X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=helm%2Fwww%2Flambdadelta%2Fspecification.html;h=0c02414008a49a22f41ac8eccfc4177610ff1a00;hb=ac97468f5422efc770316286cb807e3d3245a474;hp=74d092b40cf6aa0bd6ac75f64e21d4d55415f435;hpb=1f1eb9d91faf1e905d44b5f44943b2db8472cc74;p=helm.git

diff --git a/helm/www/lambdadelta/specification.html b/helm/www/lambdadelta/specification.html
index 74d092b40..0c0241400 100644
--- a/helm/www/lambdadelta/specification.html
+++ b/helm/www/lambdadelta/specification.html
@@ -69,7 +69,7 @@
           </tr>
           <tr>
             <td class="snss capitalize sky">
-              <a href="http://lambdadelta.info/index.html#notice">notice</a>
+              <a href="http://lambdadelta.info/index.html#citations">citations</a>
             </td>
             <td class="snss capitalize magenta">
               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
@@ -96,7 +96,20 @@
    <div xmlns:ld="http://lambdadelta.info/" class="text">
       λδ is developed as a machine-checked digital specification.
       It comes in several versions listed in the next table,
-      which includes the major milestones:
+      which includes the major milestones.
+   </div>
+   <div xmlns:ld="http://lambdadelta.info/" class="text">
+      The life cycle of a specification consists of four periods.
+      <span class="emph alpha">Alpha:</span>
+      the definitions are designed and the major propositions are proved,
+      then the calculus is announced with a presentation.
+      <span class="emph beta">Beta:</span>
+      major changes and additions may occur before the calculus is released on paper.
+      <span class="emph gamma">Gamma:</span>
+      subsequent improvements occur until the specification is completed or superseded,
+      while major changes and additions are announced and reported on paper.
+      <span class="emph delta">Delta:</span>
+      after its conclusion, the specification is modified just for maintenance. 
    </div>
    <div xmlns:ld="http://lambdadelta.info/" class="text">
       <table cellpadding="4" cellspacing="0">
@@ -109,7 +122,7 @@
             <td class="snnn top capitalize italic gray">started</td>
             <td class="snnn top capitalize italic gray">announced</td>
             <td class="snnn top capitalize italic gray">released</td>
-            <td class="ssnn top capitalize italic gray">dismissed</td>
+            <td class="ssnn top capitalize italic gray">concluded</td>
           </tr>
           <tr>
             <td class="snns top orange">
@@ -122,8 +135,20 @@
             <td class="snnn top orange">"A"</td>
             <td class="snnn top orange">April 2011</td>
             <td class="snnn top orange">June 2014</td>
-            <td class="snnn top orange">Planned in October 2014</td>
-            <td class="ssnn top orange">Not planned yet</td>
+            <td class="snnn top orange">October 2014</td>
+            <td class="ssnn top orange" />
+          </tr>
+          <tr>
+            <td class="snns top orange">Abandoned</td>
+            <td class="snnn top orange" />
+            <td class="snnn top orange">
+              <a href="http://coq.inria.fr/">Coq 7.3.1</a>
+            </td>
+            <td class="snnn top orange" />
+            <td class="snnn top orange">March 2008</td>
+            <td class="snnn top orange" />
+            <td class="snnn top orange" />
+            <td class="ssnn top orange">February 2011</td>
           </tr>
           <tr>
             <td class="snss top red">
@@ -146,7 +171,7 @@
 
 
    <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="v2">
-      <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b4.png" /> λδ version 2 (in progress)</div>
+      <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b4.png" /> λδ version 2 (active)</div>
    <div xmlns:ld="http://lambdadelta.info/" class="text">
       The formal specification of λδ version 2
       is available in the following formats:
@@ -154,9 +179,20 @@
 
    <ul xmlns:ld="http://lambdadelta.info/" id="source2">
       <li>
-      <a href="http://lambdadelta.info/download/lambdadelta_2.tar.gz">lambdadelta_2 for Matita 0.99.2</a>
-      (revised <span class="date">2014-10</span>).
-      Source scripts.
+      <div class="text">
+         <a href="http://lambdadelta.info/download/lambdadelta_2.tar.gz">lambdadelta_2 for Matita 0.99.2</a>
+         (revised <span class="emph gamma">2014-10</span>).
+         Source scripts.
+      </div>
+      <div class="text">
+         The scripts are grouped in directories, first by part, then by component.
+      </div>
+      <div class="text">
+         <span class="emph alpha">Notice:</span>
+         the scripts are checked by the latest version of Matita from
+         <a href="http://matita.cs.unibo.it/download.shtml">HELM Subversion repository</a>
+         at path &lt;trunk/matita/&gt;.
+      </div>
    </li>
     </ul>
 
@@ -166,11 +202,24 @@
       <a href="http://lambdadelta.info/basic_2.html">Core</a>,
       <a href="http://lambdadelta.info/apps_2.html">Applications</a>.
    </div>
+   <div xmlns:ld="http://lambdadelta.info/" class="text">
+      <span class="emph alpha">Notice on numerical acounts:</span>
+      nodes are counted according to the "intrinsic complexity measure"
+      [F. Guidi: "Procedural Representation of CIC Proof Terms"
+      Journal of Automated Reasoning 44(1-2), Springer (February 2010), pp. 53-78].       
+   </div>
+   <div xmlns:ld="http://lambdadelta.info/" class="text">
+      <span class="emph alpha">Notice on displayed logical structures:</span>
+      from the logical standpoint, the source scripts are grouped in "planes"
+      and these are grouped in "components";
+      the notation for the relations or functions
+      introduced in each script, is shown in parentheses (? are placeholders).
+   </div>
 
 
 
    <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="v1">
-      <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b6.png" /> λδ version 1 (dismissed)</div>
+      <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b6.png" /> λδ version 1 (superseded)</div>
    <div xmlns:ld="http://lambdadelta.info/" class="text">
       The formal specification of λδ version 1
       is available in the following formats:
@@ -178,16 +227,21 @@
 
    <ul xmlns:ld="http://lambdadelta.info/" id="source1">
       <li>
-      <a href="http://lambdadelta.info/download/lambdadelta_1.tar.gz">lambdadelta_1 for Coq 7.3.1</a>
-      (revised <span class="date">2012-10</span>).
-      Source scripts.
+      <div class="text">
+         <a href="http://lambdadelta.info/download/lambdadelta_1.tar.gz">lambdadelta_1 for Coq 7.3.1</a>
+         (revised <span class="emph delta">2012-10</span>).
+         Source scripts.
+      </div>      
+      <div class="text">
+         The scripts are grouped in directories, one for each part.
+      </div>
    </li>
     </ul>
 
    <ul xmlns:ld="http://lambdadelta.info/" id="static1">
       <li>
-      <a href="http://lambdadelta.info/static/matita/lambdadelta/">lambdadelta_1 for Matita 0.5"</a>
-      (revised <span class="date">2011-09</span>).
+      <a href="http://lambdadelta.info/static/matita/lambdadelta/">lambdadelta_1 for Matita 0.5</a>
+      (revised <span class="emph delta">2011-09</span>).
       Static HTML pages generated by the <a href="http://helm.cs.unibo.it/">HELM</a> rendering engine.  
       <ul>
           <li>
@@ -222,10 +276,10 @@
    <ul xmlns:ld="http://lambdadelta.info/" id="dynamic1">
       <li>
       <a href="http://mowgli.cs.unibo.it:58080/apply?keys=RT&amp;xmluri=http://helm.cs.unibo.it/helm//html/folder/index.html&amp;prop.media-type=text/html&amp;param.thmedia-type=text/html&amp;param.thkeys=T1%2CT2%2CL%2CE&amp;param.embedkeys=d_c%2CTC1%2CHC2%2CL&amp;param.thencoding=UTF-8&amp;prop.encoding=UTF-8&amp;prop.doctype-public=-//W3C//DTD%20XHTML%201.0%20Transitional//EN&amp;param.doctype-public=-//W3C//DTD%20XHTML%201.0%20Transitional//EN&amp;param.encoding=UTF-8&amp;param.media-type=text/html&amp;param.keys=d_c%2CC1%2CHC2%2CL&amp;profile=default&amp;param.profile=default&amp;param.CICURI=theory:/matita/lambdadelta/">
-         lambdadelta_1 for Matita 0.5"</a>
-      (revised <span class="date">2011-09</span>).
+         lambdadelta_1 for Matita 0.5</a>
+      (revised <span class="emph delta">2011-09</span>).
       <a href="http://helm.cs.unibo.it/">HELM</a> directory.
-      <span class="date">Notice: the HELM rendering engine is offline.</span>
+      <span class="emph alpha">Notice: the HELM rendering engine is offline.</span>
    </li>
     </ul>
 
@@ -255,6 +309,6 @@
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Tue, 14 Oct 2014 00:04:55 +0200</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Tue, 04 Nov 2014 16:28:51 +0100</div>
 </body>
 </html>