X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flimits%2Fpreamble.ma;fp=matita%2Fmatita%2Fcontribs%2Flimits%2Fpreamble.ma;h=47724701bb3249dc8ff0d42dd15b1777d2b829a9;hb=174ee1889b5c91ef5339c718d7657ed0e5da21e8;hp=4741d33dcdcf69b7626da9ed860a154d62386e72;hpb=1b4d894e7349bba991823249f1716fb8f18239b7;p=helm.git

diff --git a/matita/matita/contribs/limits/preamble.ma b/matita/matita/contribs/limits/preamble.ma
index 4741d33dc..47724701b 100644
--- a/matita/matita/contribs/limits/preamble.ma
+++ b/matita/matita/contribs/limits/preamble.ma
@@ -17,3 +17,9 @@
 (* Project taken over by "lambdadelta" and restarted Sun Sept 20, 2015 ****)
 
 include "basics/logic.ma".
+include "../lambdadelta/ground_2/notation/xoa/false_0.ma".
+include "../lambdadelta/ground_2/notation/xoa/true_0.ma".
+
+interpretation "logical false" 'false = False.
+
+interpretation "logical true" 'true = True.