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   6   <meta content="Ferruccio Guidi" name="author">
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  15 <h1>The Formal System λδ (\lambda\delta)<br>
  16 </h1>
  17 <h2>Towards the unification of terms, types, environments and contexts</h2>
  18 <img style="width: 95%; height: 4px;" alt="[Separator]"
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  26       <ul>
  27         <li><a href="index.html">Foreword</a></li>
  28       </ul>
  29       <ul>
  30         <li><a href="news.html">News</a></li>
  31       </ul>
  32       <ul>
  33         <li>Papers</li>
  34       </ul>
  35       <ul>
  36         <li><a href="implementation.html">Resources</a><br>
  37         </li>
  38       </ul>
  39       </td>
  40       <td style="vertical-align: top; text-align: left;">
  41       <h3 style="text-align: right;">Documentation <img
  42  style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly"
  43  src="images/b5.png"></h3>
  44 Currently the <span style="font-weight: bold;">main source of
  45 information</span> on λδ (version 1) is <span
  46  style="font-weight: bold;">Resource J1</span> below.<br>
  47 A <span style="font-weight: bold;">summary</span> of basic λδ (version
  48 1) is found in <span style="font-weight: bold;">Resource P5</span>
  49 below.<br>
  50       <h3><img style="width: 32px; height: 32px;"
  51  alt="[Basic
  52                   lambdadelta Logo]"
  53  title="Basic lambdadelta" src="images/basic_32.png"> Basic λδ version
  54 2 (in progress):</h3>
  55       <table style="text-align: left; width: 100%;" border="0"
  56  cellpadding="2" cellspacing="2">
  57         <tbody>
  58           <tr>
  59             <td style="vertical-align: top;">R5.<br>
  60             </td>
  61             <td style="vertical-align: top;"><a name="ldp7"></a>F.
  62 Guidi: <a href="download/cie_2010.pdf"><span
  63  style="font-style: italic;">An Efficient Validation Procedure for the
  64 Formal System </span><span style="font-style: italic;">λδ</span></a><span
  65  style="font-style: italic;"></span> (<span style="font-weight: bold;">2010-07</span>).
  66
  67 In
  68             <span style="font-style: italic;">CiE 2010 Local Proceedings</span>.
  69
  70 University
  71 of Azores, CMATI Booklet, pp. 204-213. <a
  72  href="implementation.html#bibtex">BibTeX entry</a>.<br>
  73             <br>
  74             </td>
  75           </tr>
  76           <tr>
  77             <td style="vertical-align: top;">R4.<br>
  78             </td>
  79             <td style="vertical-align: top;"> <a name="ldp6"></a>F.
  80 Guidi: <a
  81  href="http://www.informatica.unibo.it/it/ricerca/technical-report/2009/UBLCS-2009-16"><span
  82  style="font-style: italic;">Landau's "Grundlagen der Analysis" from
  83 Automath to lambda-delta</span></a> (<span style="font-weight: bold;">2009-09)</span>.
  84
  85 University
  86 of Bologna, technical report UBLCS-2009-16. <a
  87  href="implementation.html#bibtex">BibTeX entry</a>.<br>
  88             <br>
  89             </td>
  90           </tr>
  91           <tr>
  92             <td style="vertical-align: top;">P7.<br>
  93             </td>
  94             <td style="vertical-align: top;"><a name="ldt7"></a>F.
  95 Guidi: <a href="download/ld_talk_7s.pdf"><span
  96  style="font-style: italic;">An Efficient Validation Procedure for the
  97 Formal System λδ</span></a> (<span style="font-weight: bold;">2010-07</span>).
  98
  99 Presentation
 100 at CiE 2010 (slides).<br>
 101             <br>
 102             </td>
 103           </tr>
 104           <tr>
 105             <td style="vertical-align: top;">P6.<br>
 106             </td>
 107             <td style="vertical-align: top;"><a name="ldt6"></a>F.
 108 Guidi: <a href="download/ld_talk_6s.pdf"><span
 109  style="font-style: italic;">A Validator for the Formal System λδ</span></a>
 110 (revised <span style="font-weight: bold;">2010-02</span>).
 111 Presentation at the University of Bologna (slides). </td>
 112           </tr>
 113         </tbody>
 114       </table>
 115       <h3><img style="width: 32px; height: 32px;"
 116  alt="[Basic
 117                   lambdadelta Logo]"
 118  title="Basic lambdadelta" src="images/basic_32.png"> Basic λδ version
 119 1 (dismissed):</h3>
 120       <table style="text-align: left; width: 100%;" border="0"
 121  cellpadding="2" cellspacing="2">
 122         <tbody>
 123           <tr>
 124             <td style="vertical-align: top;">J1.<br>
 125             </td>
 126             <td style="vertical-align: top;"><a name="ldp5"></a>F.
 127 Guidi: <a href="http://doi.acm.org/10.1145/1614431.1614436"><span
 128  style="font-style: italic;">The Formal System λδ</span></a> (<span
 129  style="font-weight: bold;">2009-11</span>). In ACM ToCL 11(1), pp.
 130 5:1-5:37 (<a href="http://tocl.acm.org/accepted/335guidi.pdf">accepted</a>
 131             <span style="font-weight: bold;">2008-07</span>). CoRR
 132 identifier <a href="http://arxiv.org/abs/cs/0611040"><span
 133  style="font-style: italic;"></span>cs/0611040</a> [v10] (revised <span
 134  style="font-weight: bold;">2008-09</span>). <a
 135  href="implementation.html#bibtex">BibTeX entry</a>.<br>
 136             <br>
 137             </td>
 138           </tr>
 139           <tr>
 140             <td style="vertical-align: top;">R3.<br>
 141             </td>
 142             <td style="vertical-align: top;"><a name="ldp4"></a>F.
 143 Guidi: <a href="download/cie_2007.pdf"><span
 144  style="font-style: italic;">Lambda Types on the Lambda Calculus with
 145 Abbreviations</span></a> (<span style="font-weight: bold;">2007-06</span>).
 146
 147 In
 148             <span style="font-style: italic;">CiE 2007 Local Proceedings</span>.
 149
 150 University
 151 of Siena, technical report 487, p. 387 (abstract of a
 152 presentation). <a href="implementation.html#bibtex">BibTeX entry</a>.<br>
 153             <br>
 154             </td>
 155           </tr>
 156           <tr>
 157             <td style="vertical-align: top;">R2.<br>
 158             </td>
 159             <td style="vertical-align: top;"><a name="ldp3"></a>F.
 160 Guidi: <a
 161  href="http://www.informatica.unibo.it/it/ricerca/technical-report/2006/UBLCS-2006-25"><span
 162  style="font-style: italic;">Lambda Types on the Lambda Calculus with
 163 Abbreviations</span></a> (<span style="font-weight: bold;">2006-11</span>).
 164
 165 University
 166 of Bologna, technical report UBLCS-2006-25. <a
 167  href="implementation.html#bibtex">BibTeX entry</a>.<br>
 168             <br>
 169             </td>
 170           </tr>
 171           <tr>
 172             <td style="vertical-align: top;">R1.<br>
 173             </td>
 174             <td style="vertical-align: top;"><a name="ldp2"></a>F.
 175 Guidi: <a style="font-style: italic;"
 176  href="http://www.informatica.unibo.it/it/ricerca/technical-report/2006/UBLCS-2006-01">Lambda
 177
 178 Types
 179 on the Lambda Calculus with Abbreviations: a Certified
 180 Specification</a> (<span style="font-weight: bold;">2006-01</span>).
 181 University of Bologna, technical report UBLCS-2006-01. <a
 182  href="implementation.html#bibtex">BibTeX entry</a>.<br>
 183             <br>
 184             </td>
 185           </tr>
 186           <tr>
 187             <td style="vertical-align: top;">P5.<br>
 188             </td>
 189             <td style="vertical-align: top;"><a name="ldt5"></a>F.
 190 Guidi: <a style="font-style: italic;" href="download/ld_talk_5s.pdf">The
 191
 192 Formal
 193 System </a><a href="download/cie_2010.pdf"><span
 194  style="font-style: italic;">λδ</span></a> (<span
 195  style="font-weight: bold;">2008-10</span>). Presentation at "Advances
 196 in Constructive Topology and Logical Foundations" (slides).<br>
 197             <br>
 198             </td>
 199           </tr>
 200           <tr>
 201             <td style="vertical-align: top;">P4.<br>
 202             </td>
 203             <td style="vertical-align: top;"><a name="ldt4"></a>F.
 204 Guidi: <a href="download/ld_talk_4s.pdf"><span
 205  style="font-style: italic;">Towards the Unification of Terms, Types
 206 and Contexts</span></a> (<span style="font-weight: bold;">2008-03</span>).
 207
 208 Presentation
 209 at Types 2008 (slides).<br>
 210             <br>
 211             </td>
 212           </tr>
 213           <tr>
 214             <td style="vertical-align: top;">P3.<br>
 215             </td>
 216             <td style="vertical-align: top;"><a name="ldt3"></a>F.
 217 Guidi: <a href="download/ld_talk_3s.pdf"><span
 218  style="font-style: italic;">Lambda Types on the Lambda Calculus with
 219 Abbreviations</span></a> (<span style="font-weight: bold;">2007-06</span>).
 220
 221 Presentation
 222 at CiE 2007 (slides).<br>
 223             <br>
 224             </td>
 225           </tr>
 226           <tr>
 227             <td style="vertical-align: top;">P2.<br>
 228             </td>
 229             <td style="vertical-align: top;"><a name="ldt2"></a>F.
 230 Guidi: <a href="download/ld_talk_2s.pdf"><span
 231  style="font-style: italic;">Lambda Tipi sul Lambda Calcolo con
 232 Abbreviazioni</span></a> (<span style="font-weight: bold;">2007-01</span>).
 233
 234 Presentation
 235 at the University of Padova (slides <span style="font-weight: bold;">in
 236 Italian</span>).<br>
 237             <br>
 238             </td>
 239           </tr>
 240           <tr>
 241             <td style="vertical-align: top;">P1.<br>
 242             </td>
 243             <td style="vertical-align: top;"><a name="ldt1"></a>F.
 244 Guidi: <a href="download/ld_talk_1s.pdf"><span
 245  style="font-style: italic;">Lambda Tipi sul Lambda Calcolo con
 246 Abbreviazioni: una Specifica Certificata</span></a> (<span
 247  style="font-weight: bold;">2005-12</span>). Presentation at the
 248 University of Bologna (slides <span style="font-weight: bold;">in
 249 Italian</span>).<br>
 250             </td>
 251           </tr>
 252         </tbody>
 253       </table>
 254       </td>
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