helm/www/lambdadelta/news.html

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   3 <html xmlns="http://www.w3.org/1999/xhtml" xmlns:ld="http://lambdadelta.info/" dir="ltr" lang="en-us"><head><meta http-equiv="Content-Language" content="en-us"/><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/><meta http-equiv="Content-Style-Type" content="text/css"/><meta name="author" content="Ferruccio Guidi"/><meta name="description" content="\lambda\delta home page"/><title>\lambda\delta home page</title><link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/ld_web.css"/><link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/lddl.css"/><link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/xhtbl.css"/><link rel="shortcut icon" href="http://lambdadelta.info/images/crux_16.ico"/></head><body lang="en-US"><div class="spacer"><a href="http://lambdadelta.info/"><img class="icon32" alt="[\lambda\delta home]" title="\lambda\delta home" src="http://lambdadelta.info/images/crux_32.png"/></a></div><div class="head1">The Formal Systems of the λδ (\lambda\delta) Family</div><div class="spacer"><img class="rule" alt="[Spacer]" title="\lambda\delta rainbow rule" src="http://lambdadelta.info/images/rainbow.png"/></div><div class="spacer"><br/></div><div class="text"><table cellpadding="4" cellspacing="0"><tbody><tr><td class="snns capitalize italic sky"><a href="http://lambdadelta.info/home.html">home</a></td><td class="snns capitalize italic magenta"><a href="http://lambdadelta.info/news.html">news</a></td><td class="snns capitalize italic white"><a href="http://lambdadelta.info/specification.html">specification</a></td><td class="snnn capitalize italic white"><br/></td><td class="snnn capitalize italic white"><br/></td><td class="snns capitalize italic orange"><a href="http://lambdadelta.info/documentation.html">documentation</a></td><td class="snns capitalize italic green"><a href="http://lambdadelta.info/implementation.html">implementation</a></td><td class="ssnn capitalize italic green"><br/></td></tr><tr><td class="snns capitalize sky"><a href="http://lambdadelta.info/home.html#foreword">foreword</a></td><td class="snns capitalize magenta"><a href="http://lambdadelta.info/news.html#milestones">milestones</a></td><td class="snns capitalize white"><a href="http://lambdadelta.info/specification.html#v2">version 2</a></td><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><td class="snnn capitalize white"><br/></td><td class="snns capitalize orange"><a href="http://lambdadelta.info/documentation.html#v2">version 2</a></td><td class="snns capitalize green"><a href="http://lambdadelta.info/implementation.html#helena">helena</a></td><td class="ssnn capitalize green"><a href="http://lambdadelta.info/osn/">Open Symbolic Notation (OSN)</a></td></tr><tr><td class="snss capitalize sky"><a href="http://lambdadelta.info/home.html#citations">citations</a></td><td class="snss capitalize magenta"><a href="http://lambdadelta.info/news.html#visibility">visibility</a></td><td class="snss capitalize white"><a href="http://lambdadelta.info/specification.html#v1">version 1</a></td><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><td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td><td class="snss capitalize orange"><a href="http://lambdadelta.info/documentation.html#v1">version 1</a></td><td class="snss capitalize green"><a href="http://lambdadelta.info/implementation.html#lddl">library</a></td><td class="sssn capitalize green">(<a href="http://lambdadelta.info/static/lddl/">static LDDL directory</a>)</td></tr></tbody></table></div><!-- ===================================================================== --><div class="head2dx" id="milestones">Milestones <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b3.png"/></div><ul><li><span class="emph alpha">December 2015.</span><a href="http://lambdadelta.info/documentation.html#ldJ3a">Second journal paper on λδ</a>
   4       accepted for publication.
   5    </li></ul><ul><li><span class="emph gamma">December 2015.</span><a href="http://lambdadelta.info/implementation.html#v3">"Helena 0.8.3"</a> is released.
   6    </li></ul><ul><li><span class="emph delta">August 2015.</span>
   7       The specification of λδ version 2A1 is concluded.
   8    </li></ul><ul><li><span class="emph gamma">June 2015.</span>
   9       The corrected specification of Landau's "Grundlagen der Analysis"
  10       is validated in a λProlog implementation of λδ version 3.
  11    </li></ul><ul><li><span class="emph delta">March 2015.</span>
  12       The specification of λδ version 1 is validated by
  13       <a href="http://matita.cs.unibo.it/">Matita 0.99.2</a>.
  14    </li></ul><ul><li><span class="emph gamma">February 2015.</span><a href="http://lambdadelta.info/implementation.html#v2">"Helena 0.8.2"</a> is updated.
  15       <ul><li class="">
  16          The translated specification of Landau's "Grundlagen der Analysis"
  17          is validated in CC by <a href="http://coq.inria.fr/">Coq 8.4.3</a>.
  18       </li></ul></li></ul><ul><li><span class="emph delta">January 2015.</span>
  19       The specification of <a href="http://lambdadelta.info/specification.html#v1">λδ version 1</a>
  20       is updated with backports from the abandoned specification of λδ version 2.
  21    </li></ul><ul><li><span class="emph gamma">December 2014.</span><a href="http://lambdadelta.info/implementation.html#v2">"Helena 0.8.2"</a> is released.
  22       <ul><li class="">
  23          The corrected specification of Landau's "Grundlagen der Analysis"
  24          is validated in λδ version 3.
  25       </li></ul></li></ul><ul><li><span class="emph gamma">October 2014.</span><a href="http://lambdadelta.info/documentation.html#ldJ2a">λδ version 2A1</a>
  26       is released.
  27    </li></ul><ul><li><span class="emph beta">July 2014.</span>
  28       A new version of this site is online.
  29    </li></ul><ul><li><span class="emph beta">June 2014.</span><a href="http://lambdadelta.info/documentation.html#ldP2c">First communication on λδ version 2.</a></li></ul><ul><li><span class="emph alpha">December 2012.</span>
  30       The character "_" is removed from the denomination "lambda_delta":
  31       <ul><li class="">
  32          The denomination "\lambda\delta" is used in λδ-related texts.
  33       </li><li class="">
  34          The denomination "lambdadelta" is used in λδ-related identifiers.
  35       </li><li class="">
  36          Permanent λδ URL acquired:
  37          <a href="http://lambdadelta.info/">http://lambdadelta.info/</a>
  38          (pointing at this site).
  39       </li></ul></li></ul><ul><li><span class="emph alpha">September 2011.</span>
  40       The denomination "lambda-delta" changes to "lambda_delta":
  41       <ul><li class="">
  42          The character "-" is reserved in λδ textual syntax
  43          (recognized by "Helena 0.8.1").
  44       </li><li class="">
  45          Eventually, the occurrences of the character "-"
  46          will be replaced by "_" in all λδ-related identifiers.
  47       </li><li class="">
  48          In particular, this refactoring involves file names and path names.
  49       </li></ul></li></ul><ul><li><span class="emph alpha">April 2011.</span>
  50       The specification of <a href="http://lambdadelta.info/specification.html#v2">λδ version 2</a>
  51       and related topics is restarted in
  52       <a href="http://matita.cs.unibo.it/">Matita 0.5</a>.
  53    </li></ul><ul><li><span class="emph delta">February 2011.</span>
  54       The specification of λδ version 2 with Coq 7.3.1 is abandoned.
  55    </li></ul><ul><li><span class="emph alpha">December 2010.</span>
  56       Transient λδ URL acquired: http://lambda-delta.info/ (expires on December 2012).
  57    </li></ul><ul><li><span class="emph beta">November 2010.</span><a href="http://lambdadelta.info/implementation.html#v1">"Helena 0.8.1"</a> is released.
  58    </li></ul><ul><li><span class="emph beta">September 2009.</span><a href="http://lambdadelta.info/implementation.html#v0">"Helena 0.8.0"</a> is released and the
  59       <a href="http://lambdadelta.info/implementation.html#lddl">λδ Digital Library</a> is started.
  60    </li></ul><ul><li><span class="emph alpha">June 2009.</span>
  61       "Helena", a <a href="http://lambdadelta.info/implementation.html#helena">validator for λδ version 2</a>,
  62       is available as a part of the <a href="http://helm.cs.unibo.it/">HELM</a> software.
  63    </li></ul><ul><li><span class="emph alpha">September 2008.</span>
  64       This site is online.
  65    </li></ul><ul><li><span class="emph delta">July 2008.</span><a href="http://lambdadelta.info/documentation.html#ldJ1a">First journal paper on λδ</a>
  66       accepted for publication.
  67    </li></ul><ul><li><span class="emph delta">July 2008.</span>
  68       First <a href="http://helm.cs.unibo.it/procedural/">procedural reconstruction</a>
  69       for <a href="http://matita.cs.unibo.it/">Matita 0.5</a>
  70       of the λδ version 1 for Coq 7.3.1.
  71    </li></ul><ul><li><span class="emph delta">June 2008.</span>
  72       The <a href="http://lambdadelta.info/specification.html#static1">
  73          HTML pages of the specification of λδ version 1 for Matita 0.5</a>
  74       are online.
  75    </li></ul><ul><li><span class="emph delta">May 2008.</span>
  76       The specification of λδ version 1 is concluded.
  77    </li></ul><ul><li><span class="emph alpha">March 2008.</span>
  78       The specification of λδ version 2 is started with Coq 7.3.1 (false start).
  79    </li></ul><ul><li><span class="emph gamma">September 2007.</span>
  80       The <a href="http://lambdadelta.info/specification.html#dynamic1">
  81          specification of λδ version 1 for Matita 0.4</a>
  82       is online.
  83    </li></ul><ul><li><span class="emph gamma">November 2006.</span><a href="http://lambdadelta.info/documentation.html#ldR1b">λδ version 1</a>
  84       is released.
  85    </li></ul><ul><li><span class="emph beta">December 2005.</span><a href="http://lambdadelta.info/documentation.html#ldP1a">First communication on λδ version 1</a>.
  86    </li></ul><ul><li><span class="emph alpha">May 2004.</span>
  87       The specification of <a href="http://lambdadelta.info/specification.html#v1">λδ version 1</a>
  88       is started with Coq 7.3.1.
  89    </li></ul><!-- ===================================================================== --><div class="head2dx" id="visibility">Visibility <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b3.png"/></div><ul><li><span class="emph alpha">June 2014.</span>
  90       The <a href="http://www.google.com/">Google</a>
  91       search for "formal system lambda delta" gives
  92       5 resources about the λδ family in the first 6 results.
  93    </li></ul><ul><li><span class="emph alpha">June 2014.</span>
  94       The <a href="http://www.yahoo.com/">Yahoo</a>
  95       search for "formal system lambda delta" gives
  96       4 resources about the λδ family in the first 5 results.
  97    </li></ul><div class="spacer"><img class="rule" alt="[Spacer]" title="\lambda\delta rainbow rule" src="http://lambdadelta.info/images/rainbow.png"/></div><div class="spacer"><br/></div><div class="spacer"><a href="http://validator.w3.org/check?uri=referer"><img class="w3c" alt="[Valid XHTML 1.1]" title="Valid XHTML 1.1" src="http://www.w3.org/Icons/valid-xhtml11-blue"/></a><a href="http://jigsaw.w3.org/css-validator/check/referer"><img class="w3c" alt="[Valid CSS level 2]" title="Valid CSS level 2" src="http://www.w3.org/Icons/valid-css2-blue"/></a><a href="http://www.w3.org/XML/"><img class="w3c" alt="[Generated from XML via XSL]" title="Generated from XML via XSL" src="http://lambdadelta.info/images/xml_xsl2.png"/></a><a href="http://www.w3.org/Graphics/PNG/"><img class="w3c" alt="[PNG used here]" title="PNG used here" src="http://lambdadelta.info/images/PNGnow2.png"/></a><a href="http://www.anybrowser.org/campaign/"><img class="w3c" alt="[Viewable with any browser]" title="Viewable with any browser" src="http://www.anybrowser.org/campaign/bvgraphics/abtfile.png"/></a></div><div class="spacer"><br/></div><div class="spacer">Last update: Thu, 09 Mar 2017 13:38:15 +0100</div></body></html>