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=1be3304c95f9752a36c39238bca256f904f543e2;hb=db020b4218272e2e35641ce3bc3b0a9b3afda899;hp=f55e45f41b41d15556fd0730aec1167e0179ced9;hpb=58ea181757dce19b875b2f5a224fe193b2263004;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 f55e45f41..1be3304c9 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
@@ -27,16 +27,54 @@
Stage "B"
-
- Context-sensitive subject equivalence
- for native type assignment.
+
+ 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-2A) and restricted (λδ-1A) type rules justified.
+
+
+ λδ-2A completed with
+ confluence of rt-computation and
+ preservation of validity for rt-computation.
+
+
+ Behavioral component rt_computation completed.
+
+
+ "Big tree" theorem
+ (anniversary milestone).
+
+
+ Support for rt-computation completed.
+
+
+ Exclusion binder in local environments.
+ Syntactic component updated:
+ syntax, relocation, s_transition, s_computation, static, i_static.
+
+
+ Strong rt-normalization
+ for simply typed terms
+ (anniversary milestone).
-
- Stage "A2": "Extending the Applicability Condition"
-
- First behavioral component reconstructed:
- rt_transition.
+ Behavioral component rt_transition completed.
Generic candidates of reducibility.
@@ -48,7 +86,7 @@
Confluence for context-sensitive parallel r-transition on terms.
- Syntactic component reconstructed:
+ Syntactic component completed:
syntax, relocation, s_transition, s_computation, static
(anniversary milestone).
@@ -56,15 +94,15 @@
Relocation with reference transforming maps (rtmap).
- λδ version 2A2 is started.
+ λδ-2B is started.
- Stage "A1": "Extending the Applicability Condition"
+ Stage "A"
- λδ version 2A1 appears too complex and is dismissed.
+ λδ-2A appears too complex and is dismissed.
- λδ version 2A1 is released.
+ λδ version 2A is released.
Iterated static type assignment defined (more elegantly)
@@ -132,7 +170,7 @@
Confluence for context-free parallel reduction on terms.
- λδ version 2 is started.
+ λδ-2A is started.
Logical Structure of the Specification