X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fweb%2Fbasic_2.ldw.xml;h=28575ff0ea587c7a0b377529bd7140048bd6c21e;hb=bfd440cc2a790741616cae6b375609c6bbdc3b24;hp=66fb5e30c9db52626deb2aaafa8994454cb793c5;hpb=0e16720654c6667b94433e91dddc3c53b904e200;p=helm.git
diff --git a/matita/matita/contribs/lambdadelta/basic_2/web/basic_2.ldw.xml b/matita/matita/contribs/lambdadelta/basic_2/web/basic_2.ldw.xml
index 66fb5e30c..28575ff0e 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/web/basic_2.ldw.xml
+++ b/matita/matita/contribs/lambdadelta/basic_2/web/basic_2.ldw.xml
@@ -27,8 +27,26 @@
Stage "B"
+
+ Applicability condition is now parametrized
+ with a generic subset of numbers.
+
+
+ Applicability condition parametrized
+ with an initial interval of numbers
+ allows λδ-2B to generalize both λδ-2A and λδ-1B.
+
+
+ Extended (λδ-2A) and restricted (λδ-1B) validity is decidable
+ (anniversary milestone).
+
+
+ Preservation of validity for rt-computation
+ does not need the sort degree parameter
+ (i.e. no induction on the degree).
+
- Extended (λδ-2) and restricted (λδ-1) type rules justified.
+ Extended (λδ-2A) and restricted (λδ-1B) validity rules justified.
λδ-2A completed with
@@ -84,7 +102,7 @@
λδ-2A appears too complex and is dismissed.
- λδ version 2A is released.
+ λδ-2A is released.
Iterated static type assignment defined (more elegantly)