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  22     <div class="head1">The Formal System λδ (\lambda\delta)</div>
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  33             <td class="snns capitalize italic sky">
  34               <a href="http://lambdadelta.info/index.html">home</a>
  35             </td>
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  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="ssns capitalize italic green">
  49               <a href="http://lambdadelta.info/implementation.html">implementation</a>
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  52           <tr>
  53             <td class="snns capitalize sky">
  54               <a href="http://lambdadelta.info/index.html#foreword">foreword</a>
  55             </td>
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  57               <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
  58             </td>
  59             <td class="snns capitalize orange">
  60               <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
  61             </td>
  62             <td class="snns capitalize green">
  63               <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
  64             </td>
  65             <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>
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  67               <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
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  70           <tr>
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  72               <a href="http://lambdadelta.info/index.html#citations">citations</a>
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  75               <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
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  77             <td class="snss capitalize orange">
  78               <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
  79             </td>
  80             <td class="snss capitalize green">
  81               <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
  82             </td>
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  84               <br />
  85             </td>
  86             <td class="ssss capitalize green">
  87               <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
  88             </td>
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  92     </div>
  93
  94    <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="foreword">Foreword <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b9.png" />
  95     </div>
  96    <div xmlns:ld="http://lambdadelta.info/" class="text">
  97       The formal system λδ (\lambda\delta) is a typed λ-calculus aiming to support
  98       the foundations of Mathematics that require an underlying specification language
  99       (for example the <a href="http://www.math.unipd.it/~maietti/">Minimal Type Theory</a>
 100        and its predecessors).
 101    </div>
 102    <div xmlns:ld="http://lambdadelta.info/" class="text">
 103       λδ is developed in the context of the
 104       <a href="http://helm.cs.unibo.it/">Hypertextual Electronic Library of Mathematics</a>
 105       as a machine-checked digital specification
 106       that is not the formal counterpart of previous informal material.
 107    </div>
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 109       This is the System logo: <a href="http://lambdadelta.info/images/crux_177.png">crux_177.png</a>
 110       (revised <span class="emph alpha">2012-09</span>).
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 121
 122
 123    <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="citations">Citations <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b9.png" />
 124     </div>
 125    <div xmlns:ld="http://lambdadelta.info/" class="text">
 126       This is a list of publications citing λδ (not including our own).
 127    </div>
 128
 129    <ul xmlns:ld="http://lambdadelta.info/" id="C6">
 130       <li>
 131       A. Asperti, W. Ricciotti, C. Sacerdoti Coen, E. Tassi:
 132       <span class="emph alpha">Formal metatheory of programming languages in the Matita interactive theorem prover</span>
 133       (2012). In JAR 49(3), pp. 427-451.
 134    </li>
 135     </ul>
 136
 137    <ul xmlns:ld="http://lambdadelta.info/" id="C5">
 138       <li>
 139       M.E. Maietti:
 140       <span class="emph alpha">Consistency of the minimalist foundation with Church thesis and Bar Induction</span>
 141       (2012). Submitted article.
 142    </li>
 143     </ul>
 144
 145    <ul xmlns:ld="http://lambdadelta.info/" id="C4">
 146       <li>
 147       W. Ricciotti:
 148       <span class="emph alpha">Theoretical and implementation aspects in the mechanization of the metatheory of programming languages</span>
 149       (July 2011). Ph.D. Thesis in Computer Science, Technical Report UBLCS-2011-09, University of Bologna.
 150    </li>
 151     </ul>
 152
 153    <ul xmlns:ld="http://lambdadelta.info/" id="C3">
 154       <li>
 155       C.E. Brown:
 156       <span class="emph alpha">Faithful Reproductions of the Automath Landau Formalization</span>
 157       (2011). Typescript note.
 158    </li>
 159     </ul>
 160
 161    <ul xmlns:ld="http://lambdadelta.info/" id="C2">
 162       <li>
 163       M.E. Maietti:
 164       <span class="emph alpha">A minimalist two-level foundation for constructive mathematics</span>
 165       (2009). In APAL 160(3), pp. 319-354.
 166    </li>
 167     </ul>
 168
 169    <ul xmlns:ld="http://lambdadelta.info/" id="C1">
 170       <li>
 171       V. Rahili:
 172       <span class="emph alpha">First Year Report: Realisability methods of proof and semantics with application to expansion</span>
 173       (July 2007). Typescript note.
 174    </li>
 175     </ul>
 176
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