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+
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Currently the <span style="font-weight: bold;">main
source of
information</span> on λδ (version 1) is <span style="font-weight: bold;">Resource
- 1.1</span> below.<br>
+ 1.9</span> below.<br>
A <span style="font-weight: bold;">summary</span> of
basic λδ (version
1) is found in <span style="font-weight: bold;">Resource
<table style="text-align: left; width: 100%;" border="0" cellpadding="2" cellspacing="2">
<tbody>
<tr>
- <td style="vertical-align: top;">2.1.<br>
+ <td style="vertical-align: top;">2.4.<br>
</td>
<td style="vertical-align: top;"><a name="ldp7"></a>F.
Guidi: <a href="download/cie_2010.pdf"><span style="font-style: italic;">An
</td>
</tr>
<tr>
- <td style="vertical-align: top;">2.2.<br>
+ <td style="vertical-align: top;">2.3.<br>
</td>
<td style="vertical-align: top;"> <a name="ldp6"></a>F.
Guidi:
</td>
</tr>
<tr>
- <td style="vertical-align: top;">2.3.<br>
+ <td style="vertical-align: top;">2.2.<br>
</td>
<td style="vertical-align: top;"><a name="ldt7"></a>F.
Guidi: <a href="download/ld_talk_7s.pdf"><span style="font-style: italic;">An
</td>
</tr>
<tr>
- <td style="vertical-align: top;">2.4.<br>
+ <td style="vertical-align: top;">2.1.<br>
</td>
<td style="vertical-align: top;"><a name="ldt6"></a>F.
Guidi: <a href="download/ld_talk_6s.pdf"><span style="font-style: italic;">A
<table style="text-align: left; width: 100%;" border="0" cellpadding="2" cellspacing="2">
<tbody>
<tr>
- <td style="vertical-align: top;">1.1.<br>
+ <td style="vertical-align: top;">1.9.<br>
</td>
<td style="vertical-align: top;"><a name="ldp5"></a>F.
Guidi:
</td>
</tr>
<tr>
- <td style="vertical-align: top;">1.2.<br>
+ <td style="vertical-align: top;">1.8.<br>
</td>
<td style="vertical-align: top;"><a name="ldp4"></a>F.
Guidi: <a href="download/cie_2007.pdf"><span style="font-style: italic;">Lambda
</td>
</tr>
<tr>
- <td style="vertical-align: top;">1.3.<br>
+ <td style="vertical-align: top;">1.7.<br>
</td>
<td style="vertical-align: top;"><a name="ldp3"></a>F.
Guidi: <a href="http://www.cs.unibo.it/pub/TR/UBLCS/ABSTRACTS/2006.bib?ncstrl.cabernet//BOLOGNA-UBLCS-2006-25"><span style="font-style: italic;">Lambda Types on
</td>
</tr>
<tr>
- <td style="vertical-align: top;">1.4.<br>
+ <td style="vertical-align: top;">1.6.<br>
</td>
<td style="vertical-align: top;"><a name="ldp2"></a>F.
Guidi: <a style="font-style: italic;" href="http://www.cs.unibo.it/pub/TR/UBLCS/ABSTRACTS/2006.bib?ncstrl.cabernet//BOLOGNA-UBLCS-2006-01">Lambda
<td style="vertical-align: top;"><a name="ldt5"></a>F.
Guidi: <a style="font-style: italic;" href="download/ld_talk_5s.pdf">The
Formal
- System lambdadelta</a>
+ System </a><a href="download/cie_2010.pdf"><span style="font-style: italic;">λδ</span></a>
(<span style="font-weight: bold;">2008-10</span>).
Presentation at
"Advances in Constructive Topology and Logical
</td>
</tr>
<tr>
- <td style="vertical-align: top;">1.6.<br>
+ <td style="vertical-align: top;">1.4.<br>
</td>
<td style="vertical-align: top;"><a name="ldt4"></a>F.
Guidi: <a href="download/ld_talk_4s.pdf"><span style="font-style: italic;">Towards
</td>
</tr>
<tr>
- <td style="vertical-align: top;">1.7.<br>
+ <td style="vertical-align: top;">1.3.<br>
</td>
<td style="vertical-align: top;"><a name="ldt3"></a>F.
Guidi: <a href="download/ld_talk_3s.pdf"><span style="font-style: italic;">Lambda
</td>
</tr>
<tr>
- <td style="vertical-align: top;">1.8.<br>
+ <td style="vertical-align: top;">1.2.<br>
</td>
<td style="vertical-align: top;"><a name="ldt2"></a>F.
Guidi: <a href="download/ld_talk_2s.pdf"><span style="font-style: italic;">Lambda
</td>
</tr>
<tr>
- <td style="vertical-align: top;">1.9.<br>
+ <td style="vertical-align: top;">1.1.<br>
</td>
<td style="vertical-align: top;"><a name="ldt1"></a>F.
Guidi:
<br>
<a href="http://validator.w3.org/check?uri=referer"><img alt="[Valid HTML 4.01 Transitional]" title="Valid HTML 4.01
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<br>
- Last update 2012-12-01 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
+ Last update 2012-12-02 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
Guidi</a><br>
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+
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+
<meta content="text/html; charset=UTF-8" http-equiv="content-type"><title>λδ home page</title>
<br>
</li>
<li><a name="ldp1"></a>F. Guidi: <a href="download/lambdadelta_1.tar.gz"><span style="font-style: italic;">lambdadelta_1</span></a>
- (revised <span style="font-weight: bold;">2011-09</span>).
+ (revised <span style="font-weight: bold;">2012-10</span>).
Formal
specification for <span style="font-weight: bold;">Coq
7.3.1</span>
<span style="font-weight: bold;"></span></li>
</ul>
<ul>
- <li><span style="font-weight: bold;">Access:</span> <a href="static/lddl/">static pages</a> (updated <span style="font-weight: bold;">2011-09</span>), <a href="download/lddl.tar.bz2">data set</a> (updated <span style="font-weight: bold;">2011-09</span>), <a href="http://lambdadelta.info/xml">HELM server URL</a>
- (updated <span style="font-weight: bold;">2011-09</span>).</li>
+ <li><span style="font-weight: bold;">Access:</span> <a href="static/lddl/">static pages</a> (updated <span style="font-weight: bold;">2012-10</span>), <a href="download/lddl.tar.bz2">data set</a> (updated <span style="font-weight: bold;">2012-10</span>), <a href="http://lambdadelta.info/xml">HELM server URL</a>
+ (updated <span style="font-weight: bold;">2012-10</span>).</li>
</ul>
<ul>
<li><span style="font-weight: bold;">Examples:</span> <a href="static/lddl/brg_si/grundlagen/l/e/st/eq/landau/n/rt/rp/r/c/8283/t234.ld.html">Grundlagen's
<li><a name="bibtex"></a>A
BibTeX database of λδ documentation: <a href="download/lambdadelta.bib"><span style="font-style: italic;">lambdadelta.bib</span></a>,
<a style="font-style: italic;" href="download/lambdadelta.txt">lambdadelta.txt</a>
- (revised <span style="font-weight: bold;">2011-09</span>).</li>
+ (revised <span style="font-weight: bold;">2012-10</span>).</li>
</ul>
<ul>
<li>A <a href="http://www.jedsoft.org/jed/">Jed mode</a>
Transitional" src="http://www.w3.org/Icons/valid-html401" style="border: 0px solid ; width: 88px; height: 31px;"></a> <a href="http://www.anybrowser.org/campaign/"><img alt="[Use Any
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<br>
- Last update 2012-12-01 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
+ Last update 2012-12-02 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
Guidi</a><br>
</div>
<html dir="ltr" lang="en-us"><head>
+
<meta content="text/html; charset=UTF-8" http-equiv="content-type"><title>λδ home page</title>
<meta content="Ferruccio Guidi" name="author">
The formal system λδ
(\lambda\delta) is a typed lambda calculus that pursues the static and
dynamic unification of terms, types, environments and contexts while
-enjoying a well-conceived meta-theory, which includes the commonly
+enjoying a well-conceived theory, which includes the commonly
desired properties.<br>
<br>
λδ takes some features from the calculi of the Automath family and
ζ-contraction and θ-swap. On the other hand,
η-contraction is not included.<br>
<br>
-The meta-theory of λδ includes important properties such as the
+The theory of λδ includes important properties such as the
confluence of reduction, the correctness of types, the
uniqueness of types up to conversion, the subject reduction of the type
assignment, the strong normalization of the typed terms. The
<br>
<a href="http://validator.w3.org/check?uri=referer"><img alt="[Valid HTML 4.01 Transitional]" title="Valid HTML 4.01 Transitional" src="http://www.w3.org/Icons/valid-html401" style="border: 0px solid ; width: 88px; height: 31px;"></a> <a href="http://www.anybrowser.org/campaign/"><img alt="[Use Any Browser Here]" title="Use Any Browser Here" src="images/globe_trans.png" style="border: 0px solid ; width: 147px; height: 42px;"></a> <img style="width: 88px; height: 31px;" alt="[PNG Used Here]" title="PNG Used Here" src="images/PNGnow2.png"><br>
<br>
-Last update 2012-12-01 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
+Last update 2012-12-02 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
Guidi</a><br>
</div>