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 Systems of the λδ (\lambda\delta) Family</div>
  23     <div class="spacer">
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  27       <br />
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  30       <table cellpadding="4" cellspacing="0">
  31         <tbody>
  32           <tr>
  33             <td class="snns capitalize italic sky">
  34               <a href="http://lambdadelta.info/home.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 white">
  40               <a href="http://lambdadelta.info/specification.html">specification</a>
  41             </td>
  42             <td class="snnn capitalize italic white">
  43               <br />
  44             </td>
  45             <td class="snnn capitalize italic white">
  46               <br />
  47             </td>
  48             <td class="snns capitalize italic orange">
  49               <a href="http://lambdadelta.info/documentation.html">documentation</a>
  50             </td>
  51             <td class="snns capitalize italic green">
  52               <a href="http://lambdadelta.info/implementation.html">implementation</a>
  53             </td>
  54             <td class="ssnn capitalize italic green">
  55               <br />
  56             </td>
  57           </tr>
  58           <tr>
  59             <td class="snns capitalize sky">
  60               <a href="http://lambdadelta.info/home.html#foreword">foreword</a>
  61             </td>
  62             <td class="snns capitalize magenta">
  63               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
  64             </td>
  65             <td class="snns capitalize white">
  66               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
  67             </td>
  68             <td class="snnn capitalize white">(<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>
  69             <td class="snnn capitalize white">
  70               <br />
  71             </td>
  72             <td class="snns capitalize orange">
  73               <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
  74             </td>
  75             <td class="snns capitalize green">
  76               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
  77             </td>
  78             <td class="ssnn capitalize green">
  79               <a href="http://lambdadelta.info/osn/">Open Symbolic Notation (OSN)</a>
  80             </td>
  81           </tr>
  82           <tr>
  83             <td class="snss capitalize sky">
  84               <a href="http://lambdadelta.info/home.html#citations">citations</a>
  85             </td>
  86             <td class="snss capitalize magenta">
  87               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
  88             </td>
  89             <td class="snss capitalize white">
  90               <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
  91             </td>
  92             <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
  93             <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
  94             <td class="snss capitalize orange">
  95               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
  96             </td>
  97             <td class="snss capitalize green">
  98               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
  99             </td>
 100             <td class="sssn capitalize green">(<a href="http://lambdadelta.info/static/lddl/">static LDDL directory</a>)</td>
 101           </tr>
 102         </tbody>
 103       </table>
 104     </div>
 105     <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="tools">Tools <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b5.png" />
 106     </div>
 107     <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="osn">
 108       <a href="http://lambdadelta.info/osn/">
 109         <img class="w3c" alt="[Open Symbolic Notation logo]" title="OSN: Open Symbolic Notation" src="http://lambdadelta.info/images/osn_label.png" />
 110       </a> Open Symbolic Notation</div>
 111     <div xmlns:ld="http://lambdadelta.info/" class="text">
 112       Open Symbolic Notation, abbreviated OSN,
 113       is an easy and flexible data-interchange text format
 114       intended for the lightweight representation of
 115       generic abstract syntax trees in the domain of formal languages.
 116       Additional information is available at <a href="http://lambdadelta.info/osn/">OSN web site</a>.
 117    </div>
 118     <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="helena">
 119       <img class="icon32" alt="[Helena logo]" title="Helena" src="http://lambdadelta.info/images/helena_32.png" /> Helena</div>
 120     <div xmlns:ld="http://lambdadelta.info/" class="text">
 121       Helena is a processor for the systems of the λδ family,
 122       implemented in <a href="http://caml.inria.fr/">Caml</a>
 123       as a part of the <a href="http://helm.cs.unibo.it/">HELM</a> software,
 124       meant for testing both their stable and unstable features.
 125    </div>
 126     <div xmlns:ld="http://lambdadelta.info/" class="text">
 127       The processor source code is available in the directory
 128       <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>
 129       of the <a href="http://helm.cs.unibo.it/software/index.html">HELM Svn repository</a>.
 130       The Svn revisions containing the stable versions of Helena are indicated next.
 131    </div>
 132     <ul xmlns:ld="http://lambdadelta.info/" id="v3">
 133       <li>
 134         <span class="emph gamma">Version 0.8.3 (2015-12).</span>
 135       Supports exportation to λProlog
 136       (two formats for ELPI,
 137       and two formats for <a href="http://teyjus.cs.umn.edu/">Teyjus</a>).
 138       Employs optimized conditional compilation through
 139       <a href="http://camlp5.gforge.inria.fr/">camlp5</a> code preprocessor (pa_macro)
 140       to reduce a performance loss, which is expected to disappear
 141       by employing a different code preprocessor.
 142       Overall validation speed of the "Grundlagen der Analysis" with respect to version 0.8.2:
 143       +3% with optimized compilation, +5% without optimized compilation.
 144       [Svn revision: 13108] (<a href="http://lambdadelta.info/download/helena_0.8.3.tar.gz">archived source code</a>).
 145       <ul>
 146           <li class="">
 147             <span class="emph gamma">2015-06.</span>
 148          The corrected specification of Landau's "Grundlagen der Analysis"
 149          is successfully validated in a λProlog implementation of λδ version 3.
 150       </li>
 151         </ul>
 152       </li>
 153     </ul>
 154     <ul xmlns:ld="http://lambdadelta.info/" id="v2">
 155       <li>
 156         <span class="emph gamma">Version 0.8.2 (2015-02).</span>
 157       Uses λδ version 3 with layer variables as core language.
 158       Supports exportation to Gallina
 159       (the specification language of <a href="http://coq.inria.fr/">Coq</a>),
 160       and to Grafite
 161       (the specification language of <a href="http://matita.cs.unibo.it/">Matita</a>).
 162       The overall validation speed of the "Grundlagen der Analysis"
 163       increases of 34% with respect to version 0.8.1.
 164       <a href="http://lambdadelta.info/documentation.html#ldJ3a">Documentation (J3a)</a>.
 165       [Svn revision: 13035] (<a href="http://lambdadelta.info/download/helena_0.8.2.tar.gz">archived source code</a>).
 166       <ul>
 167           <li class="">
 168          The specification of Landau's "Grundlagen der Analysis"
 169          for <a href="http://coq.inria.fr/">Coq 8</a>:
 170          <a href="http://lambdadelta.info/download/grundlagen_2.v">grundlagen_2.v</a>
 171          (revised <span class="emph gamma">2015-02</span>).
 172       </li>
 173           <li class="">
 174          The specification of Landau's "Grundlagen der Analysis"
 175          for <a href="http://matita.cs.unibo.it/">Matita 0.99.2</a>:
 176          <a href="http://lambdadelta.info/download/grundlagen_2.tar.bz2">grundlagen_2.tar.bz2</a>
 177          (revised <span class="emph gamma">2015-02</span>).
 178       </li>
 179           <li class="">
 180          The corrected specification of Landau's "Grundlagen der Analysis":
 181          <a href="http://lambdadelta.info/download/grundlagen_2.aut">grundlagen_2.aut</a>
 182          (revised <span class="emph gamma">2014-12</span>).
 183       </li>
 184           <li class="">
 185             <span class="emph gamma">2015-02.</span>
 186          The translated specification of Landau's "Grundlagen der Analysis"
 187          is successfully validated in CC by <a href="http://coq.inria.fr/">Coq 8.4.3</a>.
 188       </li>
 189           <li class="">
 190             <span class="emph gamma">2014-12.</span>
 191          The corrected specification of Landau's "Grundlagen der Analysis"
 192          is successfully validated in λδ version 3.
 193       </li>
 194         </ul>
 195       </li>
 196     </ul>
 197     <ul xmlns:ld="http://lambdadelta.info/" id="v1">
 198       <li>
 199         <span class="emph beta">Version 0.8.1 (2010-11).</span>
 200       Uses a subset of λδ version 4 as intermediate language.
 201       Features importation from ".hln" files containing λδ textual syntax.
 202       The overall validation speed of the "Grundlagen der Analysis"
 203       increases of 22% with respect to version 0.8.0.
 204       [Svn revision: 11032] (<a href="http://lambdadelta.info/download/helena_0.8.1.tar.gz">archived source code</a>).
 205       <ul>
 206           <li class="">
 207          A <a href="http://www.jedsoft.org/jed/">Jed mode</a>
 208          for editing ".hln" files (containing λδ textual syntax):
 209          <a href="http://lambdadelta.info/download/helena.sl">helena.sl</a>
 210          (revised <span class="emph alpha">2010-11</span>).
 211       </li>
 212           <li class="">
 213             <span class="emph beta">2009-12.</span>
 214          Helena appears in F. Wiedijk's
 215          <a href="http://www.cs.ru.nl/%7Efreek/digimath/index.html#helena">
 216             index of computer math systems</a>.
 217       </li>
 218         </ul>
 219       </li>
 220     </ul>
 221     <ul xmlns:ld="http://lambdadelta.info/" id="v0">
 222       <li>
 223         <span class="emph beta">Version 0.8.0 (2009-09).</span>
 224       Supports λδ version 2 with naive implementation of impredicative sort inclusion.
 225       Features importation from <a href="http://www.win.tue.nl/automath/">Automath</a>
 226       and exportation to <a href="http://www.w3.org/XML/">XML</a>.
 227       <a href="http://lambdadelta.info/documentation.html#ldR2a">Documentation (R2a)</a>.
 228       [Svn revision: 10304] (<a href="http://lambdadelta.info/download/helena_0.8.0.tar.gz">archived source code</a>).
 229       <ul>
 230           <li class="">
 231          A <a href="http://www.jedsoft.org/jed/">Jed mode</a>
 232          for editing ".aut" files
 233          (containing <a href="http://www.win.tue.nl/automath/">Automath</a> textual syntax):
 234          <a href="http://lambdadelta.info/download/automath.sl">automath.sl</a>
 235          (revised <span class="emph gamma">2008-07</span>).
 236       </li>
 237           <li class="">
 238             <span class="emph beta">2009-09.</span>
 239          Jutting's specification of Landau's "Grundlagen der Analysis"
 240          enters λδ Digital Library.
 241       </li>
 242           <li class="">
 243             <span class="emph beta">2009-06.</span>
 244          Jutting's specification of Landau's "Grundlagen der Analysis"
 245          is successfully processed, enabling sort inclusion.
 246       </li>
 247         </ul>
 248       </li>
 249     </ul>
 250     <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="lddl">
 251       <img class="icon32" alt="[\lambda\delta digital library logo]" title="LDDL: \lambda\delta digital library" src="http://lambdadelta.info/images/crux_32.png" /> λδ Digital Library (LDDL)</div>
 252     <div xmlns:ld="http://lambdadelta.info/" class="text">
 253       The λδ Digital Library is part of <a href="http://helm.cs.unibo.it/">HELM</a>
 254       and contains resources expressed in the systems of the λδ family.
 255    </div>
 256     <ul xmlns:ld="http://lambdadelta.info/" id="contents">
 257       <li>
 258         <span class="emph alpha">Contents:</span>
 259       Landau's "Grundlagen der Analysis"
 260       (from Jutting's specification in  <a href="http://www.win.tue.nl/automath/">Automath</a>).
 261    </li>
 262     </ul>
 263     <ul xmlns:ld="http://lambdadelta.info/" id="access">
 264       <li>
 265         <span class="emph alpha">Access:</span>
 266         <a href="http://lambdadelta.info/static/lddl/">static pages</a> (updated <span class="emph gamma">2015-01</span>),
 267       <a href="http://lambdadelta.info/download/lddl.tar.bz2">data set</a> (updated <span class="emph gamma">2014-12</span>),
 268       <a href="http://lambdadelta.info/xml/">HELM server URL</a> (updated <span class="emph gamma">2014-12</span>).
 269    </li>
 270     </ul>
 271     <ul xmlns:ld="http://lambdadelta.info/" id="examples">
 272       <li>
 273         <span class="emph alpha">Examples:</span>
 274         <a href="http://lambdadelta.info/static/lddl/Environment/grundlagen_2/l/e/st/eq/landau/n/rt/rp/r/c/8283/t234.ld.html">
 275          Grundlagen's definition "t234"</a>
 276       in λδ version 4.
 277    </li>
 278     </ul>
 279     <div class="spacer">
 280       <img class="rule" alt="[Spacer]" title="\lambda\delta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
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 305     <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 24 Nov 2017 21:00:00 +0100</div>
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