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+ <meta name="description" content="\lambda\delta home page" />
+ <title>\lambda\delta home page</title>
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+ </div>
+ <div class="head1">The Formal System λδ version 1</div>
+ <div class="spacer">
+ <img class="rule" alt="[Spacer]" title="lambdadelta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
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+ <table cellpadding="4" cellspacing="0">
+ <tbody>
+ <tr>
+ <td class="snss component sky">
+ <a href="http://lambdadelta.info/index.html">foreword</a>
+ </td>
+ <td class="snss component magenta">
+ <a href="http://lambdadelta.info/news.html">news</a>
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+ <a href="http://lambdadelta.info/documentation.html">documentation</a>
+ </td>
+ <td class="ssss component green">
+ <a href="http://lambdadelta.info/implementation.html">implementation</a>
+ </td>
+ </tr>
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+ </table>
+ </div>
+
+ <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="foreword">Formats <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b9.png" />
+ </div>
+ <div xmlns:ld="http://lambdadelta.info/" class="text">
+ The formal specification of λδ version 1
+ is available in the following formats:
+ <ul>
+ <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.
+ <a href="http://lambdadelta.info/implementation.html#bibtex">BibTeX entry</a>
+ </li>
+ </ul>
+ <ul>
+ <li>
+ <a href="http://lambdadelta.info/static/matita/lambdadelta/">lambdadelta_1 for Matita 0.5"</a>
+ (revised <span class="date">2011-09</span>).
+ Static HTML pages generated by the <a href="http://helm.cs.unibo.it/">HELM</a> rendering engine.
+ <ul>
+ <li>
+ <a href="http://lambdadelta.info/static/matita/lambdadelta/basic_1/pr3/pr3/pr3_confluence.con.html">
+ Confluence of reduction</a>
+ (Church-Rosser property).
+ </li>
+ <li>
+ <a href="http://lambdadelta.info/static/matita/lambdadelta/basic_1/ty3/props/ty3_correct.con.html">
+ Correctness of types</a>.
+ </li>
+ <li>
+ <a href="http://lambdadelta.info/static/matita/lambdadelta/basic_1/ty3/props/ty3_unique.con.html">
+ Uniqueness of types up to conversion</a>.
+ </li>
+ <li>
+ <a href="http://lambdadelta.info/static/matita/lambdadelta/basic_1/ty3/pr3/ty3_sred_pr3.con.html">
+ Subject reduction of the type assignment</a>.
+ </li>
+ <li>
+ <a href="http://lambdadelta.info/static/matita/lambdadelta/basic_1/ty3/arity_props/ty3_sn3.con.html">
+ Strong normalization of the typed terms</a>.
+ </li>
+ <li>
+ <a href="http://lambdadelta.info/static/matita/lambdadelta/basic_1/ty3/dec/ty3_inference.con.html">
+ Decidability of the type inference problem</a>.
+ </li>
+ </ul>
+ </li>
+ </ul>
+ <ul>
+ <li>
+ <a href="http://mowgli.cs.unibo.it:58080/apply?keys=RT&xmluri=http://helm.cs.unibo.it/helm//html/folder/index.html&prop.media-type=text/html&param.thmedia-type=text/html&param.thkeys=T1%2CT2%2CL%2CE&param.embedkeys=d_c%2CTC1%2CHC2%2CL&param.thencoding=UTF-8&prop.encoding=UTF-8&prop.doctype-public=-//W3C//DTD%20XHTML%201.0%20Transitional//EN&param.doctype-public=-//W3C//DTD%20XHTML%201.0%20Transitional//EN&param.encoding=UTF-8&param.media-type=text/html&param.keys=d_c%2CC1%2CHC2%2CL&profile=default&param.profile=default&param.CICURI=theory:/matita/lambdadelta/">
+ lambdadelta_1 for Matita 0.5"</a>
+ (revised <span class="date">2011-09</span>).
+ <a href="http://helm.cs.unibo.it/">HELM</a> directory.
+ <span class="date">Notice: the HELM rendering engine is offline.</span>
+ </li>
+ </ul>
+ </div>
+
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+ <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Sun, 06 Jul 2014 20:36:00 +0200</div>
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