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    <subsection name="B">Stage "B"</subsection>
  30    <news class="beta" date="2018 November 1.">
  31          Extended (λδ-2) and restricted (λδ-1) type rules justified.
  32    </news>
  33    <news class="alpha" date="2018 September 21.">
  34          λδ-2A completed with
  35          confluence of rt-computation and
  36          preservation of validity for rt-computation.
  37    </news>
  38    <news class="alpha" date="2018 June 8.">
  39          Behavioral component rt_computation completed.
  40    </news>
  41    <news class="alpha" date="2018 April 16.">
  42          "Big tree" theorem
  43          (anniversary milestone).
  44    </news>
  45    <news class="alpha" date="2018 March 9.">
  46          Support for rt-computation completed.
  47    </news>
  48    <news class="alpha" date="2017 October 17.">
  49          Exclusion binder in local environments.
  50          Syntactic component updated:
  51          syntax, relocation, s_transition, s_computation, static, i_static.
  52    </news>
  53    <news class="alpha" date="2017 April 16.">
  54          Strong rt-normalization
  55          for simply typed terms
  56          (anniversary milestone).
  57    </news>
  58    <news class="alpha" date="2017 March 16.">
  59          Behavioral component rt_transition completed.
  60    </news>
  61    <news class="alpha" date="2017 February 19.">
  62          Generic candidates of reducibility.
  63    </news>
  64    <news class="alpha" date="2017 January 17.">
  65          Confluence for parallel r-transition on referred entries of local environments.
  66    </news>
  67    <news class="alpha" date="2016 September 15.">
  68          Confluence for context-sensitive parallel r-transition on terms.
  69    </news>
  70    <news class="alpha" date="2016 April 16.">
  71          Syntactic component completed:
  72          syntax, relocation, s_transition, s_computation, static
  73          (anniversary milestone).
  74    </news>
  75    <news class="alpha" date="2016 March 25.">
  76          Relocation with reference transforming maps (rtmap).
  77    </news>
  78    <news class="alpha" date="2015 October 9.">
  79          λδ-2B is started.
  80    </news>
  81
  82    <subsection name="A">Stage "A" </subsection>
  83    <news class="delta" date="2015 August 27.">
  84          λδ-2A appears too complex and is dismissed.
  85    </news>
  86    <news class="gamma" date="2014 October 28.">
  87          λδ version 2A is released.
  88    </news>
  89    <news class="beta" date="2014 September 9.">
  90          Iterated static type assignment defined (more elegantly)
  91          as a primitive notion.
  92    </news>
  93    <news class="beta" date="2014 June 18.">
  94          Preservation of stratified native validity
  95          for context-sensitive computation on terms.
  96    </news>
  97    <news class="alpha" date="2014 June 9.">
  98          Strong qrst-normalization
  99          for simply typed terms.
 100    </news>
 101    <news class="alpha" date="2014 April 16.">
 102          Lazy equivalence on local environments
 103          added as q-step to rst-computation on closures
 104          (anniversary milestone).
 105    </news>
 106    <news class="alpha" date="2014 January 20.">
 107          Parametrized slicing on local environments
 108          comprises both versions of this operation
 109          (one from basic_1, the other used in basic_2 till now).
 110    </news>
 111    <news class="alpha" date="2013 August 7.">
 112          Passive support for global environments.
 113    </news>
 114    <news class="alpha" date="2013 July 27.">
 115          Reaxiomatized β-reductum as in rt-reduction.
 116    </news>
 117    <news class="alpha" date="2013 July 20.">
 118          Context-sensitive strong rt-normalization
 119          for simply typed terms.
 120    </news>
 121    <news class="alpha" date="2013 April 16.">
 122          Reaxiomatized substitution and reduction
 123          commute with respect to subclosure
 124          (anniversary milestone).
 125    </news>
 126    <news class="alpha" date="2013 March 16.">
 127          Mutual recursive preservation of stratified native validity
 128          for rst-computation on closures.
 129    </news>
 130    <news class="alpha" date="2012 October 16.">
 131          Confluence for context-free parallel reduction on closures.
 132    </news>
 133    <news class="alpha" date="2012 July 26.">
 134          Term binders polarized to control ζ-reduction (not released).
 135    </news>
 136    <news class="alpha" date="2012 April 16.">
 137          Context-sensitive subject equivalence
 138          for atomic arity assignment
 139          (anniversary milestone).
 140    </news>
 141    <news class="alpha" date="2012 March 15.">
 142          Context-sensitive strong normalization
 143          for simply typed terms.
 144    </news>
 145    <news class="alpha" date="2012 January 27.">
 146          Generic candidates of reducibility.
 147    </news>
 148    <news class="alpha" date="2011 September 21.">
 149          Confluence for context-sensitive parallel reduction on terms.
 150    </news>
 151    <news class="alpha" date="2011 September 6.">
 152          Confluence for context-free parallel reduction on terms.
 153    </news>
 154    <news class="alpha" date="2011 April 17.">
 155          λδ-2A is started.
 156    </news>
 157
 158    <section4 name="structure">Logical Structure of the Specification</section4>
 159    <body>This table reports the specification's components and their planes.
 160    </body>
 161    <table name="basic_2_src"/>
 162
 163    <footer/>
 164 </page>