]> matita.cs.unibo.it Git - helm.git/blobdiff - helm/software/matita/library/didactic/exercises/natural_deduction.ma
- transcript: bugfix
[helm.git] / helm / software / matita / library / didactic / exercises / natural_deduction.ma
index 078c7fb00fe0489c74a9028d878198cdb386225d..feac0296dd456259de8dd7246b3748032af6d364 100644 (file)
@@ -1,3 +1,17 @@
+(**************************************************************************)
+(*       ___                                                             *)
+(*      ||M||                                                             *)
+(*      ||A||       A project by Andrea Asperti                           *)
+(*      ||T||                                                             *)
+(*      ||I||       Developers:                                           *)
+(*      ||T||       A.Asperti, C.Sacerdoti Coen,                          *)
+(*      ||A||       E.Tassi, S.Zacchiroli                                 *)
+(*      \   /                                                             *)
+(*       \ /        This file is distributed under the terms of the       *)
+(*        v         GNU Lesser General Public License Version 2.1         *)
+(*                                                                        *)
+(**************************************************************************)
+
 (* Istruzioni: 
 
      http://mowgli.cs.unibo.it/~tassi/exercise-natural_deduction.html