some tests patched

[helm.git] / matita / library / datatypes / constructors.ma

diff --git a/matita/library/datatypes/constructors.ma b/matita/library/datatypes/constructors.ma
index 3567dd915463c8b6c2f809ed8218987a67e78042..b91a59e177f71897dbb0bba85a37214cee9c062c 100644 (file)
--- a/matita/library/datatypes/constructors.ma
+++ b/matita/library/datatypes/constructors.ma
@@ -17,6 +17,8 @@ include "logic/equality.ma".
 
 inductive void : Set \def.
 
+inductive unit : Set ≝ something: unit.
+
 inductive Prod (A,B:Set) : Set \def
 pair : A \to B \to Prod A B.