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="2020-04-16.">
  30          Sort hierarchy parameter removed from unbound rt-transition
  31          (anniversary milestone).
  32    </news>
  33    <news class="gamma" date="2020-02-27.">
  34          λδ-2B is repackaged without λδ-ground_2.
  35    </news>
  36    <news class="gamma" date="2019-11-19.">
  37          λδ-2B is released.
  38    </news>
  39    <news class="beta" date="2019-09-03.">
  40          Applicability condition is now parametrized
  41          with a generic subset of numbers.
  42    </news>
  43    <news class="beta" date="2019-06-02.">
  44          Applicability condition parametrized
  45          with an initial interval of numbers
  46          allows λδ-2B to generalize both λδ-2A and λδ-1B.
  47    </news>
  48    <news class="beta" date="2019-04-16.">
  49          Extended (λδ-2A) and restricted (λδ-1B) validity is decidable
  50          (anniversary milestone).
  51    </news>
  52    <news class="beta" date="2019-03-25.">
  53          Preservation of validity for rt-computation
  54          does not need the sort degree parameter
  55          (i.e. no induction on the degree).
  56    </news>
  57    <news class="beta" date="2018-11-01.">
  58          Extended (λδ-2A) and restricted (λδ-1B) validity rules justified.
  59    </news>
  60    <news class="alpha" date="2018-09-21.">
  61          λδ-2A completed with
  62          confluence of rt-computation and
  63          preservation of validity for rt-computation.
  64    </news>
  65    <news class="alpha" date="2018-06-08.">
  66          Behavioral component rt_computation completed.
  67    </news>
  68    <news class="alpha" date="2018-04-16.">
  69          "Big tree" theorem
  70          (anniversary milestone).
  71    </news>
  72    <news class="alpha" date="2018-03-09.">
  73          Support for rt-computation completed.
  74    </news>
  75    <news class="alpha" date="2017-10-17.">
  76          Exclusion binder in local environments.
  77          Syntactic component updated:
  78          syntax, relocation, s_transition, s_computation, static, i_static.
  79    </news>
  80    <news class="alpha" date="2017-04-16.">
  81          Strong rt-normalization
  82          for simply typed terms
  83          (anniversary milestone).
  84    </news>
  85    <news class="alpha" date="2017-03-16.">
  86          Behavioral component rt_transition completed.
  87    </news>
  88    <news class="alpha" date="2017-02-19.">
  89          Generic candidates of reducibility.
  90    </news>
  91    <news class="alpha" date="2017-01-17.">
  92          Confluence for parallel r-transition on referred entries of local environments.
  93    </news>
  94    <news class="alpha" date="2016-09-15.">
  95          Confluence for context-sensitive parallel r-transition on terms.
  96    </news>
  97    <news class="alpha" date="2016-04-16.">
  98          Syntactic component completed:
  99          syntax, relocation, s_transition, s_computation, static
 100          (anniversary milestone).
 101    </news>
 102    <news class="alpha" date="2016-03-25.">
 103          Relocation with reference transforming maps (rtmap).
 104    </news>
 105    <news class="alpha" date="2015-10-09.">
 106          λδ-2B is started.
 107    </news>
 108
 109    <section4 name="structure">Logical Structure of the Specification</section4>
 110    <body>This table reports the specification's components and their planes.
 111    </body>
 112    <table name="basic_2_src"/>
 113
 114    <footer/>
 115 </page>