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- <meta content="Ferruccio Guidi" name="author">
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-<h1>The Formal System λδ (\lambda\delta)<br>
-</h1>
-<h2>Towards the unification of terms, types, environments and contexts</h2>
-<img style="width: 95%; height: 4px;" alt="[Separator]"
- title="Separator" src="images/rainbow.png"><br>
-<table
- style="text-align: left; width: 95%; margin-left: auto; margin-right: auto;"
- border="0" cellpadding="2" cellspacing="20">
- <tbody>
- <tr>
- <td style="vertical-align: top;">
- <ul>
- <li><a href="index.html">Foreword</a></li>
- </ul>
- <ul>
- <li><a href="news.html">News</a></li>
- </ul>
- <ul>
- <li>Papers</li>
- </ul>
- <ul>
- <li><a href="implementation.html">Resources</a><br>
- </li>
- </ul>
- </td>
- <td style="vertical-align: top; text-align: left;">
- <h3 style="text-align: right;">Documentation <img
- style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly"
- src="images/b5.png"></h3>
-Currently the <span style="font-weight: bold;">main source of
-information</span> on λδ (version 1) is <span
- style="font-weight: bold;">Resource J1</span> below.<br>
-A <span style="font-weight: bold;">summary</span> of basic λδ (version
-1) is found in <span style="font-weight: bold;">Resource P5</span>
-below.<br>
- <h3><img style="width: 32px; height: 32px;"
- alt="[Basic
- lambdadelta Logo]"
- title="Basic lambdadelta" src="images/basic_32.png"> Basic λδ version
-2 (in progress):</h3>
- <table style="text-align: left; width: 100%;" border="0"
- cellpadding="2" cellspacing="2">
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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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" />
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+ </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 style="vertical-align: top;">R5.<br>
+ <td class="snns capitalize italic sky">
+ <a href="http://lambdadelta.info/home.html">home</a>
</td>
- <td style="vertical-align: top;"><a name="ldp7"></a>F.
-Guidi: <a href="download/cie_2010.pdf"><span
- style="font-style: italic;">An Efficient Validation Procedure for the
-Formal System </span><span style="font-style: italic;">λδ</span></a><span
- style="font-style: italic;"></span> (<span style="font-weight: bold;">2010-07</span>).
-
-In
- <span style="font-style: italic;">CiE 2010 Local Proceedings</span>.
-
-University
-of Azores, CMATI Booklet, pp. 204-213. <a
- href="implementation.html#bibtex">BibTeX entry</a>.<br>
- <br>
+ <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 style="vertical-align: top;">R4.<br>
+ <td class="snns capitalize sky">
+ <a href="http://lambdadelta.info/home.html#foreword">foreword</a>
</td>
- <td style="vertical-align: top;"> <a name="ldp6"></a>F.
-Guidi: <a
- href="http://www.informatica.unibo.it/it/ricerca/technical-report/2009/UBLCS-2009-16"><span
- style="font-style: italic;">Landau's "Grundlagen der Analysis" from
-Automath to lambda-delta</span></a> (<span style="font-weight: bold;">2009-09)</span>.
-
-University
-of Bologna, technical report UBLCS-2009-16. <a
- href="implementation.html#bibtex">BibTeX entry</a>.<br>
- <br>
+ <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 style="vertical-align: top;">P7.<br>
+ <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 style="vertical-align: top;"><a name="ldt7"></a>F.
-Guidi: <a href="download/ld_talk_7s.pdf"><span
- style="font-style: italic;">An Efficient Validation Procedure for the
-Formal System λδ</span></a> (<span style="font-weight: bold;">2010-07</span>).
-
-Presentation
-at CiE 2010 (slides).<br>
- <br>
+ <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="bibtex">Documentation <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b4.png" />
+ </div>
+ <div xmlns:ld="http://lambdadelta.info/" class="text">
+ BibTeX database of λδ documentation:
+ <span class="emph alpha">download</span>
+ <a href="http://lambdadelta.info/download/lambdadelta.bib">lambdadelta.bib</a>,
+ <span class="emph alpha">view</span>
+ <a href="http://lambdadelta.info/download/lambdadelta.txt">lambdadelta.txt</a>
+ (revised <span class="emph gamma">2015-09</span>).
+ </div>
+ <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="v3">
+ <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b8.png" /> λδ version 3 (proposed)</div>
+ <div xmlns:ld="http://lambdadelta.info/" class="text">
+ The main source of information is <span class="emph alpha">J3a</span>.
+ </div>
+ <div xmlns:ld="http://lambdadelta.info/" class="text">
+ <table cellpadding="4" cellspacing="0">
+ <tbody>
+ <tr>
+ <td class="snns top" id="ldJ3a">
+ <span class="emph alpha">J3a.</span>
+ </td>
+ <td class="ssnn top">F. Guidi: <a href="http://jfr.unibo.it/article/view/4716">Verified Representations of Landau's "Grundlagen" in the λδ Family and in the Calculus of Constructions</a> (<span class="emph alpha">2015-12</span>). In JFR 8(1), Univerity of Bologna, pp. 93-116. <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
</tr>
<tr>
- <td style="vertical-align: top;">P6.<br>
+ <td class="nnss top" />
+ <td class="nssn top">
+ <br />
</td>
- <td style="vertical-align: top;"><a name="ldt6"></a>F.
-Guidi: <a href="download/ld_talk_6s.pdf"><span
- style="font-style: italic;">A Validator for the Formal System λδ</span></a>
-(revised <span style="font-weight: bold;">2010-02</span>).
-Presentation at the University of Bologna (slides). </td>
</tr>
</tbody>
</table>
- <h3><img style="width: 32px; height: 32px;"
- alt="[Basic
- lambdadelta Logo]"
- title="Basic lambdadelta" src="images/basic_32.png"> Basic λδ version
-1 (dismissed):</h3>
- <table style="text-align: left; width: 100%;" border="0"
- cellpadding="2" cellspacing="2">
+ </div>
+ <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="v2">
+ <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b4.png" /> λδ version 2 (active)</div>
+ <div xmlns:ld="http://lambdadelta.info/" class="text">
+ The main source of information is <span class="emph alpha">R2c</span>.
+ </div>
+ <div xmlns:ld="http://lambdadelta.info/" class="text">
+ <table cellpadding="4" cellspacing="0">
<tbody>
<tr>
- <td style="vertical-align: top;">J1.<br>
+ <td class="snns top" id="ldR2c">
+ <span class="emph alpha">R2c.</span>
+ </td>
+ <td class="ssnn top">F. Guidi: <a href="http://amsacta.unibo.it/4411/">Extending the Applicability Condition in the Formal System λδ</a> (<span class="emph gamma">2015-03</span>). University of Bologna, technical report AMS Acta 4411. <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
+ </tr>
+ <tr>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
+ </td>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldR2b">
+ <span class="emph alpha">R2b.</span>
+ </td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/cie_2010.pdf">An Efficient Validation Procedure for the Formal System λδ</a> (<span class="emph alpha">2010-07</span>). In CiE 2010 Local Proceedings. University of Azores, CMATI Booklet, pp. 204-213. <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
+ </tr>
+ <tr>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
</td>
- <td style="vertical-align: top;"><a name="ldp5"></a>F.
-Guidi: <a href="http://doi.acm.org/10.1145/1614431.1614436"><span
- style="font-style: italic;">The Formal System λδ</span></a> (<span
- style="font-weight: bold;">2009-11</span>). In ACM ToCL 11(1), pp.
-5:1-5:37 (<a href="http://tocl.acm.org/accepted/335guidi.pdf">accepted</a>
- <span style="font-weight: bold;">2008-07</span>). CoRR
-identifier <a href="http://arxiv.org/abs/cs/0611040"><span
- style="font-style: italic;"></span>cs/0611040</a> [v10] (revised <span
- style="font-weight: bold;">2008-09</span>). <a
- href="implementation.html#bibtex">BibTeX entry</a>.<br>
- <br>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldR2a">
+ <span class="emph alpha">R2a.</span>
</td>
+ <td class="ssnn top">F. Guidi: <a href="http://www.informatica.unibo.it/it/ricerca/technical-report/2009/UBLCS-2009-16">Landau's "Grundlagen der Analysis" from Automath to lambda-delta</a> (<span class="emph alpha">2009-09</span>). University of Bologna, technical report UBLCS-2009-16. <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
</tr>
<tr>
- <td style="vertical-align: top;">R3.<br>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
</td>
- <td style="vertical-align: top;"><a name="ldp4"></a>F.
-Guidi: <a href="download/cie_2007.pdf"><span
- style="font-style: italic;">Lambda Types on the Lambda Calculus with
-Abbreviations</span></a> (<span style="font-weight: bold;">2007-06</span>).
-
-In
- <span style="font-style: italic;">CiE 2007 Local Proceedings</span>.
-
-University
-of Siena, technical report 487, p. 387 (abstract of a
-presentation). <a href="implementation.html#bibtex">BibTeX entry</a>.<br>
- <br>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldP2d">
+ <span class="emph alpha">P2d.</span>
</td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/ld_talk_9s.pdf">Considerations on Automath in Light of the Grundlagen</a> (revised <span class="emph gamma">2016-06</span>). Presentation at University of Bologna (slides).</td>
</tr>
<tr>
- <td style="vertical-align: top;">R2.<br>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
</td>
- <td style="vertical-align: top;"><a name="ldp3"></a>F.
-Guidi: <a
- href="http://www.informatica.unibo.it/it/ricerca/technical-report/2006/UBLCS-2006-25"><span
- style="font-style: italic;">Lambda Types on the Lambda Calculus with
-Abbreviations</span></a> (<span style="font-weight: bold;">2006-11</span>).
-
-University
-of Bologna, technical report UBLCS-2006-25. <a
- href="implementation.html#bibtex">BibTeX entry</a>.<br>
- <br>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldP2c">
+ <span class="emph alpha">P2c.</span>
</td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/ld_talk_8s.pdf">The Formal System λδ and the "Three Problems"</a> (<span class="emph beta">2014-06</span>). Presentation at University of Bologna, for the 10th anniversary of λδ (slides).</td>
</tr>
<tr>
- <td style="vertical-align: top;">R1.<br>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
</td>
- <td style="vertical-align: top;"><a name="ldp2"></a>F.
-Guidi: <a style="font-style: italic;"
- href="http://www.informatica.unibo.it/it/ricerca/technical-report/2006/UBLCS-2006-01">Lambda
-
-Types
-on the Lambda Calculus with Abbreviations: a Certified
-Specification</a> (<span style="font-weight: bold;">2006-01</span>).
-University of Bologna, technical report UBLCS-2006-01. <a
- href="implementation.html#bibtex">BibTeX entry</a>.<br>
- <br>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldP2b">
+ <span class="emph alpha">P2b.</span>
</td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/ld_talk_7s.pdf">An Efficient Validation Procedure for the Formal System λδ</a> (<span class="emph alpha">2010-07</span>). Presentation at CiE 2010 (slides).</td>
</tr>
<tr>
- <td style="vertical-align: top;">P5.<br>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
</td>
- <td style="vertical-align: top;"><a name="ldt5"></a>F.
-Guidi: <a style="font-style: italic;" href="download/ld_talk_5s.pdf">The
-
-Formal
-System </a><a href="download/cie_2010.pdf"><span
- style="font-style: italic;">λδ</span></a> (<span
- style="font-weight: bold;">2008-10</span>). Presentation at "Advances
-in Constructive Topology and Logical Foundations" (slides).<br>
- <br>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldP2a">
+ <span class="emph alpha">P2a.</span>
</td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/ld_talk_6s.pdf">A Validator for the Formal System λδ</a> (revised <span class="emph alpha">2010-02</span>). Presentation at University of Bologna (slides).</td>
</tr>
<tr>
- <td style="vertical-align: top;">P4.<br>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
</td>
- <td style="vertical-align: top;"><a name="ldt4"></a>F.
-Guidi: <a href="download/ld_talk_4s.pdf"><span
- style="font-style: italic;">Towards the Unification of Terms, Types
-and Contexts</span></a> (<span style="font-weight: bold;">2008-03</span>).
-
-Presentation
-at Types 2008 (slides).<br>
- <br>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldV2a">
+ <span class="emph alpha">V2a.</span>
</td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/version_2.html">lambdadelta_2A1</a> (revised <span class="emph gamma">2014-10</span>). Formal specification for the proof assistant Matita 0.99.2 (scripts). <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
</tr>
<tr>
- <td style="vertical-align: top;">P3.<br>
+ <td class="nnss top" />
+ <td class="nssn top">
+ <br />
</td>
- <td style="vertical-align: top;"><a name="ldt3"></a>F.
-Guidi: <a href="download/ld_talk_3s.pdf"><span
- style="font-style: italic;">Lambda Types on the Lambda Calculus with
-Abbreviations</span></a> (<span style="font-weight: bold;">2007-06</span>).
-
-Presentation
-at CiE 2007 (slides).<br>
- <br>
+ </tr>
+ </tbody>
+ </table>
+ </div>
+ <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="v1">
+ <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b6.png" /> λδ version 1 (superseded)</div>
+ <div xmlns:ld="http://lambdadelta.info/" class="text">
+ The main source of information is <span class="emph alpha">J1a</span>.
+ A summary is available in <span class="emph alpha">P1e</span>.
+ </div>
+ <div xmlns:ld="http://lambdadelta.info/" class="text">
+ <table cellpadding="4" cellspacing="0">
+ <tbody>
+ <tr>
+ <td class="snns top" id="ldJ1a">
+ <span class="emph alpha">J1a.</span>
</td>
+ <td class="ssnn top">F. Guidi: <a href="http://doi.acm.org/10.1145/1614431.1614436">The Formal System λδ</a> (<span class="emph delta">2009-11</span>). In ACM ToCL 11(1), pp. 5:1-5:37 online app. pp. 1-11 (<a href="http://tocl.acm.org/accepted/335guidi.pdf">accepted</a>
+ <span class="emph delta">2008-07</span>). CoRR identifier <a href="http://arxiv.org/abs/cs/0611040">cs/0611040</a> [v10] (revised <span class="emph delta">2008-09</span>). <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
</tr>
<tr>
- <td style="vertical-align: top;">P2.<br>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
</td>
- <td style="vertical-align: top;"><a name="ldt2"></a>F.
-Guidi: <a href="download/ld_talk_2s.pdf"><span
- style="font-style: italic;">Lambda Tipi sul Lambda Calcolo con
-Abbreviazioni</span></a> (<span style="font-weight: bold;">2007-01</span>).
-
-Presentation
-at the University of Padova (slides <span style="font-weight: bold;">in
-Italian</span>).<br>
- <br>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldR1c">
+ <span class="emph alpha">R1c.</span>
</td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/cie_2007.pdf">Lambda Types on the Lambda Calculus with Abbreviations</a> (<span class="emph delta">2007-06</span>). In CiE 2007 Local Proceedings. University of Siena, technical report 487, p. 387 (abstract of a presentation). <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
</tr>
<tr>
- <td style="vertical-align: top;">P1.<br>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
</td>
- <td style="vertical-align: top;"><a name="ldt1"></a>F.
-Guidi: <a href="download/ld_talk_1s.pdf"><span
- style="font-style: italic;">Lambda Tipi sul Lambda Calcolo con
-Abbreviazioni: una Specifica Certificata</span></a> (<span
- style="font-weight: bold;">2005-12</span>). Presentation at the
-University of Bologna (slides <span style="font-weight: bold;">in
-Italian</span>).<br>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldR1b">
+ <span class="emph alpha">R1b.</span>
+ </td>
+ <td class="ssnn top">F. Guidi: <a href="http://www.informatica.unibo.it/it/ricerca/technical-report/2006/UBLCS-2006-25">Lambda Types on the Lambda Calculus with Abbreviations</a> (<span class="emph gamma">2006-11</span>). University of Bologna, technical report UBLCS-2006-25. <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
+ </tr>
+ <tr>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
+ </td>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldR1a">
+ <span class="emph alpha">R1a.</span>
+ </td>
+ <td class="ssnn top">F. Guidi: <a href="http://www.informatica.unibo.it/it/ricerca/technical-report/2006/UBLCS-2006-01">Lambda Types on the Lambda Calculus with Abbreviations: a Certified Specification</a> (<span class="emph beta">2006-01</span>). University of Bologna, technical report UBLCS-2006-01. <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
+ </tr>
+ <tr>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
+ </td>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldP1e">
+ <span class="emph alpha">P1e.</span>
+ </td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/ld_talk_5s.pdf">The Formal System λδ</a> (<span class="emph delta">2008-10</span>). Presentation at Advances in Constructive Topology and Logical Foundations (slides).</td>
+ </tr>
+ <tr>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
+ </td>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldP1d">
+ <span class="emph alpha">P1d.</span>
+ </td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/ld_talk_4s.pdf">Towards the Unification of Terms, Types and Contexts</a> (<span class="emph gamma">2008-03</span>). Presentation at Types 2008 (slides).</td>
+ </tr>
+ <tr>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
+ </td>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldP1c">
+ <span class="emph alpha">P1c.</span>
+ </td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/ld_talk_3s.pdf">Lambda Types on the Lambda Calculus with Abbreviations</a> (<span class="emph gamma">2007-06</span>). Presentation at CiE 2007 (slides).</td>
+ </tr>
+ <tr>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
+ </td>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldP1b">
+ <span class="emph alpha">P1b.</span>
+ </td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/ld_talk_2s.pdf">Lambda Tipi sul Lambda Calcolo con Abbreviazioni</a> (<span class="emph gamma">2007-01</span>). Presentation at University of Padova (slides <span class="emph alpha">in Italian</span>).</td>
+ </tr>
+ <tr>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
+ </td>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldP1a">
+ <span class="emph alpha">P1a.</span>
+ </td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/ld_talk_1s.pdf">Lambda Tipi sul Lambda Calcolo con Abbreviazioni: una Specifica Certificata</a> (<span class="emph beta">2005-12</span>). Presentation at University of Bologna (slides <span class="emph alpha">in Italian</span>).</td>
+ </tr>
+ <tr>
+ <td class="nnns top" />
+ <td class="nsnn top">
+ <br />
+ </td>
+ </tr>
+ <tr>
+ <td class="snns top" id="ldV1a">
+ <span class="emph alpha">V1a.</span>
+ </td>
+ <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/version_1.html">lambdadelta_1</a> (revised <span class="emph delta">2015-01</span>). Formal specification for the proof assistant Coq 7.3.1 (scripts). <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
+ </tr>
+ <tr>
+ <td class="nnss top" />
+ <td class="nssn top">
+ <br />
</td>
</tr>
</tbody>
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