From: Andrea Asperti <andrea.asperti@unibo.it>
Date: Mon, 22 Aug 2005 08:25:21 +0000 (+0000)
Subject: Added datatypes/constructors.ma
X-Git-Tag: working_equations_only~23
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=be797cb755104e7c8709f2602ced5c46c5c1987b;p=helm.git

Added datatypes/constructors.ma
---

diff --git a/helm/matita/library/datatypes/constructors.ma b/helm/matita/library/datatypes/constructors.ma
new file mode 100644
index 000000000..c2bdc566b
--- /dev/null
+++ b/helm/matita/library/datatypes/constructors.ma
@@ -0,0 +1,24 @@
+(**************************************************************************)
+(*       ___	                                                            *)
+(*      ||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         *)
+(*                                                                        *)
+(**************************************************************************)
+
+set "baseuri" "cic:/matita/datatypes/constructors/".
+
+inductive void : Set \def.
+
+inductive Prod (A,B:Set) : Set \def
+pair : A \to B \to Prod A B.
+
+inductive Sum (A,B:Set) : Set \def
+  inl : A \to Sum A B
+| inr : B \to Sum A B.
\ No newline at end of file