helm/www/lambdadelta/implementation.html

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   8     <meta name="author" content="Ferruccio Guidi" />
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  10     <title>\lambda\delta home page</title>
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  22     <div class="head1">The Formal System λδ (\lambda\delta)</div>
  23     <div class="spacer">
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  26    <div xmlns:ld="http://lambdadelta.info/" class="spacer">
  27       <br />
  28     </div>
  29     <div xmlns:ld="http://lambdadelta.info/" class="text">
  30       <table cellpadding="4" cellspacing="0">
  31         <tbody>
  32           <tr>
  33             <td class="snns component sky">
  34               <a href="http://lambdadelta.info/index.html">home</a>
  35             </td>
  36             <td class="snns component magenta">
  37               <a href="http://lambdadelta.info/news.html">news</a>
  38             </td>
  39             <td class="snns component orange">
  40               <a href="http://lambdadelta.info/documentation.html">documentation</a>
  41             </td>
  42             <td class="snns component green">
  43               <a href="http://lambdadelta.info/implementation.html">implementation</a>
  44             </td>
  45             <td class="ssnn component green">(<a href="http://lambdadelta.info/implementation.html#specifications">specifications</a>
  46               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
  47               <a href="http://lambdadelta.info/implementation.html#helena">Helena</a>)</td>
  48           </tr>
  49           <tr>
  50             <td class="snns sky">
  51               <a href="http://lambdadelta.info/index.html#foreword">Foreword</a>
  52             </td>
  53             <td class="snns magenta">
  54               <a href="http://lambdadelta.info/news.html#milestones">Milestones</a>
  55             </td>
  56             <td class="snns orange">
  57               <a href="http://lambdadelta.info/documentation.html#v2">Version 2</a>
  58             </td>
  59             <td class="snns green">
  60               <a href="http://lambdadelta.info/version_2.html">Version 2</a>
  61             </td>
  62             <td class="ssnn green">
  63               <a href="http://lambdadelta.info/ground_2.html">Background</a>
  64               <a href="http://lambdadelta.info/basic_2.html">Core</a>
  65               <a href="http://lambdadelta.info/apps_2.html">Applications</a>
  66             </td>
  67           </tr>
  68           <tr>
  69             <td class="snss sky">
  70               <a href="http://lambdadelta.info/index.html#notice">Notice</a>
  71             </td>
  72             <td class="snss magenta">
  73               <a href="http://lambdadelta.info/news.html#visibility">Visibility</a>
  74             </td>
  75             <td class="snss orange">
  76               <a href="http://lambdadelta.info/documentation.html#v1">Version 1</a>
  77             </td>
  78             <td class="snss green">
  79               <a href="http://lambdadelta.info/version_1.html">Version 1</a>
  80             </td>
  81             <td class="sssn green">
  82               <br />
  83             </td>
  84           </tr>
  85         </tbody>
  86       </table>
  87     </div>
  88
  89    <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="specifications">Computer-checked formal specifications <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b9.png" />
  90     </div>
  91    <div xmlns:ld="http://lambdadelta.info/" class="text">
  92       λδ comes in several versions listed in the following table,
  93       which includes the major milestones:
  94    </div>
  95    <div xmlns:ld="http://lambdadelta.info/" class="text">
  96       <table cellpadding="4" cellspacing="0">
  97         <tbody>
  98           <tr>
  99             <td class="snns component gray">version</td>
 100             <td class="snnn component gray">name</td>
 101             <td class="snnn component gray">developed with</td>
 102             <td class="snnn component gray">started</td>
 103             <td class="snnn component gray">announced</td>
 104             <td class="snnn component gray">released</td>
 105             <td class="ssnn component gray">dismissed</td>
 106           </tr>
 107           <tr>
 108             <td class="snns orange">2</td>
 109             <td class="snnn orange">
 110               <a href="http://lambdadelta.info/version_2.html">basic_2</a>
 111             </td>
 112             <td class="snnn orange">
 113               <a href="http://matita.cs.unibo.it/">Matita 0.99.2</a>
 114             </td>
 115             <td class="snnn orange">April 2011</td>
 116             <td class="snnn orange">July 2014</td>
 117             <td class="snnn orange">Planned in 2014</td>
 118             <td class="ssnn orange">Not planned yet</td>
 119           </tr>
 120           <tr>
 121             <td class="snss red">1</td>
 122             <td class="snsn red">
 123               <a href="http://lambdadelta.info/version_1.html">basic_1</a>
 124             </td>
 125             <td class="snsn red">
 126               <a href="http://coq.inria.fr/">Coq 7.3.1</a>
 127             </td>
 128             <td class="snsn red">May 2004</td>
 129             <td class="snsn red">January 2006</td>
 130             <td class="snsn red">November 2006</td>
 131             <td class="sssn red">May 2008</td>
 132           </tr>
 133         </tbody>
 134       </table>
 135     </div>
 136
 137    <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="tools">Tools <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b5.png" />
 138     </div>
 139
 140    <div xmlns:ld="http://lambdadelta.info/" class="head2sn" id="lddl">
 141       <img class="icon32" alt="[Crux logo]" title="the Crux" src="http://lambdadelta.info/images/crux_32.png" /> λδ Digital Library (LDDL)</div>
 142    <div xmlns:ld="http://lambdadelta.info/" class="text">
 143       The λδ Digital Library is part of <a href="http://helm.cs.unibo.it/">HELM</a>
 144       and contains resources expressed in λδ.
 145    </div>
 146    <ul xmlns:ld="http://lambdadelta.info/">
 147       <li>
 148         <span class="date">Contents:</span>
 149       Landau's "Grundlagen der Analysis"
 150       (from Jutting's specification in  <a href="http://www.win.tue.nl/automath/">Automath</a>).
 151    </li>
 152     </ul>
 153    <ul xmlns:ld="http://lambdadelta.info/">
 154       <li>
 155         <span class="date">Access:</span>
 156       <a href="http://lambdadelta.info/static/lddl/">static pages</a> (updated <span class="date">2012-10</span>),
 157       <a href="http://lambdadelta.info/download/lddl.tar.bz2">data set</a> (updated <span class="date">2012-10</span>),
 158       <a href="http://lambdadelta.info/xml/">HELM server URL</a> (updated <span class="date">2012-10</span>).
 159    </li>
 160     </ul>
 161    <ul xmlns:ld="http://lambdadelta.info/">
 162       <li>
 163         <span class="date">Examples:</span>
 164       <a href="http://lambdadelta.info/static/lddl/brg_si/grundlagen/l/e/st/eq/landau/n/rt/rp/r/c/8283/t234.ld.html">
 165          Grundlagen's definition "t234"</a>
 166       (in "basic_rg" λδ),
 167       <a href="http://lambdadelta.info/static/lddl/crg_si/grundlagen/l/e/st/eq/landau/n/rt/rp/r/c/8283/t234.ld.html">
 168          Grundlagen's definition "t234"</a>
 169       (in "complete_rg" λδ).
 170    </li>
 171     </ul>
 172
 173    <div xmlns:ld="http://lambdadelta.info/" class="head2sn" id="helena">
 174       <img class="icon32" alt="[Helena logo]" title="Helena" src="http://lambdadelta.info/images/helena_32.png" /> Helena</div>
 175    <div xmlns:ld="http://lambdadelta.info/" class="text">
 176       Helena is a λδ processor,
 177       implemented in <a href="http://caml.inria.fr/">Caml</a>
 178       as a part of the <a href="http://helm.cs.unibo.it/">HELM</a> software,
 179       meant for testing the stable features of the calculus as well as the unstable ones.
 180    </div>
 181    <div xmlns:ld="http://lambdadelta.info/" class="text">
 182       The processor source code is available in the directory
 183       <a href="http://helm.cs.unibo.it/websvn/listing.php?repname=helm&amp;path=%2Ftrunk%2Fhelm%2Fsoftware%2Fhelena%2F&amp;rev=0&amp;sc=0">/trunk/helm/software/helena/</a>
 184       of the <a href="http://helm.cs.unibo.it/software/index.html">HELM Svn repository</a>.
 185       The Svn revisions containing the stable versions of Helena are indicated next.
 186    </div>
 187    <ul xmlns:ld="http://lambdadelta.info/">
 188       <li>
 189         <span class="date">Version 0.8.2.</span>
 190       In progress.
 191    </li>
 192     </ul>
 193    <ul xmlns:ld="http://lambdadelta.info/">
 194       <li>
 195         <span class="date">Version 0.8.1 (2010-11).</span>
 196       Exploits a subset of "complete_rg" λδ as the intermediate language.
 197       Features importation from ".hln" files containing λδ textual syntax.
 198       The overall validation speed of the "Grundlagen der Analysis"
 199       increases of 22% with respect toversion 0.8.0.
 200       [Svn revision: 11032] (<a href="http://lambdadelta.info/download/helena_0.8.1.tar.gz">archived source code</a>)
 201       <ul>
 202           <li>
 203          A <a href="http://www.jedsoft.org/jed/">Jed mode</a>
 204          for editing ".hln" files (containing λδ textual syntax):
 205          <a href="http://lambdadelta.info/download/helena.sl">helena.sl</a>
 206          (revised <span class="date">2010-11</span>).
 207       </li>
 208           <li>
 209          <span class="date">2009-12.</span>
 210          Helena appears in F. Wiedijk's
 211          <a href="http://www.cs.ru.nl/%7Efreek/digimath/index.html#helena">
 212             index of computer math systems</a>.
 213       </li>
 214         </ul>
 215    </li>
 216     </ul>
 217    <ul xmlns:ld="http://lambdadelta.info/">
 218       <li>
 219         <span class="date">Version 0.8.0 (2009-09).</span>
 220       Supports "basic_rg" λδ with naive implementation of impredicative sort inclusion.
 221       Features importation from <a href="http://www.win.tue.nl/automath/">Automath</a>
 222       and exportation to <a href="http://www.w3.org/XML/">XML</a>.
 223       <a href="http://lambdadelta.info/documentation.html#ldp6">Documentation</a>.
 224       [Svn revision: 10304] (<a href="http://lambdadelta.info/download/helena_0.8.0.tar.gz">archived source code</a>).
 225       <ul>
 226           <li>
 227          A <a href="http://www.jedsoft.org/jed/">Jed mode</a>
 228          for editing ".aut" files
 229          (containing <a href="http://www.win.tue.nl/automath/">Automath</a> textual syntax):
 230          <a href="http://lambdadelta.info/download/automath.sl">automath.sl</a>
 231          (revised <span class="date">2008-07</span>).
 232       </li>
 233           <li>
 234          <span class="date">2009-09.</span>
 235          Jutting's specification of Landau's "Grundlagen der Analysis"
 236          enters λδ Digital Library.
 237       </li>
 238           <li>
 239          <span class="date">2009-06.</span>
 240          Jutting's specification of Landau's "Grundlagen der Analysis"
 241          is successfully processed, enabling sort inclusion.
 242       </li>
 243         </ul>
 244    </li>
 245     </ul>
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 272     <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Sun, 20 Jul 2014 15:02:32 +0200</div>
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