1 (**************************************************************************)
4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
10 (* \ / This file is distributed under the terms of the *)
11 (* v GNU General Public License Version 2 *)
13 (**************************************************************************)
15 (* Project started Tue Aug 22, 2006 ***************************************)
17 set "baseuri" "cic:/matita/LAMBDA-TYPES/Unified-Sub/preamble".
22 include "logic/equality.ma".
23 include "../../RELATIONAL/datatypes/Bool.ma".
24 include "../../RELATIONAL/NPlus/props.ma".
25 include "../../RELATIONAL/NLE/props.ma".
26 include "../../RELATIONAL/NLE/nplus.ma".
28 axiom f_equal_3: \forall (A,B,C,D:Set).
29 \forall (f:A \to B \to C \to D).
33 x1 = x2 \to y1 = y2 \to z1 = z2 \to
34 f x1 y1 z1 = f x2 y2 z2.