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=a5c53bf3e17a212da07212849aec0276de36e8a5;hb=31be09cc0d040577917783e050e1d38c0daa8f01;hp=9332d62da367653aa5571f9604cbc3902c0ed76e;hpb=b8e20d61b2e76f7a36f05b8803e60cc3388c0882;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 9332d62da..a5c53bf3e 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 +27,45 @@
    <table name="basic_2_sum"/>
 
    <subsection name="B">Stage "B"</subsection>
-   <news class="alpha" date="Ongoing.">
-         Context-sensitive subject equivalence
-         for native type assignment.
+   <news class="beta" date="2019 April 16.">
+         Extended (λδ-2) and restricted (λδ-1) validity is decidable 
+         (anniversary milestone).
+   </news>
+   <news class="beta" date="2019 March 25.">
+         Preservation of validity for rt-computation
+         does not need the sort degree parameter
+         (i.e. no induction on the degree).
+   </news>
+   <news class="beta" date="2018 November 1.">
+         Extended (λδ-2) and restricted (λδ-1) type rules justified.
+   </news>
+   <news class="alpha" date="2018 September 21.">
+         λδ-2A completed with
+         confluence of rt-computation and
+         preservation of validity for rt-computation.
+   </news>
+   <news class="alpha" date="2018 June 8.">
+         Behavioral component rt_computation completed.
+   </news>
+   <news class="alpha" date="2018 April 16.">
+         "Big tree" theorem
+         (anniversary milestone).
+   </news>
+   <news class="alpha" date="2018 March 9.">
+         Support for rt-computation completed.
+   </news>
+   <news class="alpha" date="2017 October 17.">
+         Exclusion binder in local environments.
+         Syntactic component updated:
+         syntax, relocation, s_transition, s_computation, static, i_static.
+   </news>
+   <news class="alpha" date="2017 April 16.">
+         Strong rt-normalization
+         for simply typed terms
+         (anniversary milestone).
    </news>
-
-   <subsection name="A2">Stage "A2": "Extending the Applicability Condition"</subsection>
-
    <news class="alpha" date="2017 March 16.">
-         First behavioral component reconstructed:
-         rt_transition.
+         Behavioral component rt_transition completed.
    </news>
    <news class="alpha" date="2017 February 19.">
          Generic candidates of reducibility.
@@ -48,7 +77,7 @@
          Confluence for context-sensitive parallel r-transition on terms.
    </news>
    <news class="alpha" date="2016 April 16.">
-         Syntactic component reconstructed:
+         Syntactic component completed:
          syntax, relocation, s_transition, s_computation, static
          (anniversary milestone).
    </news>
@@ -56,15 +85,15 @@
          Relocation with reference transforming maps (rtmap).
    </news>
    <news class="alpha" date="2015 October 9.">
-         λδ version 2A2 is started.
+         λδ-2B is started.
    </news>
 
-   <subsection name="A1">Stage "A1": "Extending the Applicability Condition"</subsection>
+   <subsection name="A">Stage "A" </subsection>
    <news class="delta" date="2015 August 27.">
-         λδ version 2A1 appears too complex and is dismissed.
+         λδ-2A appears too complex and is dismissed.
    </news>
    <news class="gamma" date="2014 October 28.">
-         λδ version 2A1 is released.
+         λδ version 2A is released.
    </news>
    <news class="beta" date="2014 September 9.">
          Iterated static type assignment defined (more elegantly)
@@ -84,7 +113,7 @@
          (anniversary milestone).
    </news>
    <news class="alpha" date="2014 January 20.">
-         Parametrized slicing of local environments
+         Parametrized slicing on local environments
 	 comprises both versions of this operation
 	 (one from basic_1, the other used in basic_2 till now).
    </news>
@@ -132,7 +161,7 @@
          Confluence for context-free parallel reduction on terms.
    </news>
    <news class="alpha" date="2011 April 17.">
-         λδ version 2 is started.
+         λδ-2A is started.
    </news>
 
    <section4 name="structure">Logical Structure of the Specification</section4>