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  22     <div class="head1">The Formal System λδ (\lambda\delta)</div>
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  27       <br />
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  29     <div xmlns:ld="http://lambdadelta.info/" class="text">
  30       <table cellpadding="4" cellspacing="0">
  31         <tbody>
  32           <tr>
  33             <td class="snns component sky">
  34               <a href="http://lambdadelta.info/index.html">home</a>
  35             </td>
  36             <td class="snns component magenta">
  37               <a href="http://lambdadelta.info/news.html">news</a>
  38             </td>
  39             <td class="snns component orange">
  40               <a href="http://lambdadelta.info/documentation.html">documentation</a>
  41             </td>
  42             <td class="snns component green">
  43               <a href="http://lambdadelta.info/implementation.html">implementation</a>
  44             </td>
  45             <td class="ssnn component green">(<a href="http://lambdadelta.info/implementation.html#specifications">specifications</a>
  46               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
  47               <a href="http://lambdadelta.info/implementation.html#helena">Helena</a>)</td>
  48           </tr>
  49           <tr>
  50             <td class="snns sky">
  51               <a href="http://lambdadelta.info/index.html#foreword">Foreword</a>
  52             </td>
  53             <td class="snns magenta">
  54               <a href="http://lambdadelta.info/news.html#milestones">Milestones</a>
  55             </td>
  56             <td class="snns orange">
  57               <a href="http://lambdadelta.info/documentation.html#v2">Version 2</a>
  58             </td>
  59             <td class="snns green">
  60               <a href="http://lambdadelta.info/version_2.html">Version 2</a>
  61             </td>
  62             <td class="ssnn green">
  63               <a href="http://lambdadelta.info/ground_2.html">Background</a>
  64               <a href="http://lambdadelta.info/basic_2.html">Core</a>
  65               <a href="http://lambdadelta.info/apps_2.html">Applications</a>
  66             </td>
  67           </tr>
  68           <tr>
  69             <td class="snss sky">
  70               <a href="http://lambdadelta.info/index.html#notice">Notice</a>
  71             </td>
  72             <td class="snss magenta">
  73               <a href="http://lambdadelta.info/news.html#visibility">Visibility</a>
  74             </td>
  75             <td class="snss orange">
  76               <a href="http://lambdadelta.info/documentation.html#v1">Version 1</a>
  77             </td>
  78             <td class="snss green">
  79               <a href="http://lambdadelta.info/version_1.html">Version 1</a>
  80             </td>
  81             <td class="sssn green">
  82               <br />
  83             </td>
  84           </tr>
  85         </tbody>
  86       </table>
  87     </div>
  88
  89    <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="bibtex">Documentation <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b5.png" />
  90     </div>
  91    <div xmlns:ld="http://lambdadelta.info/" class="text">
  92       BibTeX database of λδ documentation:
  93       <a href="http://lambdadelta.info/download/lambdadelta.bib">lambdadelta.bib</a>,
  94       <a href="http://lambdadelta.info/download/lambdadelta.txt">lambdadelta.txt</a>
  95       (revised <span class="date">2012-10</span>).
  96    </div>
  97
  98    <div xmlns:ld="http://lambdadelta.info/" class="head2sn" id="v2">
  99       <img class="icon32" alt="[basic lambdadelta logo]" title="basic lambdadelta" src="http://lambdadelta.info/images/basic_32.png" /> λδ version 2 (in progress)</div>
 100    <div xmlns:ld="http://lambdadelta.info/" class="text">
 101       The main source of information is <span class="date">P8</span>.
 102    </div>
 103    <div xmlns:ld="http://lambdadelta.info/" class="text">
 104       <table cellpadding="4" cellspacing="0">
 105         <tbody>
 106           <tr>
 107             <td class="snns top" id="ldp7">
 108               <span class="date">R5.</span>
 109             </td>
 110             <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="date">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>
 111           </tr>
 112           <tr>
 113             <td class="nnns top" />
 114             <td class="nsnn top">
 115               <br />
 116             </td>
 117           </tr>
 118           <tr>
 119             <td class="snns top" id="ldp6">
 120               <span class="date">R4.</span>
 121             </td>
 122             <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="date">2009-09</span>). University of Bologna, technical report UBLCS-2009-16. <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
 123           </tr>
 124           <tr>
 125             <td class="nnns top" />
 126             <td class="nsnn top">
 127               <br />
 128             </td>
 129           </tr>
 130           <tr>
 131             <td class="snns top" id="ldt8">
 132               <span class="date">P8.</span>
 133             </td>
 134             <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="date">2014-06</span>). Presentation at University of Bologna (slides).</td>
 135           </tr>
 136           <tr>
 137             <td class="nnns top" />
 138             <td class="nsnn top">
 139               <br />
 140             </td>
 141           </tr>
 142           <tr>
 143             <td class="snns top" id="ldt7">
 144               <span class="date">P7.</span>
 145             </td>
 146             <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="date">2010-07</span>). Presentation at CiE 2010 (slides).</td>
 147           </tr>
 148           <tr>
 149             <td class="nnns top" />
 150             <td class="nsnn top">
 151               <br />
 152             </td>
 153           </tr>
 154           <tr>
 155             <td class="snns top" id="ldt6">
 156               <span class="date">P6.</span>
 157             </td>
 158             <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="date">2010-02</span>). Presentation at University of Bologna (slides).</td>
 159           </tr>
 160           <tr>
 161             <td class="nnns top" />
 162             <td class="nsnn top">
 163               <br />
 164             </td>
 165           </tr>
 166           <tr>
 167             <td class="snns top" id="ldV2">
 168               <span class="date">V2.</span>
 169             </td>
 170             <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/version_2.html">lambdadelta_2</a> (revised <span class="date">2014-07</span>). Formal specification for the proof assistant Matita 0.99.2 (scripts). <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
 171           </tr>
 172           <tr>
 173             <td class="nnss top" />
 174             <td class="nssn top">
 175               <br />
 176             </td>
 177           </tr>
 178         </tbody>
 179       </table>
 180     </div>
 181
 182    <div xmlns:ld="http://lambdadelta.info/" class="head2sn" id="v1">
 183       <img class="icon32" alt="[basic lambdadelta logo]" title="basic lambdadelta" src="http://lambdadelta.info/images/basic_32.png" /> λδ version 1 (dismissed)</div>
 184    <div xmlns:ld="http://lambdadelta.info/" class="text">
 185       The main source of information is <span class="date">J1</span>.
 186       A summary is available in <span class="date">P5</span>.
 187    </div>
 188    <div xmlns:ld="http://lambdadelta.info/" class="text">
 189       <table cellpadding="4" cellspacing="0">
 190         <tbody>
 191           <tr>
 192             <td class="snns top" id="ldp5">
 193               <span class="date">J1.</span>
 194             </td>
 195             <td class="ssnn top">F. Guidi: <a href="http://doi.acm.org/10.1145/1614431.1614436">The Formal System λδ</a> (<span class="date">2009-11</span>). In In ACM ToCL 11(1), pp. 5:1-5:37 ( <a href="http://tocl.acm.org/accepted/335guidi.pdf">accepted</a>
 196               <span class="date">2008-07</span>). CoRR identifier <a href="http://arxiv.org/abs/cs/0611040">cs/0611040</a> [v10] (revised <span class="date">2008-09</span>). <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
 197           </tr>
 198           <tr>
 199             <td class="nnns top" />
 200             <td class="nsnn top">
 201               <br />
 202             </td>
 203           </tr>
 204           <tr>
 205             <td class="snns top" id="ldp4">
 206               <span class="date">R3.</span>
 207             </td>
 208             <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="date">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>
 209           </tr>
 210           <tr>
 211             <td class="nnns top" />
 212             <td class="nsnn top">
 213               <br />
 214             </td>
 215           </tr>
 216           <tr>
 217             <td class="snns top" id="ldp3">
 218               <span class="date">R2.</span>
 219             </td>
 220             <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="date">2006-11</span>). University of Bologna, technical report UBLCS-2006-25. <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
 221           </tr>
 222           <tr>
 223             <td class="nnns top" />
 224             <td class="nsnn top">
 225               <br />
 226             </td>
 227           </tr>
 228           <tr>
 229             <td class="snns top" id="ldp2">
 230               <span class="date">R1.</span>
 231             </td>
 232             <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="date">2006-01</span>). University of Bologna, technical report UBLCS-2006-01. <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
 233           </tr>
 234           <tr>
 235             <td class="nnns top" />
 236             <td class="nsnn top">
 237               <br />
 238             </td>
 239           </tr>
 240           <tr>
 241             <td class="snns top" id="ldt5">
 242               <span class="date">P5.</span>
 243             </td>
 244             <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/ld_talk_5s.pdf">The Formal System λδ</a> (<span class="date">2008-10</span>). Presentation at Advances in Constructive Topology and Logical Foundations (slides).</td>
 245           </tr>
 246           <tr>
 247             <td class="nnns top" />
 248             <td class="nsnn top">
 249               <br />
 250             </td>
 251           </tr>
 252           <tr>
 253             <td class="snns top" id="ldt4">
 254               <span class="date">P4.</span>
 255             </td>
 256             <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="date">2008-03</span>). Presentation at Types 2008 (slides).</td>
 257           </tr>
 258           <tr>
 259             <td class="nnns top" />
 260             <td class="nsnn top">
 261               <br />
 262             </td>
 263           </tr>
 264           <tr>
 265             <td class="snns top" id="ldt3">
 266               <span class="date">P3.</span>
 267             </td>
 268             <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="date">2007-06</span>). Presentation at CiE 2007 (slides).</td>
 269           </tr>
 270           <tr>
 271             <td class="nnns top" />
 272             <td class="nsnn top">
 273               <br />
 274             </td>
 275           </tr>
 276           <tr>
 277             <td class="snns top" id="ldt2">
 278               <span class="date">P2.</span>
 279             </td>
 280             <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="date">2007-01</span>). Presentation at University of Padova (slides <span class="date">in Italian</span>).</td>
 281           </tr>
 282           <tr>
 283             <td class="nnns top" />
 284             <td class="nsnn top">
 285               <br />
 286             </td>
 287           </tr>
 288           <tr>
 289             <td class="snns top" id="ldt1">
 290               <span class="date">P1.</span>
 291             </td>
 292             <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="date">2005-12</span>). Presentation at University of Bologna (slides <span class="date">in Italian</span>).</td>
 293           </tr>
 294           <tr>
 295             <td class="nnss top" />
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