helm/www/lambdadelta/implementation.html

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
   3 <html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="en-us">
   4   <head>
   5     <meta http-equiv="Content-Language" content="en-us" />
   6     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
   7     <meta http-equiv="Content-Style-Type" content="text/css" />
   8     <meta name="author" content="Ferruccio Guidi" />
   9     <meta name="description" content="\lambda\delta home page" />
  10     <title>\lambda\delta home page</title>
  11     <link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/ld_web.css" />
  12     <link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/lddl.css" />
  13     <link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/xhtbl.css" />
  14     <link rel="shortcut icon" href="http://lambdadelta.info/images/crux_16.ico" />
  15   </head>
  16   <body lang="en-US">
  17     <div class="spacer">
  18       <a href="http://lambdadelta.info/">
  19         <img class="icon32" alt="[lambdadelta home]" title="lambdadelta home" src="http://lambdadelta.info/images/crux_32.png" />
  20       </a>
  21     </div>
  22     <div class="head1">The Formal System λδ (\lambda\delta)</div>
  23     <div class="spacer">
  24       <img class="rule" alt="[Spacer]" title="lambdadelta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
  25     </div>
  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 capitalize italic sky">
  34               <a href="http://lambdadelta.info/index.html">home</a>
  35             </td>
  36             <td class="snns capitalize italic magenta">
  37               <a href="http://lambdadelta.info/news.html">news</a>
  38             </td>
  39             <td class="snns capitalize italic orange">
  40               <a href="http://lambdadelta.info/documentation.html">documentation</a>
  41             </td>
  42             <td class="snns capitalize italic green">
  43               <a href="http://lambdadelta.info/implementation.html">implementation</a>
  44             </td>
  45             <td class="ssnn capitalize italic green">(<a href="http://lambdadelta.info/implementation.html#specifications">specifications</a> - <a href="http://lambdadelta.info/implementation.html#lddl">library</a> - <a href="http://lambdadelta.info/implementation.html#helena">Helena</a>)</td>
  46           </tr>
  47           <tr>
  48             <td class="snns sky">
  49               <a href="http://lambdadelta.info/index.html#foreword">Foreword</a>
  50             </td>
  51             <td class="snns magenta">
  52               <a href="http://lambdadelta.info/news.html#milestones">Milestones</a>
  53             </td>
  54             <td class="snns orange">
  55               <a href="http://lambdadelta.info/documentation.html#v2">Version 2</a>
  56             </td>
  57             <td class="snns green">
  58               <a href="http://lambdadelta.info/version_2.html">Version 2</a>
  59             </td>
  60             <td class="ssnn green">(<a href="http://lambdadelta.info/ground_2.html">Background</a> - <a href="http://lambdadelta.info/basic_2.html">Core</a> - <a href="http://lambdadelta.info/apps_2.html">Applications</a>)</td>
  61           </tr>
  62           <tr>
  63             <td class="snss sky">
  64               <a href="http://lambdadelta.info/index.html#notice">Notice</a>
  65             </td>
  66             <td class="snss magenta">
  67               <a href="http://lambdadelta.info/news.html#visibility">Visibility</a>
  68             </td>
  69             <td class="snss orange">
  70               <a href="http://lambdadelta.info/documentation.html#v1">Version 1</a>
  71             </td>
  72             <td class="snss green">
  73               <a href="http://lambdadelta.info/version_1.html">Version 1</a>
  74             </td>
  75             <td class="sssn green">
  76               <br />
  77             </td>
  78           </tr>
  79         </tbody>
  80       </table>
  81     </div>
  82
  83    <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/b5.png" />
  84     </div>
  85    <div xmlns:ld="http://lambdadelta.info/" class="text">
  86       λδ comes in several versions listed in the following table,
  87       which includes the major milestones:
  88    </div>
  89    <div xmlns:ld="http://lambdadelta.info/" class="text">
  90       <table cellpadding="4" cellspacing="0">
  91         <tbody>
  92           <tr>
  93             <td class="snns top capitalize italic gray">version</td>
  94             <td class="snnn top capitalize italic gray">name</td>
  95             <td class="snnn top capitalize italic gray">developed with</td>
  96             <td class="snnn top capitalize italic gray">stage</td>
  97             <td class="snnn top capitalize italic gray">started</td>
  98             <td class="snnn top capitalize italic gray">announced</td>
  99             <td class="snnn top capitalize italic gray">released</td>
 100             <td class="ssnn top capitalize italic gray">dismissed</td>
 101           </tr>
 102           <tr>
 103             <td class="snns top orange">
 104               <a href="http://lambdadelta.info/version_2">Version 2</a>
 105             </td>
 106             <td class="snnn top orange">"basic_2"</td>
 107             <td class="snnn top orange">
 108               <a href="http://matita.cs.unibo.it/">Matita 0.99.2</a>
 109             </td>
 110             <td class="snnn top orange">"A"</td>
 111             <td class="snnn top orange">April 2011</td>
 112             <td class="snnn top orange">July 2014</td>
 113             <td class="snnn top orange">Planned in 2014</td>
 114             <td class="ssnn top orange">Not planned yet</td>
 115           </tr>
 116           <tr>
 117             <td class="snss top red">
 118               <a href="http://lambdadelta.info/version_1">Version 1</a>
 119             </td>
 120             <td class="snsn top red">"basic_1"</td>
 121             <td class="snsn top red">
 122               <a href="http://coq.inria.fr/">Coq 7.3.1</a>
 123             </td>
 124             <td class="snsn top red" />
 125             <td class="snsn top red">May 2004</td>
 126             <td class="snsn top red">January 2006</td>
 127             <td class="snsn top red">November 2006</td>
 128             <td class="sssn top red">May 2008</td>
 129           </tr>
 130         </tbody>
 131       </table>
 132     </div>
 133
 134    <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" />
 135     </div>
 136
 137    <div xmlns:ld="http://lambdadelta.info/" class="head2sn" id="lddl">
 138       <img class="icon32" alt="[Crux logo]" title="the Crux" src="http://lambdadelta.info/images/crux_32.png" /> λδ Digital Library (LDDL)</div>
 139    <div xmlns:ld="http://lambdadelta.info/" class="text">
 140       The λδ Digital Library is part of <a href="http://helm.cs.unibo.it/">HELM</a>
 141       and contains resources expressed in λδ.
 142    </div>
 143    <ul xmlns:ld="http://lambdadelta.info/">
 144       <li>
 145         <span class="date">Contents:</span>
 146       Landau's "Grundlagen der Analysis"
 147       (from Jutting's specification in  <a href="http://www.win.tue.nl/automath/">Automath</a>).
 148    </li>
 149     </ul>
 150    <ul xmlns:ld="http://lambdadelta.info/">
 151       <li>
 152         <span class="date">Access:</span>
 153       <a href="http://lambdadelta.info/static/lddl/">static pages</a> (updated <span class="date">2012-10</span>),
 154       <a href="http://lambdadelta.info/download/lddl.tar.bz2">data set</a> (updated <span class="date">2012-10</span>),
 155       <a href="http://lambdadelta.info/xml/">HELM server URL</a> (updated <span class="date">2012-10</span>).
 156    </li>
 157     </ul>
 158    <ul xmlns:ld="http://lambdadelta.info/">
 159       <li>
 160         <span class="date">Examples:</span>
 161       <a href="http://lambdadelta.info/static/lddl/brg_si/grundlagen/l/e/st/eq/landau/n/rt/rp/r/c/8283/t234.ld.html">
 162          Grundlagen's definition "t234"</a>
 163       (in "basic_rg" λδ),
 164       <a href="http://lambdadelta.info/static/lddl/crg_si/grundlagen/l/e/st/eq/landau/n/rt/rp/r/c/8283/t234.ld.html">
 165          Grundlagen's definition "t234"</a>
 166       (in "complete_rg" λδ).
 167    </li>
 168     </ul>
 169
 170    <div xmlns:ld="http://lambdadelta.info/" class="head2sn" id="helena">
 171       <img class="icon32" alt="[Helena logo]" title="Helena" src="http://lambdadelta.info/images/helena_32.png" /> Helena</div>
 172    <div xmlns:ld="http://lambdadelta.info/" class="text">
 173       Helena is a λδ processor,
 174       implemented in <a href="http://caml.inria.fr/">Caml</a>
 175       as a part of the <a href="http://helm.cs.unibo.it/">HELM</a> software,
 176       meant for testing the stable features of the calculus as well as the unstable ones.
 177    </div>
 178    <div xmlns:ld="http://lambdadelta.info/" class="text">
 179       The processor source code is available in the directory
 180       <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>
 181       of the <a href="http://helm.cs.unibo.it/software/index.html">HELM Svn repository</a>.
 182       The Svn revisions containing the stable versions of Helena are indicated next.
 183    </div>
 184    <ul xmlns:ld="http://lambdadelta.info/">
 185       <li>
 186         <span class="date">Version 0.8.2.</span>
 187       In progress.
 188    </li>
 189     </ul>
 190    <ul xmlns:ld="http://lambdadelta.info/">
 191       <li>
 192         <span class="date">Version 0.8.1 (2010-11).</span>
 193       Exploits a subset of "complete_rg" λδ as the intermediate language.
 194       Features importation from ".hln" files containing λδ textual syntax.
 195       The overall validation speed of the "Grundlagen der Analysis"
 196       increases of 22% with respect to version 0.8.0.
 197       [Svn revision: 11032] (<a href="http://lambdadelta.info/download/helena_0.8.1.tar.gz">archived source code</a>)
 198       <ul>
 199           <li>
 200          A <a href="http://www.jedsoft.org/jed/">Jed mode</a>
 201          for editing ".hln" files (containing λδ textual syntax):
 202          <a href="http://lambdadelta.info/download/helena.sl">helena.sl</a>
 203          (revised <span class="date">2010-11</span>).
 204       </li>
 205           <li>
 206          <span class="date">2009-12.</span>
 207          Helena appears in F. Wiedijk's
 208          <a href="http://www.cs.ru.nl/%7Efreek/digimath/index.html#helena">
 209             index of computer math systems</a>.
 210       </li>
 211         </ul>
 212    </li>
 213     </ul>
 214    <ul xmlns:ld="http://lambdadelta.info/">
 215       <li>
 216         <span class="date">Version 0.8.0 (2009-09).</span>
 217       Supports "basic_rg" λδ with naive implementation of impredicative sort inclusion.
 218       Features importation from <a href="http://www.win.tue.nl/automath/">Automath</a>
 219       and exportation to <a href="http://www.w3.org/XML/">XML</a>.
 220       <a href="http://lambdadelta.info/documentation.html#ldR4">Documentation (R4)</a>.
 221       [Svn revision: 10304] (<a href="http://lambdadelta.info/download/helena_0.8.0.tar.gz">archived source code</a>).
 222       <ul>
 223           <li>
 224          A <a href="http://www.jedsoft.org/jed/">Jed mode</a>
 225          for editing ".aut" files
 226          (containing <a href="http://www.win.tue.nl/automath/">Automath</a> textual syntax):
 227          <a href="http://lambdadelta.info/download/automath.sl">automath.sl</a>
 228          (revised <span class="date">2008-07</span>).
 229       </li>
 230           <li>
 231          <span class="date">2009-09.</span>
 232          Jutting's specification of Landau's "Grundlagen der Analysis"
 233          enters λδ Digital Library.
 234       </li>
 235           <li>
 236          <span class="date">2009-06.</span>
 237          Jutting's specification of Landau's "Grundlagen der Analysis"
 238          is successfully processed, enabling sort inclusion.
 239       </li>
 240         </ul>
 241    </li>
 242     </ul>
 243    <div class="spacer">
 244       <img class="rule" alt="[Spacer]" title="lambdadelta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
 245     </div>
 246     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
 247       <br />
 248     </div>
 249     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
 250       <a href="http://validator.w3.org/check?uri=referer">
 251         <img class="w3c" alt="[Valid XHTML 1.1]" title="Valid XHTML 1.1" src="http://www.w3.org/Icons/valid-xhtml11-blue" />
 252       </a>
 253       <a href="http://jigsaw.w3.org/css-validator/check/referer">
 254         <img class="w3c" alt="[Valid CSS level 2]" title="Valid CSS level 2" src="http://www.w3.org/Icons/valid-css2-blue" />
 255       </a>
 256       <a href="http://www.w3.org/XML/">
 257         <img class="w3c" alt="[Generated from XML via XSL]" title="Generated from XML via XSL" src="http://lambdadelta.info/images/xml_xsl2.png" />
 258       </a>
 259       <a href="http://www.w3.org/Graphics/PNG/">
 260         <img class="w3c" alt="[PNG used here]" title="PNG used here" src="http://lambdadelta.info/images/PNGnow2.png" />
 261       </a>
 262       <a href="http://www.anybrowser.org/campaign/">
 263         <img class="w3c" alt="[Viewable with any browser]" title="Viewable with any browser" src="http://www.anybrowser.org/campaign/bvgraphics/abtfile.png" />
 264       </a>
 265     </div>
 266     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
 267       <br />
 268     </div>
 269     <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Sun, 05 Oct 2014 16:38:32 +0200</div>
 270 </body>
 271 </html>