some improvements

[helm.git] / helm / software / matita / contribs / LAMBDA-TYPES / Unified-Sub / preamble.ma

diff --git a/helm/software/matita/contribs/LAMBDA-TYPES/Unified-Sub/preamble.ma b/helm/software/matita/contribs/LAMBDA-TYPES/Unified-Sub/preamble.ma
index 45f2fb18226f148b1ad92e99730bc22e6971dcc1..9470cf008fb5727e1f097cb88a7c76dead739329 100644 (file)
--- a/helm/software/matita/contribs/LAMBDA-TYPES/Unified-Sub/preamble.ma
+++ b/helm/software/matita/contribs/LAMBDA-TYPES/Unified-Sub/preamble.ma
@@ -24,3 +24,14 @@ include "../../RELATIONAL/NPlus/defs.ma".
 include "../../RELATIONAL/NLE/defs.ma".
 include "../../RELATIONAL/Nat/defs.ma".
 include "../../RELATIONAL/Bool/defs.ma".
+
+alias id "nplus_conf" = "cic:/matita/RELATIONAL/NPlus/props/nplus_conf.con".
+alias id "nle_false" = "cic:/matita/RELATIONAL/NLE/props/nle_false.con".
+
+axiom f_equal_3: \forall (A,B,C,D:Set).
+                 \forall (f:A \to B \to C \to D). 
+                 \forall (x1,x2:A).
+                 \forall (y1,y2:B).
+                 \forall (z1,z2:C). 
+                 x1 = x2 \to y1 = y2 \to z1 = z2 \to 
+                 f x1 y1 z1 = f x2 y2 z2.