall a:A.listn A (S n).
+ 
+definition if : \forall A:Type.\forall b:bool.\forall a,c:A.A \def
+  \lambda A,b,a,c.
+  match b with
+  [ true \Rightarrow a
+  | false \Rightarrow c].  
+ 
+let rec ith (A:Type) (n,m:nat) (dummy:A) (l:listn A n) on l \def
+  match l with
+  [ Nil \Rightarrow dummy
+  | (Next w l x) \Rightarrow if A (eqb w m) x (ith A w m dummy l)].  
+
+definition listn2function: 
+  \forall A:Type.\forall dummy:A.\forall n.listn A n \to nat \to A
+\def
+  \lambda A,dummy,n,l,m.ith A n m dummy l.
+  
+definition natlist2map: ? \def listn2function nat O.
+  
+coercion cic:/matita/tests/coercions/natlist2map.con 1.
+definition map:  \forall n:nat.\forall l:listn nat n. nat \to nat \def
+  \lambda n:nat.\lambda l:listn nat n.\lambda m:nat.l m.
+  
+definition church: nat \to nat \to nat \def times.
+
+coercion cic:/matita/tests/coercions/church.con 1.
 
+definition mapmult:  \forall n:nat.\forall l:listn nat n. nat \to nat \to nat \def
+  \lambda n:nat.\lambda l:listn nat n.\lambda m,o:nat.
+  l (m m) o (o o o).
+
+axiom T0 : Type.
+axiom T1 : Type.
+axiom T2 : Type.
+axiom T3 : Type.
+
+axiom c1 : T0 -> T1.
+axiom c2 : T1 -> T2.
+axiom c3 : T2 -> T3.
+axiom c4 : T2 -> T1.
+
+coercion cic:/matita/tests/coercions/c1.con.
+coercion cic:/matita/tests/coercions/c2.con.
+coercion cic:/matita/tests/coercions/c3.con.
+coercion cic:/matita/tests/coercions/c4.con.
+
+
+
+  
+  
+ 
\ No newline at end of file