X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambda%2Fpreamble.ma;h=f3884b229489f7bbe58cd0bde50e28c7086b6833;hb=72ced8ef1347b660fa45437443553ceeea8af57a;hp=afaacb5f24e2fef8578884f37c7441500d501e65;hpb=f8bc120b39bd74ade4e11d4d3ef4355f66c42495;p=helm.git

diff --git a/matita/matita/contribs/lambda/preamble.ma b/matita/matita/contribs/lambda/preamble.ma
index afaacb5f2..f3884b229 100644
--- a/matita/matita/contribs/lambda/preamble.ma
+++ b/matita/matita/contribs/lambda/preamble.ma
@@ -12,11 +12,18 @@
 (*                                                                        *)
 (**************************************************************************)
 
-include "arithmetics/nat.ma".
+include "basics/star.ma".
+include "basics/lists/list.ma".
+include "arithmetics/exp.ma".
 
 include "xoa_notation.ma".
 include "xoa.ma".
 
+(* Note: notation for nil not involving brackets *)
+notation > "◊"
+  non associative with precedence 90
+  for @{'nil}.
+
 (* Note: For some reason this cannot be in the standard library *) 
 interpretation "logical false" 'false = False.