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   6   <meta content="Ferruccio Guidi" name="author">
   7   <meta content="The formal system λδ" name="description">
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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       <h3><img style="width: 32px; height: 32px;"
  45  alt="[Basic
  46                   lambdadelta Logo]"
  47  title="Basic lambdadelta" src="images/basic_32.png"> Basic λδ version
  48 2 (in progress):</h3>
  49 The <span style="font-weight: bold;">main source of
  50 information</span> is <span style="font-weight: bold;">Resource P8</span>.<br>
  51       <br>
  52       <table style="text-align: left; width: 100%;" border="0"
  53  cellpadding="2" cellspacing="2">
  54         <tbody>
  55           <tr>
  56             <td style="vertical-align: top;">R5.<br>
  57             </td>
  58             <td style="vertical-align: top;"><a name="ldp7"></a>F.
  59 Guidi: <a href="download/cie_2010.pdf"><span
  60  style="font-style: italic;">An Efficient Validation Procedure for the
  61 Formal System </span><span style="font-style: italic;">λδ</span></a><span
  62  style="font-style: italic;"></span> (<span style="font-weight: bold;">2010-07</span>).
  63
  64 In
  65
  66             <span style="font-style: italic;">CiE 2010 Local Proceedings</span>.
  67
  68 University
  69 of
  70 Azores, CMATI Booklet, pp. 204-213. <a
  71  href="implementation.html#bibtex">BibTeX entry</a>.<br>
  72             <br>
  73             </td>
  74           </tr>
  75           <tr>
  76             <td style="vertical-align: top;">R4.<br>
  77             </td>
  78             <td style="vertical-align: top;"> <a name="ldp6"></a>F.
  79 Guidi: <a
  80  href="http://www.informatica.unibo.it/it/ricerca/technical-report/2009/UBLCS-2009-16"><span
  81  style="font-style: italic;">Landau's "Grundlagen der Analysis" from
  82 Automath to lambda-delta</span></a> (<span style="font-weight: bold;">2009-09)</span>.
  83
  84 University
  85 of
  86 Bologna, technical report UBLCS-2009-16. <a
  87  href="implementation.html#bibtex">BibTeX entry</a>.<br>
  88             <div style="text-align: left;"><br>
  89             </div>
  90             </td>
  91           </tr>
  92           <tr>
  93             <td style="vertical-align: top;">P8.<br>
  94             </td>
  95             <td style="vertical-align: top;"><a name="ldt8"></a>F.Guidi:
  96             <a style="font-style: italic;"
  97  href="download/ld_talk_8s.pdf">The Formal System λδ and the "Three
  98 Problems"</a> (<span style="font-weight: bold;">2014-06</span>).
  99 Presentation at University of Bologna (slides).<br>
 100             <br>
 101             </td>
 102           </tr>
 103           <tr>
 104             <td style="vertical-align: top;">P7.<br>
 105             </td>
 106             <td style="vertical-align: top;"><a name="ldt7"></a>F.
 107 Guidi: <a href="download/ld_talk_7s.pdf"><span
 108  style="font-style: italic;">An Efficient Validation Procedure for the
 109 Formal System λδ</span></a> (<span style="font-weight: bold;">2010-07</span>).
 110
 111 Presentation
 112 at
 113 CiE 2010 (slides).<br>
 114             <br>
 115             </td>
 116           </tr>
 117           <tr>
 118             <td style="vertical-align: top;">P6.<br>
 119             </td>
 120             <td style="vertical-align: top;"><a name="ldt6"></a>F.
 121 Guidi: <a href="download/ld_talk_6s.pdf"><span
 122  style="font-style: italic;">A Validator for the Formal System λδ</span></a>
 123 (revised <span style="font-weight: bold;">2010-02</span>).
 124 Presentation at University of Bologna (slides). </td>
 125           </tr>
 126         </tbody>
 127       </table>
 128       <h3><img style="width: 32px; height: 32px;"
 129  alt="[Basic
 130                   lambdadelta Logo]"
 131  title="Basic lambdadelta" src="images/basic_32.png"> Basic λδ version
 132 1 (dismissed):</h3>
 133 The <span style="font-weight: bold;">main source of
 134 information</span> is <span style="font-weight: bold;">Resource J1</span>.
 135 A <span style="font-weight: bold;">summary</span> is found in <span
 136  style="font-weight: bold;">Resource P5</span>.<br>
 137       <br>
 138       <table style="text-align: left; width: 100%;" border="0"
 139  cellpadding="2" cellspacing="2">
 140         <tbody>
 141           <tr>
 142             <td style="vertical-align: top;">J1.<br>
 143             </td>
 144             <td style="vertical-align: top;"><a name="ldp5"></a>F.
 145 Guidi: <a href="http://doi.acm.org/10.1145/1614431.1614436"><span
 146  style="font-style: italic;">The Formal System λδ</span></a> (<span
 147  style="font-weight: bold;">2009-11</span>). In ACM ToCL 11(1), pp.
 148 5:1-5:37 (<a href="http://tocl.acm.org/accepted/335guidi.pdf">accepted</a>
 149             <span style="font-weight: bold;">2008-07</span>). CoRR
 150 identifier <a href="http://arxiv.org/abs/cs/0611040"><span
 151  style="font-style: italic;"></span>cs/0611040</a> [v10] (revised <span
 152  style="font-weight: bold;">2008-09</span>). <a
 153  href="implementation.html#bibtex">BibTeX entry</a>.<br>
 154             <br>
 155             </td>
 156           </tr>
 157           <tr>
 158             <td style="vertical-align: top;">R3.<br>
 159             </td>
 160             <td style="vertical-align: top;"><a name="ldp4"></a>F.
 161 Guidi: <a href="download/cie_2007.pdf"><span
 162  style="font-style: italic;">Lambda Types on the Lambda Calculus with
 163 Abbreviations</span></a> (<span style="font-weight: bold;">2007-06</span>).
 164
 165 In
 166
 167             <span style="font-style: italic;">CiE 2007 Local Proceedings</span>.
 168
 169 University
 170 of
 171 Siena, technical report 487, p. 387 (abstract of a
 172 presentation). <a href="implementation.html#bibtex">BibTeX entry</a>.<br>
 173             <br>
 174             </td>
 175           </tr>
 176           <tr>
 177             <td style="vertical-align: top;">R2.<br>
 178             </td>
 179             <td style="vertical-align: top;"><a name="ldp3"></a>F.
 180 Guidi: <a
 181  href="http://www.informatica.unibo.it/it/ricerca/technical-report/2006/UBLCS-2006-25"><span
 182  style="font-style: italic;">Lambda Types on the Lambda Calculus with
 183 Abbreviations</span></a> (<span style="font-weight: bold;">2006-11</span>).
 184
 185 University
 186 of
 187 Bologna, technical report UBLCS-2006-25. <a
 188  href="implementation.html#bibtex">BibTeX entry</a>.<br>
 189             <br>
 190             </td>
 191           </tr>
 192           <tr>
 193             <td style="vertical-align: top;">R1.<br>
 194             </td>
 195             <td style="vertical-align: top;"><a name="ldp2"></a>F.
 196 Guidi: <a style="font-style: italic;"
 197  href="http://www.informatica.unibo.it/it/ricerca/technical-report/2006/UBLCS-2006-01">Lambda
 198
 199 Types
 200 on
 201 the Lambda Calculus with Abbreviations: a Certified
 202 Specification</a> (<span style="font-weight: bold;">2006-01</span>).
 203 University of Bologna, technical report UBLCS-2006-01. <a
 204  href="implementation.html#bibtex">BibTeX entry</a>.<br>
 205             <br>
 206             </td>
 207           </tr>
 208           <tr>
 209             <td style="vertical-align: top;">P5.<br>
 210             </td>
 211             <td style="vertical-align: top;"><a name="ldt5"></a>F.
 212 Guidi: <a style="font-style: italic;" href="download/ld_talk_5s.pdf">The
 213
 214 Formal
 215 System
 216             </a><a href="download/cie_2010.pdf"><span
 217  style="font-style: italic;">λδ</span></a> (<span
 218  style="font-weight: bold;">2008-10</span>). Presentation at "Advances
 219 in Constructive Topology and Logical Foundations" (slides).<br>
 220             <br>
 221             </td>
 222           </tr>
 223           <tr>
 224             <td style="vertical-align: top;">P4.<br>
 225             </td>
 226             <td style="vertical-align: top;"><a name="ldt4"></a>F.
 227 Guidi: <a href="download/ld_talk_4s.pdf"><span
 228  style="font-style: italic;">Towards the Unification of Terms, Types
 229 and Contexts</span></a> (<span style="font-weight: bold;">2008-03</span>).
 230
 231 Presentation
 232 at
 233 Types 2008 (slides).<br>
 234             <br>
 235             </td>
 236           </tr>
 237           <tr>
 238             <td style="vertical-align: top;">P3.<br>
 239             </td>
 240             <td style="vertical-align: top;"><a name="ldt3"></a>F.
 241 Guidi: <a href="download/ld_talk_3s.pdf"><span
 242  style="font-style: italic;">Lambda Types on the Lambda Calculus with
 243 Abbreviations</span></a> (<span style="font-weight: bold;">2007-06</span>).
 244
 245 Presentation
 246 at
 247 CiE 2007 (slides).<br>
 248             <br>
 249             </td>
 250           </tr>
 251           <tr>
 252             <td style="vertical-align: top;">P2.<br>
 253             </td>
 254             <td style="vertical-align: top;"><a name="ldt2"></a>F.
 255 Guidi: <a href="download/ld_talk_2s.pdf"><span
 256  style="font-style: italic;">Lambda Tipi sul Lambda Calcolo con
 257 Abbreviazioni</span></a> (<span style="font-weight: bold;">2007-01</span>).
 258
 259 Presentation
 260 at
 261 University of Padova (slides <span style="font-weight: bold;">in
 262 Italian</span>).<br>
 263             <br>
 264             </td>
 265           </tr>
 266           <tr>
 267             <td style="vertical-align: top;">P1.<br>
 268             </td>
 269             <td style="vertical-align: top;"><a name="ldt1"></a>F.
 270 Guidi: <a href="download/ld_talk_1s.pdf"><span
 271  style="font-style: italic;">Lambda Tipi sul Lambda Calcolo con
 272 Abbreviazioni: una Specifica Certificata</span></a> (<span
 273  style="font-weight: bold;">2005-12</span>). Presentation at University
 274 of Bologna (slides <span style="font-weight: bold;">in
 275 Italian</span>).<br>
 276             </td>
 277           </tr>
 278         </tbody>
 279       </table>
 280       </td>
 281     </tr>
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