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       head = "cic:/matita/lambdadelta/basic_2/ (core λδ version 2)"
   7 >
   8    <sitemap name="sitemap"/>
   9 <!--
  10    <section>System's Syntax and Behavior</section>
  11    <body>This is a summary of the "block structure"
  12          of the System's syntactic items and reductions.
  13    </body>
  14    <table name="basic_2_blk"/>
  15    <body>* In terms only.
  16          ** In terms and local environments only.
  17          *** In global environments only.
  18          **** Sort level k in terms only.
  19    </body>
  20 -->
  21
  22    <section4 name="summary">Summary of the Specification</section4>
  23    <body>Here is a numerical account of the specification's contents
  24          and its timeline.
  25    </body>
  26    <table name="basic_2_sum"/>
  27
  28    <subsection name="B">Stage "B"</subsection>
  29    <news class="alpha" date="Ongoing.">
  30          Context-sensitive subject equivalence
  31          for native type assignment.
  32    </news>
  33
  34    <subsection name="A2">Stage "A2": "Extending the Applicability Condition"</subsection>
  35    <news class="alpha" date="2015 October 9.">
  36          λδ version 2A2 is started.
  37    </news>
  38
  39    <subsection name="A1">Stage "A1": "Extending the Applicability Condition"</subsection>
  40    <news class="delta" date="2015 August 27.">
  41          λδ version 2A1 appears too complex and is dismissed.
  42    </news>
  43    <news class="gamma" date="2014 October 28.">
  44          λδ version 2A1 is released.
  45    </news>
  46    <news class="beta" date="2014 September 9.">
  47          Iterated static type assignment defined (more elegantly)
  48          as a primitive notion.
  49    </news>
  50    <news class="beta" date="2014 June 18.">
  51          Preservation of stratified native validity
  52          for context-sensitive computation on terms.
  53    </news>
  54    <news class="alpha" date="2014 June 9.">
  55          Strong qrst-normalization
  56          for simply typed terms.
  57    </news>
  58    <news class="alpha" date="2014 April 16.">
  59          Lazy equivalence on local environments
  60          added as q-step to rst-computation on closures
  61          (anniversary milestone).
  62    </news>
  63    <news class="alpha" date="2014 January 20.">
  64          Parametrized slicing of local environments
  65          comprises both versions of this operation
  66          (one from basic_1, the other used in basic_2 till now).
  67    </news>
  68    <news class="alpha" date="2013 August 7.">
  69          Passive support for global environments.
  70    </news>
  71    <news class="alpha" date="2013 July 27.">
  72          Reaxiomatized β-reductum as in rt-reduction.
  73    </news>
  74    <news class="alpha" date="2013 July 20.">
  75          Context-sensitive strong rt-normalization
  76          for simply typed terms.
  77    </news>
  78    <news class="alpha" date="2013 April 16.">
  79          Reaxiomatized substitution and reduction
  80          commute with respect to subclosure
  81          (anniversary milestone).
  82    </news>
  83    <news class="alpha" date="2013 March 16.">
  84          Mutual recursive preservation of stratified native validity
  85          for rst-computation on closures.
  86    </news>
  87    <news class="alpha" date="2012 October 16.">
  88          Confluence for context-free parallel reduction on closures.
  89    </news>
  90    <news class="alpha" date="2012 July 26.">
  91          Term binders polarized to control ζ-reduction (not released).
  92    </news>
  93    <news class="alpha" date="2012 April 16.">
  94          Context-sensitive subject equivalence
  95          for atomic arity assignment
  96          (anniversary milestone).
  97    </news>
  98    <news class="alpha" date="2012 March 15.">
  99          Context-sensitive strong normalization
 100          for simply typed terms.
 101    </news>
 102    <news class="alpha" date="2012 January 27.">
 103          Support for abstract candidates of reducibility.
 104    </news>
 105    <news class="alpha" date="2011 September 21.">
 106          Confluence for context-sensitive parallel reduction on terms.
 107    </news>
 108    <news class="alpha" date="2011 September 6.">
 109          Confluence for context-free parallel reduction on terms.
 110    </news>
 111    <news class="alpha" date="2011 April 17.">
 112          λδ version 2 is started.
 113    </news>
 114
 115    <section4 name="structure">Logical Structure of the Specification</section4>
 116    <body>This table reports the specification's components and their planes.
 117    </body>
 118    <table name="basic_2_src"/>
 119
 120    <footer/>
 121 </page>