2 ||M|| This file is part of HELM, an Hypertextual, Electronic
3 ||A|| Library of Mathematics, developed at the Computer Science
4 ||T|| Department of the University of Bologna, Italy.
7 ||A|| This file is distributed under the terms of the
8 \ / GNU General Public License Version 2
10 V_______________________________________________________________ *)
12 (* THE FORMAL SYSTEM λδ - MATITA SOURCE SCRIPTS
13 * Specification started: 2011 April 17
14 * - Patience on me so that I gain peace and perfection! -
15 * [ suggested invocation to start formal specifications with ]
18 include "Ground-2/ground.ma".
19 include "Basic-2/notation.ma".
21 (* BINARY ITEMS *************************************************************)
23 (* binary binding items *)
24 inductive bind2: Type[0] ≝
25 | Abbr: bind2 (* abbreviation *)
26 | Abst: bind2 (* abstraction *)
29 (* binary non-binding items *)
30 inductive flat2: Type[0] ≝
31 | Appl: flat2 (* application *)
32 | Cast: flat2 (* explicit type annotation *)
36 inductive item2: Type[0] ≝
37 | Bind: bind2 → item2 (* binding item *)
38 | Flat: flat2 → item2 (* non-binding item *)
41 coercion item2_of_bind2: ∀I:bind2.item2 ≝ Bind on _I:bind2 to item2.
43 coercion item2_of_flat2: ∀I:flat2.item2 ≝ Flat on _I:flat2 to item2.