]> matita.cs.unibo.it Git - helm.git/blobdiff - helm/www/lambdadelta/home.html
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-    <meta http-equiv="Content-Language" content="en-us" />
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-    <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 xmlns:ld="http://lambdadelta.info/" class="spacer">
-      <br />
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" 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 xmlns:ld="http://lambdadelta.info/" class="head2dx" id="foreword">Foreword <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b9.png" />
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">
-      The formal systems of the λδ (\lambda\delta) family are typed λ-calculi aiming to support
-      the foundational frameworks for Mathematics that require an underlying specification language
-      (for example the <a href="http://www.math.unipd.it/~maietti/">Minimalist Foundation</a>
-       and its predecessors).
-   </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">
-      The λδ family is developed within the
-      <a href="http://helm.cs.unibo.it/">Hypertextual Electronic Library of Mathematics</a>
-      as a set of machine-checked digital specifications.
-   </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">
-      This is the family logo: <a href="http://lambdadelta.info/images/crux_177.png">crux_177.png</a>
-      (revised <span class="emph alpha">2012-09</span>).
-   </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">
-      <span class="emph alpha">Notice for the user of Internet Explorer.</span>
-      To view this site correctly, please select a font
-      with <a href="http://www.unicode.org/">Unicode</a> support.
-      For example "Lucida Sans Unicode" (it should be already installed on your system).
-      To change the current font follow:
-      "Tools" menu → "Internet Options" entry → "General" tab → "Fonts" button.
-   </div>
-    <!-- ===================================================================== -->
-    <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="citations">Citations <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b9.png" />
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">
-      This is a list of publications citing λδ documentation.
-   </div>
-    <ul xmlns:ld="http://lambdadelta.info/" id="C9">
-      <li>
-      Matthias Weber:
-      <span class="emph alpha">An extended type system with lambda-typed lambda-expressions (extended version)</span>
-      (2017). Technical report. Faculty of Computer Science, Technical University of Berlin.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="C8">
-      <li>
-      M.E. Maietti, S. Maschio:
-      <span class="emph alpha">An extensional Kleene realizability semantics for the Minimalist Foundation</span>
-      (2015). In Leibniz International Proceedings in Informatics, 39, pp 162-186. Schloss Dagstuhl, Leibniz-Zentrum für Informatik.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="C7">
-      <li>
-      C. Dunchev, F. Guidi, C. Sacerdoti Coen, E. Tassi:
-      <span class="emph alpha">ELPI: Fast, Embeddable, λProlog Interpreter</span>
-      (2015). In proc. of LPAR 20. Lecture Notes in Computer Science, 9450, pp. 460-468. Springer.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="C6">
-      <li>
-      A. Asperti, W. Ricciotti, C. Sacerdoti Coen, E. Tassi:
-      <span class="emph alpha">Formal metatheory of programming languages in the Matita interactive theorem prover</span>
-      (2012). In Journal of Automated Reasoning, 49(3), pp. 427-451. Springer.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="C5">
-      <li>
-      M.E. Maietti:
-      <span class="emph alpha">Consistency of the minimalist foundation with Church thesis and Bar Induction</span>
-      (2012). Submitted article.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="C4">
-      <li>
-      W. Ricciotti:
-      <span class="emph alpha">Theoretical and implementation aspects in the mechanization of the metatheory of programming languages</span>
-      (July 2011). Ph.D. Thesis in Computer Science, Technical Report UBLCS-2011-09, University of Bologna.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="C3">
-      <li>
-      C.E. Brown:
-      <span class="emph alpha">Faithful Reproductions of the Automath Landau Formalization</span>
-      (2011). Technical report.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="C2">
-      <li>
-      M.E. Maietti:
-      <span class="emph alpha">A minimalist two-level foundation for constructive mathematics</span>
-      (2009). In Annals of Pure and Applied Logic, 160(3), pp. 319-354. Elsevier. 
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="C1">
-      <li>
-      V. Rahili: 
-      <span class="emph alpha">First Year Report: Realisability methods of proof and semantics with application to expansion</span>
-      (July 2007). Technical report.
-   </li>
-    </ul>
-    <!-- ===================================================================== -->
-    <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="disclaimer">Disclaimer <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b9.png" />
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">
-      The systems of the λδ family <span class="emph alpha">are not</span> related intentionally to
-      any other system having (variations of) the symbols λ and δ in its name or syntax.
-      Examples include (but are not limited to):
-   </div>
-    <ul xmlns:ld="http://lambdadelta.info/" id="D1">
-      <li>
-        <span class="emph alpha">λ-δ</span> of
-      A. Church:
-      <span class="emph alpha">The calculi of lambda-conversion</span>
-      (1941).
-      Annals of Mathematics Studies 6.
-      Princeton University Press.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="D2">
-      <li>
-        <span class="emph alpha">∆Λ</span> of
-      N.G. de Bruijn:
-      <span class="emph alpha">Generalizing Automath by means of a lambda-typed lambda calculus</span>
-      (1987).
-      In Lecture Notes in Pure and Applied Mathematics 106, pp. 71-92.
-      Marcel Dekker.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="D3">
-      <li>
-        <span class="emph alpha">λ<sub>∆</sub>
-        </span> of
-      N.J. Rehof, M.H. Sørensen:
-      <span class="emph alpha">The λ<sub>∆</sub>-calculus</span>
-      (1994).
-      In Lecture Notes in Computer Science, 789, pp. 516–542.
-      Springer.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="D4">
-      <li>
-        <span class="emph alpha">λ∆</span> of
-      S. Ronchi Della Rocca, L. Paolini:
-      <span class="emph alpha">The Parametric Lambda Calculus</span>
-      (2004).
-      Texts in Theoretical Computer Science, An EATCS Series.
-      Springer.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="D5">
-      <li>
-        <span class="emph alpha">λD</span> of
-      R. Nederpelt, H. Geuvers:
-      <span class="emph alpha">Type Theory and Formal Proof</span>
-      (2014).
-      Cambridge University Press.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/" id="D6">
-      <li>
-        <span class="emph alpha">Cλξ</span> of
-      N.G. de Bruijn:
-      <span class="emph alpha">A namefree lambda calculus with facilities for internal definition of expressions and segments</span>
-      (1978).
-      TH-report 78-WSK-03.
-      Eindhoven University of Technology, Eindhoven.
-   </li>
-    </ul>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">
-      <img class="icon32" alt="[Smiling face]" title="Smile!" src="http://lambdadelta.info/images/smile.png" /> 
-      Moreover, the systems of the λδ family <span class="emph alpha">are not</span> related intentionally to
-      <a href="http://umineko.wikia.com/wiki/Lambdadelta">Lady Lambdadelta</a>,
-      the Witch of Certainty of the sound novel
-      <a href="https://it.wikipedia.org/wiki/Umineko_no_naku_koro_ni">Umineko no Naku Koro ni</a>.
-   </div>
-    <div class="spacer">
-      <img class="rule" alt="[Spacer]" title="\lambda\delta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">
-      <br />
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" 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" />
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-        <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" />
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-      <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" />
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-      <a href="http://www.anybrowser.org/campaign/">
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-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">
-      <br />
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Fri, 24 Nov 2017 21:00:00 +0100</div>
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