matita/matita/contribs/lambdadelta/basic_2/web/basic_2.ldw.xml

   1 <?xml version="1.0" encoding="UTF-8"?>
   2
   3 <page xmlns="http://lambdadelta.info/"
   4       description = "\lambda\delta home page"
   5       title = "\lambda\delta home page"
   6       logo = "crux"
   7       head = "cic:/matita/lambdadelta/basic_2/ (core λδ version 2)"
   8 >
   9    <sitemap name="sitemap"/>
  10 <!--
  11    <section>System's Syntax and Behavior</section>
  12    <body>This is a summary of the "block structure"
  13          of the System's syntactic items and reductions.
  14    </body>
  15    <table name="basic_2_blk"/>
  16    <body>* In terms only.
  17          ** In terms and local environments only.
  18          *** In global environments only.
  19          **** Sort level k in terms only.
  20    </body>
  21 -->
  22
  23    <section4 name="summary">Summary of the Specification</section4>
  24    <body>Here is a numerical account of the specification's contents
  25          and its timeline.
  26    </body>
  27    <table name="basic_2_sum"/>
  28
  29    <news class="gamma" date="2020-02-27.">
  30          λδ-2B is repackaged without λδ-ground_2.
  31    </news>
  32    <news class="gamma" date="2019-11-19.">
  33          λδ-2B is released.
  34    </news>
  35    <news class="beta" date="2019-09-03.">
  36          Applicability condition is now parametrized
  37          with a generic subset of numbers.
  38    </news>
  39    <news class="beta" date="2019-06-02.">
  40          Applicability condition parametrized
  41          with an initial interval of numbers
  42          allows λδ-2B to generalize both λδ-2A and λδ-1B.
  43    </news>
  44    <news class="beta" date="2019-04-16.">
  45          Extended (λδ-2A) and restricted (λδ-1B) validity is decidable
  46          (anniversary milestone).
  47    </news>
  48    <news class="beta" date="2019-03-25.">
  49          Preservation of validity for rt-computation
  50          does not need the sort degree parameter
  51          (i.e. no induction on the degree).
  52    </news>
  53    <news class="beta" date="2018-11-01.">
  54          Extended (λδ-2A) and restricted (λδ-1B) validity rules justified.
  55    </news>
  56    <news class="alpha" date="2018-09-21.">
  57          λδ-2A completed with
  58          confluence of rt-computation and
  59          preservation of validity for rt-computation.
  60    </news>
  61    <news class="alpha" date="2018-06-08.">
  62          Behavioral component rt_computation completed.
  63    </news>
  64    <news class="alpha" date="2018-04-16.">
  65          "Big tree" theorem
  66          (anniversary milestone).
  67    </news>
  68    <news class="alpha" date="2018-03-09.">
  69          Support for rt-computation completed.
  70    </news>
  71    <news class="alpha" date="2017-10-17.">
  72          Exclusion binder in local environments.
  73          Syntactic component updated:
  74          syntax, relocation, s_transition, s_computation, static, i_static.
  75    </news>
  76    <news class="alpha" date="2017-04-16.">
  77          Strong rt-normalization
  78          for simply typed terms
  79          (anniversary milestone).
  80    </news>
  81    <news class="alpha" date="2017-03-16.">
  82          Behavioral component rt_transition completed.
  83    </news>
  84    <news class="alpha" date="2017-02-19.">
  85          Generic candidates of reducibility.
  86    </news>
  87    <news class="alpha" date="2017-01-17.">
  88          Confluence for parallel r-transition on referred entries of local environments.
  89    </news>
  90    <news class="alpha" date="2016-09-15.">
  91          Confluence for context-sensitive parallel r-transition on terms.
  92    </news>
  93    <news class="alpha" date="2016-04-16.">
  94          Syntactic component completed:
  95          syntax, relocation, s_transition, s_computation, static
  96          (anniversary milestone).
  97    </news>
  98    <news class="alpha" date="2016-03-25.">
  99          Relocation with reference transforming maps (rtmap).
 100    </news>
 101    <news class="alpha" date="2015-10-09.">
 102          λδ-2B is started.
 103    </news>
 104
 105    <section4 name="structure">Logical Structure of the Specification</section4>
 106    <body>This table reports the specification's components and their planes.
 107    </body>
 108    <table name="basic_2_src"/>
 109
 110    <footer/>
 111 </page>