From: Claudio Sacerdoti Coen <claudio.sacerdoticoen@unibo.it>
Date: Wed, 11 Jan 2006 11:26:28 +0000 (+0000)
Subject: Hand-made generated inversion lemma.
X-Git-Tag: make_still_working~7852
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=552bdad5b59b096af0e0bbefc660e5f8b0d6c2ec;p=helm.git

Hand-made generated inversion lemma.
It heavily uses the new tinycal features.
---

diff --git a/helm/matita/tests/inversion2.ma b/helm/matita/tests/inversion2.ma
index 1125212dc..65dc75d40 100644
--- a/helm/matita/tests/inversion2.ma
+++ b/helm/matita/tests/inversion2.ma
@@ -24,6 +24,25 @@ inductive le (n:nat) : nat \to Prop \def
    leO : le n n
  | leS : \forall m. le n m \to le n (S m).
  
+theorem le_inv:
+ \forall n,m.
+  \forall P: nat -> nat -> Prop.
+   ? -> ? -> le n m -> P n m.
+[7:
+  intros;
+  inversion H;
+  [ apply x
+  | simplify;
+    apply x1
+  ]
+| skip
+| skip
+| skip
+| skip
+| skip
+| skip
+]
+qed.
 
 inductive ledx : nat \to nat \to Prop \def
    ledxO : \forall n. ledx n n