X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambda_delta%2Fbasic_2%2Fgrammar%2Faarity.ma;fp=matita%2Fmatita%2Fcontribs%2Flambda_delta%2Fbasic_2%2Fgrammar%2Faarity.ma;h=4d5d308fa0bfa08263dc7821be8c1efb87ce543e;hb=b405363d37a437e86705bd85f5b549a36878e7d5;hp=2f5f7b4950195796eb4f900a283fd9eef97fe419;hpb=70a6a8146e5815a97330ea291bea09cf798c0008;p=helm.git

diff --git a/matita/matita/contribs/lambda_delta/basic_2/grammar/aarity.ma b/matita/matita/contribs/lambda_delta/basic_2/grammar/aarity.ma
index 2f5f7b495..4d5d308fa 100644
--- a/matita/matita/contribs/lambda_delta/basic_2/grammar/aarity.ma
+++ b/matita/matita/contribs/lambda_delta/basic_2/grammar/aarity.ma
@@ -15,6 +15,8 @@
 (* THE FORMAL SYSTEM λδ: MATITA SOURCE FILES
  * Suggested invocation to start formal specifications with:
  *   - Patience on me to gain peace and perfection! -
+ * 2012 July 26:
+ *   term binders polarized to control ζ reduction.
  * 2012 April 16 (anniversary milestone):
  *   context-sensitive subject equivalence for atomic arity assignment.
  * 2012 March 15: