<page xmlns="http://lambdadelta.info/"
description = "\lambda\delta home page"
title = "\lambda\delta home page"
+ logo = "crux"
head = "cic:/matita/lambdadelta/basic_2/ (core λδ version 2)"
>
<sitemap name="sitemap"/>
-->
<section4 name="summary">Summary of the Specification</section4>
- <body>Here is a numerical acount of the specification's contents
+ <body>Here is a numerical account of the specification's contents
and its timeline.
</body>
<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 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>
+ <news class="alpha" date="2017 March 16.">
+ Behavioral component rt_transition completed.
+ </news>
+ <news class="alpha" date="2017 February 19.">
+ Generic candidates of reducibility.
+ </news>
+ <news class="alpha" date="2017 January 17.">
+ Confluence for parallel r-transition on referred entries of local environments.
+ </news>
+ <news class="alpha" date="2016 September 15.">
+ Confluence for context-sensitive parallel r-transition on terms.
+ </news>
+ <news class="alpha" date="2016 April 16.">
+ Syntactic component completed:
+ syntax, relocation, s_transition, s_computation, static
+ (anniversary milestone).
+ </news>
+ <news class="alpha" date="2016 March 25.">
+ Relocation with reference transforming maps (rtmap).
+ </news>
+ <news class="alpha" date="2015 October 9.">
+ λδ-2B is started.
</news>
- <subsection name="A">Stage "A": "Extending the Applicability Condition"</subsection>
+ <subsection name="A">Stage "A" </subsection>
+ <news class="delta" date="2015 August 27.">
+ λδ-2A appears too complex and is dismissed.
+ </news>
<news class="gamma" date="2014 October 28.">
λδ version 2A is released.
</news>
</news>
<news class="alpha" date="2014 April 16.">
Lazy equivalence on local environments
- addded as q-step to rst-computation on closures
+ added as q-step to rst-computation on closures
(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>
for simply typed terms.
</news>
<news class="alpha" date="2012 January 27.">
- Support for abstract candidates of reducibility.
+ Generic candidates of reducibility.
</news>
<news class="alpha" date="2011 September 21.">
Confluence for context-sensitive parallel reduction on terms.
Confluence for context-free parallel reduction on terms.
</news>
<news class="alpha" date="2011 April 17.">
- Specification starts.
+ λδ-2A is started.
</news>
<section4 name="structure">Logical Structure of the Specification</section4>
projects / helm.git / blobdiff