helm/www/lambda_delta/basic_2.html

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   8     <meta name="author" content="Ferruccio Guidi"/>
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  10     <title>lambda_delta version 2</title>
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  16   <body lang="en-US"><div class="spacer"><a href="http://lambda-delta.info/"><img class="icon32" alt="[lambda_delta home]" title="lambda_delta home" src="http://lambda-delta.info/images/crux_32.png"/></a></div><div class="head1">cic:/matita/lambda_delta/basic_2/ (λδ version 2)</div><div class="spacer"><img class="rule" alt="[Spacer]" title="lambda_delta rainbow rule" src="http://lambda-delta.info/images/rainbow.png"/></div>
  17    <div class="head2">System's Syntax and Behavior</div>
  18    <div class="text">This is a summary of the "block structure"
  19          of the System's syntactic items and reductions.
  20    </div>
  21    <div class="text"/>
  22    <div class="text">* In terms only.
  23          ** In terms and local environments only.
  24          *** In global environments only.
  25          **** Sort level k in terms only.
  26    </div>
  27
  28    <div class="head2">Summary of the Specification</div>
  29    <div class="text">Here is a numerical acount of the specification's contents
  30          and its timeline.
  31    </div>
  32    <div class="text"><table cellpadding="4" cellspacing="0"><tbody><tr><td class="snns component grey">category</td><td class="snns plane grey">objects</td><td class="snnn number grey"><br/></td><td class="snnn plane grey"><br/></td><td class="snnn number grey"><br/></td><td class="snnn plane grey"><br/></td><td class="ssnn number grey"><br/></td></tr><tr><td class="snns component cyan">sizes</td><td class="snns plane cyan">files</td><td class="snnn number cyan">113</td><td class="snns plane cyan">bytes</td><td class="snnn number cyan">422759</td><td class="snns plane cyan"><br/></td><td class="ssnn number cyan"><br/></td></tr><tr><td class="snns component green">propositions</td><td class="snns plane green">theorems</td><td class="snnn number green">45</td><td class="snns plane green">lemmas</td><td class="snnn number green">450</td><td class="snns plane green">total</td><td class="ssnn number green">495</td></tr><tr><td class="snss component yellow">concepts</td><td class="snss plane yellow">declared</td><td class="snsn number yellow">31</td><td class="snss plane yellow">defined</td><td class="snsn number yellow">39</td><td class="snss plane yellow">total</td><td class="sssn number yellow">70</td></tr></tbody></table></div>
  33    <ul><li><span class="date">In progress.</span>
  34          Context-sensitive subject equivalence
  35          for native type assignment.
  36    </li></ul>
  37    <ul><li><span class="date">In progress.</span>
  38          Context-sensitive subject equivalence
  39          for atomic arity assignment.
  40    </li></ul>
  41    <ul><li><span class="date">2012 March 15.</span>
  42          Context-sensitive strong normalization
  43          for simply typed terms.
  44    </li></ul>
  45    <ul><li><span class="date">2012 January 27.</span>
  46          Support for abstract candidates of reducibility.
  47    </li></ul>
  48    <ul><li><span class="date">2011 September 21.</span>
  49          Confluence for context-sensitive parallel reduction.
  50    </li></ul>
  51    <ul><li><span class="date">2011 September 6.</span>
  52          Confluence for context-free parallel reduction.
  53    </li></ul>
  54    <ul><li><span class="date">2011 April 17.</span>
  55          Specification starts.
  56    </li></ul>
  57
  58    <div class="head2">Logical Structure of the Specification</div>
  59    <div class="text">The source files are grouped in planes and components
  60          according to the following table.
  61          A notation file covering the whole specification is provided.
  62          The notation for the relations or functions introduced in each file
  63          is shown in parentheses.
  64    </div>
  65    <div class="text"/>
  66
  67    <div class="head2">Physical Structure of the Specification</div>
  68    <div class="text">The source files are grouped in directories,
  69          one for each component.
  70    </div>
  71    <div class="spacer"><img class="rule" alt="[Spacer]" title="lambda_delta rainbow rule" src="http://lambda-delta.info/images/rainbow.png"/></div><div class="spacer"><br/></div><div class="spacer"><a href="http://validator.w3.org/check?uri=referer"><img class="w3c" alt="[Valid XHTML 1.1]" title="Valid XHTML 1.1" src="http://www.w3.org/Icons/valid-xhtml11-blue"/></a><a href="http://jigsaw.w3.org/css-validator/check/referer"><img class="w3c" alt="[Valid CSS level 2]" title="Valid CSS level 2" src="http://www.w3.org/Icons/valid-css2-blue"/></a><a href="http://www.w3.org/XML/"><img class="w3c" alt="[Generated from XML via XSL]" title="Generated from XML via XSL" src="http://lambda-delta.info/images/xml_xsl2.png"/></a><a href="http://www.w3.org/Graphics/PNG/"><img class="w3c" alt="[PNG used here]" title="PNG used here" src="http://lambda-delta.info/images/PNGnow2.png"/></a><a href="http://www.anybrowser.org/campaign/"><img class="w3c" alt="[Viewable with any browser]" title="Viewable with any browser" src="http://www.anybrowser.org/campaign/bvgraphics/abtfile.png"/></a></div><div class="spacer"><br/></div><div class="spacer">Last update: 2012-03-15+01:00</div>
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