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   8     <meta name="author" content="Ferruccio Guidi" />
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  22     <div class="head1">The Formal System λδ (\lambda\delta)</div>
  23     <div class="spacer">
  24       <img class="rule" alt="[Spacer]" title="lambdadelta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
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  26     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
  27       <br />
  28     </div>
  29     <div xmlns:ld="http://lambdadelta.info/" class="text">
  30       <table cellpadding="4" cellspacing="0">
  31         <tbody>
  32           <tr>
  33             <td class="snns capitalize italic sky">
  34               <a href="http://lambdadelta.info/index.html">home</a>
  35             </td>
  36             <td class="snns capitalize italic magenta">
  37               <a href="http://lambdadelta.info/news.html">news</a>
  38             </td>
  39             <td class="snns capitalize italic orange">
  40               <a href="http://lambdadelta.info/documentation.html">documentation</a>
  41             </td>
  42             <td class="snns capitalize italic green">
  43               <a href="http://lambdadelta.info/specification.html">specification</a>
  44             </td>
  45             <td class="snnn capitalize italic green">
  46               <br />
  47             </td>
  48             <td class="snns capitalize italic green">
  49               <a href="http://lambdadelta.info/implementation.html">implementation</a>
  50             </td>
  51             <td class="ssnn capitalize italic green">
  52               <br />
  53             </td>
  54           </tr>
  55           <tr>
  56             <td class="snns capitalize sky">
  57               <a href="http://lambdadelta.info/index.html#foreword">foreword</a>
  58             </td>
  59             <td class="snns capitalize magenta">
  60               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
  61             </td>
  62             <td class="snns capitalize orange">
  63               <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
  64             </td>
  65             <td class="snns capitalize green">
  66               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
  67             </td>
  68             <td class="snnn capitalize green">(<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>
  69             <td class="snns capitalize green">
  70               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
  71             </td>
  72             <td class="ssnn capitalize green">(<a href="http://lambdadelta.info/static/lddl/">static LDDL directory</a>)</td>
  73           </tr>
  74           <tr>
  75             <td class="snss capitalize sky">
  76               <a href="http://lambdadelta.info/index.html#citations">citations</a>
  77             </td>
  78             <td class="snss capitalize magenta">
  79               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
  80             </td>
  81             <td class="snss capitalize orange">
  82               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
  83             </td>
  84             <td class="snss capitalize green">
  85               <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
  86             </td>
  87             <td class="snsn capitalize green">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
  88             <td class="snss capitalize green">
  89               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
  90             </td>
  91             <td class="sssn capitalize green">
  92               <br />
  93             </td>
  94           </tr>
  95         </tbody>
  96       </table>
  97     </div>
  98     <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="bibtex">Documentation <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b4.png" />
  99     </div>
 100     <div xmlns:ld="http://lambdadelta.info/" class="text">
 101       BibTeX database of λδ documentation:
 102       <span class="emph alpha">download</span>
 103       <a href="http://lambdadelta.info/download/lambdadelta.bib">lambdadelta.bib</a>,
 104       <span class="emph alpha">view</span>
 105       <a href="http://lambdadelta.info/download/lambdadelta.txt">lambdadelta.txt</a>
 106       (revised <span class="emph gamma">2014-10</span>).
 107    </div>
 108     <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="v2">
 109       <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b4.png" /> λδ version 2 (active)</div>
 110     <div xmlns:ld="http://lambdadelta.info/" class="text">
 111       The main source of information is <span class="emph alpha">J2</span>.
 112    </div>
 113     <div xmlns:ld="http://lambdadelta.info/" class="text">
 114       <table cellpadding="4" cellspacing="0">
 115         <tbody>
 116           <tr>
 117             <td class="snns top" id="ldJ2">
 118               <span class="emph alpha">J2.</span>
 119             </td>
 120             <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/download/basic2a.pdf">The Formal System λδ Revised - Stage A: Extending the Applicability Condition</a> (<span class="emph gamma">2014-11</span>). Submitted to ACM ToCL. CoRR identifier <a href="http://arxiv.org/abs/1411.0154">1411.0154</a> [v1].</td>
 121           </tr>
 122           <tr>
 123             <td class="nnns top" />
 124             <td class="nsnn top">
 125               <br />
 126             </td>
 127           </tr>
 128           <tr>
 129             <td class="snns top" id="ldR5">
 130               <span class="emph alpha">R5.</span>
 131             </td>
 132             <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>
 133           </tr>
 134           <tr>
 135             <td class="nnns top" />
 136             <td class="nsnn top">
 137               <br />
 138             </td>
 139           </tr>
 140           <tr>
 141             <td class="snns top" id="ldR4">
 142               <span class="emph alpha">R4.</span>
 143             </td>
 144             <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>
 145           </tr>
 146           <tr>
 147             <td class="nnns top" />
 148             <td class="nsnn top">
 149               <br />
 150             </td>
 151           </tr>
 152           <tr>
 153             <td class="snns top" id="ldP8">
 154               <span class="emph alpha">P8.</span>
 155             </td>
 156             <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 (slides).</td>
 157           </tr>
 158           <tr>
 159             <td class="nnns top" />
 160             <td class="nsnn top">
 161               <br />
 162             </td>
 163           </tr>
 164           <tr>
 165             <td class="snns top" id="ldP7">
 166               <span class="emph alpha">P7.</span>
 167             </td>
 168             <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>
 169           </tr>
 170           <tr>
 171             <td class="nnns top" />
 172             <td class="nsnn top">
 173               <br />
 174             </td>
 175           </tr>
 176           <tr>
 177             <td class="snns top" id="ldP6">
 178               <span class="emph alpha">P6.</span>
 179             </td>
 180             <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>
 181           </tr>
 182           <tr>
 183             <td class="nnns top" />
 184             <td class="nsnn top">
 185               <br />
 186             </td>
 187           </tr>
 188           <tr>
 189             <td class="snns top" id="ldV2">
 190               <span class="emph alpha">V2.</span>
 191             </td>
 192             <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/version_2.html">lambdadelta_2</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>
 193           </tr>
 194           <tr>
 195             <td class="nnss top" />
 196             <td class="nssn top">
 197               <br />
 198             </td>
 199           </tr>
 200         </tbody>
 201       </table>
 202     </div>
 203     <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="v1">
 204       <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b6.png" /> λδ version 1 (superseded)</div>
 205     <div xmlns:ld="http://lambdadelta.info/" class="text">
 206       The main source of information is <span class="emph alpha">J1</span>.
 207       A summary is available in <span class="emph alpha">P5</span>.
 208    </div>
 209     <div xmlns:ld="http://lambdadelta.info/" class="text">
 210       <table cellpadding="4" cellspacing="0">
 211         <tbody>
 212           <tr>
 213             <td class="snns top" id="ldJ1">
 214               <span class="emph alpha">J1.</span>
 215             </td>
 216             <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 (<a href="http://tocl.acm.org/accepted/335guidi.pdf">accepted</a>
 217               <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>
 218           </tr>
 219           <tr>
 220             <td class="nnns top" />
 221             <td class="nsnn top">
 222               <br />
 223             </td>
 224           </tr>
 225           <tr>
 226             <td class="snns top" id="ldR3">
 227               <span class="emph alpha">R3.</span>
 228             </td>
 229             <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>
 230           </tr>
 231           <tr>
 232             <td class="nnns top" />
 233             <td class="nsnn top">
 234               <br />
 235             </td>
 236           </tr>
 237           <tr>
 238             <td class="snns top" id="ldR2">
 239               <span class="emph alpha">R2.</span>
 240             </td>
 241             <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>
 242           </tr>
 243           <tr>
 244             <td class="nnns top" />
 245             <td class="nsnn top">
 246               <br />
 247             </td>
 248           </tr>
 249           <tr>
 250             <td class="snns top" id="ldR1">
 251               <span class="emph alpha">R1.</span>
 252             </td>
 253             <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>
 254           </tr>
 255           <tr>
 256             <td class="nnns top" />
 257             <td class="nsnn top">
 258               <br />
 259             </td>
 260           </tr>
 261           <tr>
 262             <td class="snns top" id="ldP5">
 263               <span class="emph alpha">P5.</span>
 264             </td>
 265             <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>
 266           </tr>
 267           <tr>
 268             <td class="nnns top" />
 269             <td class="nsnn top">
 270               <br />
 271             </td>
 272           </tr>
 273           <tr>
 274             <td class="snns top" id="ldP4">
 275               <span class="emph alpha">P4.</span>
 276             </td>
 277             <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>
 278           </tr>
 279           <tr>
 280             <td class="nnns top" />
 281             <td class="nsnn top">
 282               <br />
 283             </td>
 284           </tr>
 285           <tr>
 286             <td class="snns top" id="ldP3">
 287               <span class="emph alpha">P3.</span>
 288             </td>
 289             <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>
 290           </tr>
 291           <tr>
 292             <td class="nnns top" />
 293             <td class="nsnn top">
 294               <br />
 295             </td>
 296           </tr>
 297           <tr>
 298             <td class="snns top" id="ldP2">
 299               <span class="emph alpha">P2.</span>
 300             </td>
 301             <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>
 302           </tr>
 303           <tr>
 304             <td class="nnns top" />
 305             <td class="nsnn top">
 306               <br />
 307             </td>
 308           </tr>
 309           <tr>
 310             <td class="snns top" id="ldP1">
 311               <span class="emph alpha">P1.</span>
 312             </td>
 313             <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>
 314           </tr>
 315           <tr>
 316             <td class="nnns top" />
 317             <td class="nsnn top">
 318               <br />
 319             </td>
 320           </tr>
 321           <tr>
 322             <td class="snns top" id="ldV1">
 323               <span class="emph alpha">V1.</span>
 324             </td>
 325             <td class="ssnn top">F. Guidi: <a href="http://lambdadelta.info/version_1.html">lambdadelta_1</a> (revised <span class="emph delta">2012-10</span>). Formal specification for the proof assistant Coq 7.3.1 (scripts). <a href="http://lambdadelta.info/documentation.html#bibtex">BibTeX entry</a>.</td>
 326           </tr>
 327           <tr>
 328             <td class="nnss top" />
 329             <td class="nssn top">
 330               <br />
 331             </td>
 332           </tr>
 333         </tbody>
 334       </table>
 335     </div>
 336     <div class="spacer">
 337       <img class="rule" alt="[Spacer]" title="lambdadelta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
 338     </div>
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 361     </div>
 362     <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Thu, 15 Jan 2015 16:54:44 +0100</div>
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