-(**************************************************************************)
-(* ___ *)
-(* ||M|| *)
-(* ||A|| A project by Andrea Asperti *)
-(* ||T|| *)
-(* ||I|| Developers: *)
-(* ||T|| The HELM team. *)
-(* ||A|| http://helm.cs.unibo.it *)
-(* \ / *)
-(* \ / This file is distributed under the terms of the *)
-(* v GNU General Public License Version 2 *)
-(* *)
-(**************************************************************************)
-
-(* Project started Tue Aug 22, 2006 ***************************************)
-
-set "baseuri" "cic:/matita/LAMBDA-TYPES/Unified/P/defs".
-
-(* POLARIZED TERMS
- - Naming policy:
- - natural numbers : sorts h k, local references i j, lengths l
- - boolean values : a b
- - generic binding items: x
- - generic flat items : y
- - generic head items : z
- - terms : p q
-*)
-
-include "../../RELATIONAL/Nat/defs.ma".
-include "../../RELATIONAL/Bool/defs.ma".
-
-inductive Bind: Set \def
- | abbr: Bind
- | abst: Bind
- | excl: Bind
-.
-
-inductive Flat: Set \def
- | appl: Flat
- | cast: Flat
-.
-
-inductive Head: Set \def
- | bind: Bind \to Head
- | flat: Flat \to Head
-.
-
-inductive P: Set \def
- | sort: Nat \to P
- | lref: Nat \to P
- | head: Bool \to Head \to P \to P \to P
-.