helm/www/lambdadelta/news.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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  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/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 delta">March 2015.</span>
 111       The specification of λδ version 1 is validated by
 112       <a href="http://matita.cs.unibo.it/">Matita 0.99.2</a>.
 113    </li>
 114     </ul>
 115     <ul xmlns:ld="http://lambdadelta.info/">
 116       <li>
 117         <span class="emph gamma">February 2015.</span>
 118         <a href="http://lambdadelta.info/implementation.html#v2">"Helena 0.8.2"</a> is updated.
 119       <ul>
 120           <li>
 121          The translated specification of Landau's "Grundlagen der Analysis"
 122          is validated in λC by <a href="http://coq.inria.fr/">Coq 8.4.3</a>.
 123       </li>
 124         </ul>
 125       </li>
 126     </ul>
 127     <ul xmlns:ld="http://lambdadelta.info/">
 128       <li>
 129         <span class="emph delta">January 2015.</span>
 130       The specification of <a href="http://lambdadelta.info/specification.html#v1">λδ version 1</a>
 131       is updated with backports from the abandoned specification of λδ version 2.
 132    </li>
 133     </ul>
 134     <ul xmlns:ld="http://lambdadelta.info/">
 135       <li>
 136         <span class="emph gamma">December 2014.</span>
 137         <a href="http://lambdadelta.info/implementation.html#v2">"Helena 0.8.2"</a> is released.
 138       <ul>
 139           <li>
 140          The corrected specification of Landau's "Grundlagen der Analysis"
 141          is validated in λδ version 3.
 142       </li>
 143         </ul>
 144       </li>
 145     </ul>
 146     <ul xmlns:ld="http://lambdadelta.info/">
 147       <li>
 148         <span class="emph gamma">October 2014.</span>
 149         <a href="http://lambdadelta.info/documentation.html#ldJ2a">λδ version 2A</a>
 150       is released.
 151    </li>
 152     </ul>
 153     <ul xmlns:ld="http://lambdadelta.info/">
 154       <li>
 155         <span class="emph beta">July 2014.</span>
 156       A new version of this site is online.
 157    </li>
 158     </ul>
 159     <ul xmlns:ld="http://lambdadelta.info/">
 160       <li>
 161         <span class="emph beta">June 2014.</span>
 162         <a href="http://lambdadelta.info/documentation.html#ldP2c">First communication on λδ version 2.</a>
 163       </li>
 164     </ul>
 165     <ul xmlns:ld="http://lambdadelta.info/">
 166       <li>
 167         <span class="emph alpha">December 2012.</span>
 168       The character "_" is removed from the denomination "lambda_delta":
 169       <ul>
 170           <li>
 171          The denomination "\lambda\delta" is used in λδ-related texts.
 172       </li>
 173           <li>
 174          The denomination "lambdadelta" is used in λδ-related identifiers.
 175       </li>
 176           <li>
 177          Permanent λδ URL acquired:
 178          <a href="http://lambdadelta.info/">http://lambdadelta.info/</a>
 179          (pointing at this site).
 180       </li>
 181         </ul>
 182       </li>
 183     </ul>
 184     <ul xmlns:ld="http://lambdadelta.info/">
 185       <li>
 186         <span class="emph alpha">September 2011.</span>
 187       The denomination "lambda-delta" changes to "lambda_delta":
 188       <ul>
 189           <li>
 190          The character "-" is reserved in λδ textual syntax
 191          (recognized by "Helena 0.8.1").
 192       </li>
 193           <li>
 194          Eventually, the occurrences of the character "-"
 195          will be replaced by "_" in all λδ-related identifiers.
 196       </li>
 197           <li>
 198          In particular, this refactoring involves file names and path names.
 199       </li>
 200         </ul>
 201       </li>
 202     </ul>
 203     <ul xmlns:ld="http://lambdadelta.info/">
 204       <li>
 205         <span class="emph alpha">April 2011.</span>
 206       The specification of <a href="http://lambdadelta.info/specification.html#v2">λδ version 2</a>
 207       and related topics is restarted in
 208       <a href="http://matita.cs.unibo.it/">Matita 0.5</a>.
 209    </li>
 210     </ul>
 211     <ul xmlns:ld="http://lambdadelta.info/">
 212       <li>
 213         <span class="emph delta">February 2011.</span>
 214       The specification of λδ version 2 with Coq 7.3.1 is abandoned.
 215    </li>
 216     </ul>
 217     <ul xmlns:ld="http://lambdadelta.info/">
 218       <li>
 219         <span class="emph alpha">December 2010.</span>
 220       Transient λδ URL acquired: http://lambda-delta.info/ (expires on December 2012).
 221    </li>
 222     </ul>
 223     <ul xmlns:ld="http://lambdadelta.info/">
 224       <li>
 225         <span class="emph beta">November 2010.</span>
 226         <a href="http://lambdadelta.info/implementation.html#v1">"Helena 0.8.1"</a> is released.
 227    </li>
 228     </ul>
 229     <ul xmlns:ld="http://lambdadelta.info/">
 230       <li>
 231         <span class="emph beta">September 2009.</span>
 232         <a href="http://lambdadelta.info/implementation.html#v0">"Helena 0.8.0"</a> is released and the
 233       <a href="http://lambdadelta.info/implementation.html#lddl">λδ Digital Library</a> is started.
 234    </li>
 235     </ul>
 236     <ul xmlns:ld="http://lambdadelta.info/">
 237       <li>
 238         <span class="emph alpha">June 2009.</span>
 239       "Helena", a <a href="http://lambdadelta.info/implementation.html#helena">validator for λδ version 2</a>,
 240       is available as a part of the <a href="http://helm.cs.unibo.it/">HELM</a> software.
 241    </li>
 242     </ul>
 243     <ul xmlns:ld="http://lambdadelta.info/">
 244       <li>
 245         <span class="emph alpha">September 2008.</span>
 246       This site is online.
 247    </li>
 248     </ul>
 249     <ul xmlns:ld="http://lambdadelta.info/">
 250       <li>
 251         <span class="emph delta">July 2008.</span>
 252         <a href="http://lambdadelta.info/documentation.html#ldJ1">First journal paper on λδ</a>
 253       accepted for publication.
 254    </li>
 255     </ul>
 256     <ul xmlns:ld="http://lambdadelta.info/">
 257       <li>
 258         <span class="emph delta">July 2008.</span>
 259       First <a href="http://helm.cs.unibo.it/procedural/">procedural reconstruction</a>
 260       for <a href="http://matita.cs.unibo.it/">Matita 0.5</a>
 261       of the λδ version 1 for Coq 7.3.1.
 262    </li>
 263     </ul>
 264     <ul xmlns:ld="http://lambdadelta.info/">
 265       <li>
 266         <span class="emph delta">June 2008.</span>
 267       The <a href="http://lambdadelta.info/specification.html#static1">
 268          HTML pages of the specification of λδ version 1 for Matita 0.5</a>
 269       are online.
 270    </li>
 271     </ul>
 272     <ul xmlns:ld="http://lambdadelta.info/">
 273       <li>
 274         <span class="emph delta">May 2008.</span>
 275       The specification of λδ version 1 is concluded.
 276    </li>
 277     </ul>
 278     <ul xmlns:ld="http://lambdadelta.info/">
 279       <li>
 280         <span class="emph alpha">March 2008.</span>
 281       The specification of λδ version 2 is started with Coq 7.3.1 (false start).
 282    </li>
 283     </ul>
 284     <ul xmlns:ld="http://lambdadelta.info/">
 285       <li>
 286         <span class="emph gamma">September 2007.</span>
 287       The <a href="http://lambdadelta.info/specification.html#dynamic1">
 288          specification of λδ version 1 for Matita 0.4</a>
 289       is online.
 290    </li>
 291     </ul>
 292     <ul xmlns:ld="http://lambdadelta.info/">
 293       <li>
 294         <span class="emph gamma">November 2006.</span>
 295         <a href="http://lambdadelta.info/documentation.html#ldR1b">λδ version 1</a>
 296       is released.
 297    </li>
 298     </ul>
 299     <ul xmlns:ld="http://lambdadelta.info/">
 300       <li>
 301         <span class="emph beta">December 2005.</span>
 302         <a href="http://lambdadelta.info/documentation.html#ldP1a">First communication on λδ version 1</a>.
 303    </li>
 304     </ul>
 305     <ul xmlns:ld="http://lambdadelta.info/">
 306       <li>
 307         <span class="emph alpha">May 2004.</span>
 308       The specification of <a href="http://lambdadelta.info/specification.html#v1">λδ version 1</a>
 309       is started with Coq 7.3.1.
 310    </li>
 311     </ul>
 312     <!-- ===================================================================== -->
 313     <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" />
 314     </div>
 315     <ul xmlns:ld="http://lambdadelta.info/">
 316       <li>
 317         <span class="emph alpha">June 2014.</span>
 318       The <a href="http://www.google.com/">Google</a>
 319       search for "formal system lambda delta" gives
 320       5 resources about λδ in the first 6 results.
 321    </li>
 322     </ul>
 323     <ul xmlns:ld="http://lambdadelta.info/">
 324       <li>
 325         <span class="emph alpha">June 2014.</span>
 326       The <a href="http://www.yahoo.com/">Yahoo</a>
 327       search for "formal system lambda delta" gives
 328       4 resources about λδ in the first 5 results.
 329    </li>
 330     </ul>
 331     <div class="spacer">
 332       <img class="rule" alt="[Spacer]" title="lambdadelta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
 333     </div>
 334     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
 335       <br />
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 344       <a href="http://www.w3.org/XML/">
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 347       <a href="http://www.w3.org/Graphics/PNG/">
 348         <img class="w3c" alt="[PNG used here]" title="PNG used here" src="http://lambdadelta.info/images/PNGnow2.png" />
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 350       <a href="http://www.anybrowser.org/campaign/">
 351         <img class="w3c" alt="[Viewable with any browser]" title="Viewable with any browser" src="http://www.anybrowser.org/campaign/bvgraphics/abtfile.png" />
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 353     </div>
 354     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
 355       <br />
 356     </div>
 357     <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 06 Mar 2015 17:53:24 +0100</div>
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