helm/www/lambdadelta/news.html

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   8     <meta name="author" content="Ferruccio Guidi" />
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  22     <div class="head1">The Formal System λδ (\lambda\delta)</div>
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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/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/specification.html">specification</a>
  44             </td>
  45             <td class="snnn capitalize italic green">
  46               <br />
  47             </td>
  48             <td class="snnn capitalize italic green">
  49               <br />
  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/index.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 orange">
  66               <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
  67             </td>
  68             <td class="snns capitalize green">
  69               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
  70             </td>
  71             <td class="snnn capitalize 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>
  72             <td class="snnn capitalize green">
  73               <br />
  74             </td>
  75             <td class="snns capitalize green">
  76               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
  77             </td>
  78             <td class="ssnn capitalize green">(<a href="http://lambdadelta.info/static/lddl/">static LDDL directory</a>)</td>
  79           </tr>
  80           <tr>
  81             <td class="snss capitalize sky">
  82               <a href="http://lambdadelta.info/index.html#citations">citations</a>
  83             </td>
  84             <td class="snss capitalize magenta">
  85               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
  86             </td>
  87             <td class="snss capitalize orange">
  88               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
  89             </td>
  90             <td class="snss capitalize green">
  91               <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
  92             </td>
  93             <td class="snsn capitalize green">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
  94             <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
  95             <td class="snss capitalize green">
  96               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
  97             </td>
  98             <td class="sssn capitalize green">
  99               <br />
 100             </td>
 101           </tr>
 102         </tbody>
 103       </table>
 104     </div>
 105     <!-- ===================================================================== -->
 106     <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="milestones">Milestones <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b3.png" />
 107     </div>
 108     <ul xmlns:ld="http://lambdadelta.info/">
 109       <li>
 110         <span class="emph gamma">February 2015.</span>
 111         <a href="http://lambdadelta.info/implementation.html#v2">"Helena 0.8.2"</a> is updated.
 112       <ul>
 113           <li>
 114          The translated specification of Landau's "Grundlagen der Analysis"
 115          is validated in λC by <a href="http://coq.inria.fr/">Coq 8.4.3</a>.
 116       </li>
 117         </ul>
 118       </li>
 119     </ul>
 120     <ul xmlns:ld="http://lambdadelta.info/">
 121       <li>
 122         <span class="emph delta">January 2015.</span>
 123       The specification of <a href="http://lambdadelta.info/specification.html#v1">λδ version 1</a>
 124       is updated with backports from the abandoned specification of λδ version 2.
 125    </li>
 126     </ul>
 127     <ul xmlns:ld="http://lambdadelta.info/">
 128       <li>
 129         <span class="emph gamma">December 2014.</span>
 130         <a href="http://lambdadelta.info/implementation.html#v2">"Helena 0.8.2"</a> is released.
 131       <ul>
 132           <li>
 133          The corrected specification of Landau's "Grundlagen der Analysis"
 134          is validated in λδ version 3.
 135       </li>
 136         </ul>
 137       </li>
 138     </ul>
 139     <ul xmlns:ld="http://lambdadelta.info/">
 140       <li>
 141         <span class="emph gamma">October 2014.</span>
 142         <a href="http://lambdadelta.info/documentation.html#ldJ2">λδ version 2A</a>
 143       is released.
 144    </li>
 145     </ul>
 146     <ul xmlns:ld="http://lambdadelta.info/">
 147       <li>
 148         <span class="emph beta">July 2014.</span>
 149       A new version of this site is online.
 150    </li>
 151     </ul>
 152     <ul xmlns:ld="http://lambdadelta.info/">
 153       <li>
 154         <span class="emph beta">June 2014.</span>
 155         <a href="http://lambdadelta.info/documentation.html#ldP8">First communication on λδ version 2.</a>
 156       </li>
 157     </ul>
 158     <ul xmlns:ld="http://lambdadelta.info/">
 159       <li>
 160         <span class="emph alpha">December 2012.</span>
 161       The character "_" is removed from the denomination "lambda_delta":
 162       <ul>
 163           <li>
 164          The denomination "\lambda\delta" is used in λδ-related texts.
 165       </li>
 166           <li>
 167          The denomination "lambdadelta" is used in λδ-related identifiers.
 168       </li>
 169           <li>
 170          Permanent λδ URL acquired:
 171          <a href="http://lambdadelta.info/">http://lambdadelta.info/</a>
 172          (pointing at this site).
 173       </li>
 174         </ul>
 175       </li>
 176     </ul>
 177     <ul xmlns:ld="http://lambdadelta.info/">
 178       <li>
 179         <span class="emph alpha">September 2011.</span>
 180       The denomination "lambda-delta" changes to "lambda_delta":
 181       <ul>
 182           <li>
 183          The character "-" is reserved in λδ textual syntax
 184          (recognized by "Helena 0.8.1").
 185       </li>
 186           <li>
 187          Eventually, the occurrences of the character "-"
 188          will be replaced by "_" in all λδ-related identifiers.
 189       </li>
 190           <li>
 191          In particular, this refactoring involves file names and path names.
 192       </li>
 193         </ul>
 194       </li>
 195     </ul>
 196     <ul xmlns:ld="http://lambdadelta.info/">
 197       <li>
 198         <span class="emph alpha">April 2011.</span>
 199       The specification of <a href="http://lambdadelta.info/specification.html#v2">λδ version 2</a>
 200       and related topics is restarted in
 201       <a href="http://matita.cs.unibo.it/">Matita 0.5</a>.
 202    </li>
 203     </ul>
 204     <ul xmlns:ld="http://lambdadelta.info/">
 205       <li>
 206         <span class="emph delta">February 2011.</span>
 207       The specification of λδ version 2 with Coq 7.3.1 is abandoned.
 208    </li>
 209     </ul>
 210     <ul xmlns:ld="http://lambdadelta.info/">
 211       <li>
 212         <span class="emph alpha">December 2010.</span>
 213       Transient λδ URL acquired: http://lambda-delta.info/ (expires on December 2012).
 214    </li>
 215     </ul>
 216     <ul xmlns:ld="http://lambdadelta.info/">
 217       <li>
 218         <span class="emph beta">November 2010.</span>
 219         <a href="http://lambdadelta.info/implementation.html#v1">"Helena 0.8.1"</a> is released.
 220    </li>
 221     </ul>
 222     <ul xmlns:ld="http://lambdadelta.info/">
 223       <li>
 224         <span class="emph beta">September 2009.</span>
 225         <a href="http://lambdadelta.info/implementation.html#v0">"Helena 0.8.0"</a> is released and the
 226       <a href="http://lambdadelta.info/implementation.html#lddl">λδ Digital Library</a> is started.
 227    </li>
 228     </ul>
 229     <ul xmlns:ld="http://lambdadelta.info/">
 230       <li>
 231         <span class="emph alpha">June 2009.</span>
 232       "Helena", a <a href="http://lambdadelta.info/implementation.html#helena">validator for λδ version 2</a>,
 233       is available as a part of the <a href="http://helm.cs.unibo.it/">HELM</a> software.
 234    </li>
 235     </ul>
 236     <ul xmlns:ld="http://lambdadelta.info/">
 237       <li>
 238         <span class="emph alpha">September 2008.</span>
 239       This site is online.
 240    </li>
 241     </ul>
 242     <ul xmlns:ld="http://lambdadelta.info/">
 243       <li>
 244         <span class="emph delta">July 2008.</span>
 245         <a href="http://lambdadelta.info/documentation.html#ldJ1">First journal paper on λδ</a>
 246       accepted for publication.
 247    </li>
 248     </ul>
 249     <ul xmlns:ld="http://lambdadelta.info/">
 250       <li>
 251         <span class="emph delta">July 2008.</span>
 252       First <a href="http://helm.cs.unibo.it/procedural/">procedural reconstruction</a>
 253       for <a href="http://matita.cs.unibo.it/">Matita 0.5</a>
 254       of the λδ version 1 for Coq 7.3.1.
 255    </li>
 256     </ul>
 257     <ul xmlns:ld="http://lambdadelta.info/">
 258       <li>
 259         <span class="emph delta">June 2008.</span>
 260       The <a href="http://lambdadelta.info/specification.html#static1">
 261          HTML pages of the specification of λδ version 1 for Matita 0.5</a>
 262       are online.
 263    </li>
 264     </ul>
 265     <ul xmlns:ld="http://lambdadelta.info/">
 266       <li>
 267         <span class="emph delta">May 2008.</span>
 268       The specification of λδ version 1 is concluded.
 269    </li>
 270     </ul>
 271     <ul xmlns:ld="http://lambdadelta.info/">
 272       <li>
 273         <span class="emph alpha">March 2008.</span>
 274       The specification of λδ version 2 is started with Coq 7.3.1 (false start).
 275    </li>
 276     </ul>
 277     <ul xmlns:ld="http://lambdadelta.info/">
 278       <li>
 279         <span class="emph gamma">September 2007.</span>
 280       The <a href="http://lambdadelta.info/specification.html#dynamic1">
 281          specification of λδ version 1 for Matita 0.4</a>
 282       is online.
 283    </li>
 284     </ul>
 285     <ul xmlns:ld="http://lambdadelta.info/">
 286       <li>
 287         <span class="emph gamma">November 2006.</span>
 288         <a href="http://lambdadelta.info/documentation.html#ldR2">λδ version 1</a>
 289       is released.
 290    </li>
 291     </ul>
 292     <ul xmlns:ld="http://lambdadelta.info/">
 293       <li>
 294         <span class="emph beta">December 2005.</span>
 295         <a href="http://lambdadelta.info/documentation.html#ldP1">First communication on λδ version 1</a>.
 296    </li>
 297     </ul>
 298     <ul xmlns:ld="http://lambdadelta.info/">
 299       <li>
 300         <span class="emph alpha">May 2004.</span>
 301       The specification of <a href="http://lambdadelta.info/specification.html#v1">λδ version 1</a>
 302       is started with Coq 7.3.1.
 303    </li>
 304     </ul>
 305     <!-- ===================================================================== -->
 306     <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="visibility">Visibility <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b3.png" />
 307     </div>
 308     <ul xmlns:ld="http://lambdadelta.info/">
 309       <li>
 310         <span class="emph alpha">June 2014.</span>
 311       The <a href="http://www.google.com/">Google</a>
 312       search for "formal system lambda delta" gives
 313       5 resources about λδ in the first 6 results.
 314    </li>
 315     </ul>
 316     <ul xmlns:ld="http://lambdadelta.info/">
 317       <li>
 318         <span class="emph alpha">June 2014.</span>
 319       The <a href="http://www.yahoo.com/">Yahoo</a>
 320       search for "formal system lambda delta" gives
 321       4 resources about λδ in the first 5 results.
 322    </li>
 323     </ul>
 324     <div class="spacer">
 325       <img class="rule" alt="[Spacer]" title="lambdadelta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
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 337       <a href="http://www.w3.org/XML/">
 338         <img class="w3c" alt="[Generated from XML via XSL]" title="Generated from XML via XSL" src="http://lambdadelta.info/images/xml_xsl2.png" />
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 343       <a href="http://www.anybrowser.org/campaign/">
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 345       </a>
 346     </div>
 347     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
 348       <br />
 349     </div>
 350     <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Sat, 21 Feb 2015 23:49:14 +0100</div>
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