update in basic_2

[helm.git] / matita / matita / contribs / lambdadelta / basic_1 / lift / defs.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_1/lift/defs.ma b/matita/matita/contribs/lambdadelta/basic_1/lift/defs.ma
index 6f9475944759fbd4b3f18dee47485cd84b238b93..6c595922842e3d842aee274038b16a59ebcfed57 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_1/lift/defs.ma
+++ b/matita/matita/contribs/lambdadelta/basic_1/lift/defs.ma
@@ -18,10 +18,10 @@ include "basic_1/tlist/defs.ma".
 
 include "basic_1/s/defs.ma".
 
-let rec lref_map (f: (nat \to nat)) (d: nat) (t: T) on t: T \def match t with 
-[(TSort n) \Rightarrow (TSort n) | (TLRef i) \Rightarrow (TLRef (match (blt i 
-d) with [true \Rightarrow i | false \Rightarrow (f i)])) | (THead k u t0) 
-\Rightarrow (THead k (lref_map f d u) (lref_map f (s k d) t0))].
+rec definition lref_map (f: (nat \to nat)) (d: nat) (t: T) on t: T \def match 
+t with [(TSort n) \Rightarrow (TSort n) | (TLRef i) \Rightarrow (TLRef (match 
+(blt i d) with [true \Rightarrow i | false \Rightarrow (f i)])) | (THead k u 
+t0) \Rightarrow (THead k (lref_map f d u) (lref_map f (s k d) t0))].
 
 definition lift:
  nat \to (nat \to (T \to T))
@@ -29,7 +29,7 @@ definition lift:
  \lambda (h: nat).(\lambda (i: nat).(\lambda (t: T).(lref_map (\lambda (x: 
 nat).(plus x h)) i t))).
 
-let rec lifts (h: nat) (d: nat) (ts: TList) on ts: TList \def match ts with 
-[TNil \Rightarrow TNil | (TCons t ts0) \Rightarrow (TCons (lift h d t) (lifts 
-h d ts0))].
+rec definition lifts (h: nat) (d: nat) (ts: TList) on ts: TList \def match ts 
+with [TNil \Rightarrow TNil | (TCons t ts0) \Rightarrow (TCons (lift h d t) 
+(lifts h d ts0))].