+
<a
href="http://www.cs.unibo.it/pub/TR/UBLCS/ABSTRACTS/2009.bib?ncstrl.cabernet//BOLOGNA-UBLCS-2009-16"><span
style="font-style: italic;">Landau's
-"Grundlagen der Analysis" from Automath to lambda_delta</span></a> (<span
+"Grundlagen der Analysis" from Automath to lambda-delta</span></a> (<span
style="font-weight: bold;">2009-09)</span>. University of
Bologna, technical report UBLCS-2009-16. <a
href="implementation.html#bibtex">BibTeX entry</a>.<br>
<td style="vertical-align: top;">1.2.<br>
</td>
<td style="vertical-align: top;">F. Guidi: <a
- href="http://www.cs.unibo.it/%7Efguidi/download/cie_2007.pdf"><span
+ href="download/cie_2007.pdf"><span
style="font-style: italic;">Lambda Types on the Lambda Calculus with
Abbreviations</span></a> (<span style="font-weight: bold;">2007-06</span>).
In
+
<span style="font-style: italic;">CiE 2007 Local Proceedings</span>.
University
of
+
<a href="implementation.html#bibtex">BibTeX
entry</a>.<br>
<br>
+
<a href="implementation.html#bibtex">BibTeX
entry</a>.<br>
<br>
<td style="vertical-align: top;">1.6.<br>
</td>
<td style="vertical-align: top;">F. Guidi: <a
- href="http://www.cs.unibo.it/%7Efguidi/download/ld-talk-4.pdf"><span
+ href="download/ld_talk_4s.pdf"><span
style="font-style: italic;">Towards the Unification of Terms, Types
and Contexts</span></a> (<span style="font-weight: bold;">2008-03</span>).
Presentation
<td style="vertical-align: top;">1.7.<br>
</td>
<td style="vertical-align: top;">F. Guidi: <a
- href="http://www.cs.unibo.it/%7Efguidi/download/ld-talk-3.pdf"><span
+ href="download/ld_talk_3s.pdf"><span
style="font-style: italic;">Lambda Types on the Lambda Calculus with
Abbreviations</span></a> (<span style="font-weight: bold;">2007-06</span>).
Presentation
<td style="vertical-align: top;">1.8.<br>
</td>
<td style="vertical-align: top;">F. Guidi: <a
- href="http://www.cs.unibo.it/%7Efguidi/download/ld-talk-2.pdf"><span
+ href="download/ld_talk_2s.pdf"><span
style="font-style: italic;">Lambda Tipi sul Lambda Calcolo con
Abbreviazioni</span></a> (<span style="font-weight: bold;">2007-01</span>).
Presentation
+
<span style="font-weight: bold;">in
Italian</span>).<br>
<br>
</td>
<td style="vertical-align: top;"><a name="bologna1"></a>F.
Guidi: <a
- href="http://www.cs.unibo.it/%7Efguidi/download/ld-talk-1.pdf"><span
+ href="download/ld_talk_1s.pdf"><span
style="font-style: italic;">Lambda Tipi sul Lambda Calcolo con
Abbreviazioni: una Specifica Certificata</span></a> (<span
style="font-weight: bold;">2005-12</span>). Presentation at
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="http://www.cs.unibo.it/%7Efguidi/download/globe-trans.png"
+ src="download/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="http://www.cs.unibo.it/%7Efguidi/download/PNGnow2.png"><br>
<br>
-Last update 201
0-12-14 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
+Last update 201
1-09-09 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
Guidi</a><br>
</div>
</body>
language representation</span> of
λδ meta-theory (powered by the <a href="http://helm.cs.unibo.it/">HELM</a>
rendering engine).<br>
-Remarkably λδ was born and developed in the digital format of <span
+Remarkably, λδ was born and developed in the digital format of <span
style="font-weight: bold;">resource 3</span> below, which is not the
formal counterpart of some informal material previously written on
paper (as it happens for most currently digitalized Mathematics).<br>
<ol>
<li><a name="static"></a>F. Guidi: <a
- style="font-style: italic;" href="static/matita/LAMBDA-TYPES/">LAMBDA-TYPES</a>
-(revised <span style="font-weight: bold;">2008-06</span>). Formal
+ style="font-style: italic;" href="static/matita/lambda_delta/">lambda_delta</a>
+(revised <span style="font-weight: bold;">2011-09</span>). Formal
specification with the proof assistant <a
href="http://matita.cs.unibo.it/">Matita</a> 0.5 (HTML pages generated
by the <a href="http://helm.cs.unibo.it/">HELM</a>
Here are the most relevant theorems proved in the formal specification:
<ul>
<li><a
- href="static/matita/LAMBDA-TYPES/LambdaDelta-1/pr3/pr3/pr3_confluence.con.html">Confluence
+ href="static/matita/lambda_delta/Basic_1/pr3/pr3/pr3_confluence.con.html">Confluence
of
reduction</a> (Church-Rosser property).</li>
<li><a
- href="static/matita/LAMBDA-TYPES/LambdaDelta-1/ty3/props/ty3_correct.con.html">Correctness
+ href="static/matita/lambda_delta/Basic_1/ty3/props/ty3_correct.con.html">Correctness
of
types</a>.</li>
<li><a
- href="static/matita/LAMBDA-TYPES/LambdaDelta-1/ty3/props/ty3_unique.con.html">Uniqueness
+ href="static/matita/lambda_delta/Basic_1/ty3/props/ty3_unique.con.html">Uniqueness
of
types
up
conversion</a>.<br>
</li>
<li><a
- href="static/matita/LAMBDA-TYPES/LambdaDelta-1/ty3/pr3/ty3_sred_pr3.con.html">Subject
+ href="static/matita/lambda_delta/Basic_1/ty3/pr3/ty3_sred_pr3.con.html">Subject
reduction
of
the
type
assignment</a>.</li>
<li><a
- href="static/matita/LAMBDA-TYPES/LambdaDelta-1/ty3/arity_props/ty3_sn3.con.html">Strong
+ href="static/matita/lambda_delta/Basic_1/ty3/arity_props/ty3_sn3.con.html">Strong
normalization
of
the
typed
terms</a>.</li>
<li><a
- href="static/matita/LAMBDA-TYPES/LambdaDelta-1/ty3/dec/ty3_inference.con.html">Decidability
+ href="static/matita/lambda_delta/Basic_1/ty3/dec/ty3_inference.con.html">Decidability
of
the
type
</li>
<li><a name="dynamic"></a>F. Guidi: <a
style="font-style: italic;"
- href="http://mowgli.cs.unibo.it:58080/apply?keys=RT&xmluri=http://helm.cs.unibo.it/helm//html/folder/index.html&prop.media-type=text/html&param.thmedia-type=text/html&param.thkeys=T1%2CT2%2CL%2CE&param.embedkeys=d_c%2CTC1%2CHC2%2CL&param.thencoding=UTF-8&prop.encoding=UTF-8&prop.doctype-public=-//W3C//DTD%20XHTML%201.0%20Transitional//EN&param.doctype-public=-//W3C//DTD%20XHTML%201.0%20Transitional//EN&param.encoding=UTF-8&param.media-type=text/html&param.keys=d_c%2CC1%2CHC2%2CL&profile=default&param.profile=default&param.CICURI=theory:/matita/LAMBDA-TYPES/">LAMBDA-TYPES</a>
-(revised <span style="font-weight: bold;">2008-06</span>). Formal
+ href="http://mowgli.cs.unibo.it:58080/apply?keys=RT&xmluri=http://helm.cs.unibo.it/helm//html/folder/index.html&prop.media-type=text/html&param.thmedia-type=text/html&param.thkeys=T1%2CT2%2CL%2CE&param.embedkeys=d_c%2CTC1%2CHC2%2CL&param.thencoding=UTF-8&prop.encoding=UTF-8&prop.doctype-public=-//W3C//DTD%20XHTML%201.0%20Transitional//EN&param.doctype-public=-//W3C//DTD%20XHTML%201.0%20Transitional//EN&param.encoding=UTF-8&param.media-type=text/html&param.keys=d_c%2CC1%2CHC2%2CL&profile=default&param.profile=default&param.CICURI=theory:/matita/lambda_delta/">lambda_delta</a>
+(revised <span style="font-weight: bold;">2011-09</span>). Formal
specification with the proof assistant <a
href="http://matita.cs.unibo.it/">Matita</a> 0.5 (<a
href="http://helm.cs.unibo.it/">HELM</a> directory).<br>
<br>
</li>
<li><a name="source"></a>F. Guidi: <a
- href="http://www.cs.unibo.it/%7Efguidi/download/LAMBDA-TYPES.tgz"><span
- style="font-style: italic;">LAMBDA-TYPES</span></a> (revised <span
- style="font-weight: bold;">2008-03</span>).
+ href="download/lambda_delta_1.tar.gz"><span
+ style="font-style: italic;">lambda_delta_1</span></a> (revised <span
+ style="font-weight: bold;">2011-09</span>).
Formal specification with the proof assistant <span
style="font-weight: bold;">Coq 7.3.1</span> (source
proof scripts). <a href="#bibtex">BibTeX entry</a>.<br>
testing the stable features of the calculus as well as the unstable
ones.<br>
The processor source code is available in the directory <a
- href="http://helm.cs.unibo.it/websvn/listing.php?repname=helm&path=%2Ftrunk%2Fhelm%2Fsoftware%2Flambda-delta%2F&rev=0&sc=0">/trunk/helm/software/lambda-delta/</a>
+ href="http://helm.cs.unibo.it/websvn/listing.php?repname=helm&path=%2Ftrunk%2Fhelm%2Fsoftware%2Flambda_delta%2F&rev=0&sc=0">/trunk/helm/software/lambda_delta/</a>
of the <a href="http://helm.cs.unibo.it/software/index.html">HELM Svn
repository</a>. The Svn revisions containing the stable versions
of Helena are indicated below. <br>
BibTeX database of λδ documentation: <a
href="download/lambda_delta.bib"><span style="font-style: italic;">lambda_delta.bib</span></a>,
+
<a style="font-style: italic;"
href="download/lambda_delta.txt">lambda_delta.txt</a> (revised <span
style="font-weight: bold;">2010-07</span>).</li>
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="http://www.cs.unibo.it/%7Efguidi/download/globe-trans.png"
+ src="download/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="http://www.cs.unibo.it/%7Efguidi/download/PNGnow2.png"><br>
+ src="download/PNGnow2.png"><br>
<br>
-Last update 201
0-12-14 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
+Last update 201
1-09-09 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
Guidi</a><br>
</div>
</body>
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="http://www.cs.unibo.it/%7Efguidi/download/globe-trans.png"
+ src="download/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="http://www.cs.unibo.it/%7Efguidi/download/PNGnow2.png"><br>
+ src="download/PNGnow2.png"><br>
<br>
-Last update 201
0-12-14 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
+Last update 201
1-09-09 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
Guidi</a><br>
</div>
</body>
<h3 style="text-align: right;">News <img
style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly"
src="download/b5.png"></h3>
+ <ul>
+ <li><span style="font-weight: bold;">September 2011.</span> The
+denomination "lambda-delta" changes to "lambda_delta".</li>
+ <ul>
+ <li>The character "-" is reserved in λδ textual syntax
+(recognized by <span style="font-style: italic;">Helena 0.8.1</span>).<br>
+ </li>
+ <li>Eventually, the occurrences of the character "-" will be
+replaced by "_" in all λδ-related identifiers.</li>
+ <li>In particular, this refactoring involves file names and
+path names.</li>
+ <li>The permanent λδ URL is sheduled to become <span
+ style="font-style: italic;">http://lambda_delta.info</span> as soon as
+possible.<br>
+ </li>
+ </ul>
+ </ul>
+ <ul>
+ <li><span style="font-weight: bold;">April 2011.</span> The
+specification of λδ version 2 is restarted in <a
+ href="http://matita.cs.unibo.it/">Matita 0.5</a>.<br>
+ </li>
+ </ul>
<ul>
<li><span style="font-weight: bold;">December 2010.</span>
Permanent λδ URL acquired: <a href="http://lambda-delta.info">http://lambda-delta.info</a>
href="implementation.html#helena">λδ</a><span
style="font-style: italic;"></span>, <span style="font-style: italic;"></span>is
available
-as a
-part of the <a href="http://helm.cs.unibo.it/">HELM</a> software. <br>
+as
+a
+part
+of
+the <a href="http://helm.cs.unibo.it/">HELM</a> software. <br>
</li>
</ul>
<span style="font-weight: bold;"></span>
<span style="font-weight: bold;"></span></li>
</ul>
<ul>
- <li><span style="font-weight: bold;">March 2008.</span> An
-improvement of the
-specification of λδ in Coq 7.3.1 begins:
- <ul>
+ <li><span style="font-weight: bold;">March 2008.</span> The
+specification of λδ version 2 in Coq 7.3.1 begins:
+<!-- <ul>
<li>native type assignment with new rules for application: <span
style="font-style: italic;">nty</span> (it replaces <span
style="font-style: italic;">ty3</span>);<br>
<li>parallel conversion on focalized terms: <span
style="font-style: italic;">fpcs</span> (it replaces <span
style="font-style: italic;"></span><span style="font-style: italic;">pc3</span>);
-
-
-
-
-
-
-
<br>
</li>
<li>new weak parallel reduction on environments: <span
<li>new shift function: <span style="font-style: italic;">shift</span>:
(it
replaces
+
<span style="font-style: italic;">app1</span>);</li>
<li>new length function for environments: <span
style="font-style: italic;">clen</span>;<br>
</li>
<li>we removed greedy substitution (<span
style="font-style: italic;"></span><span style="font-style: italic;">csubst0</span>,
-
-
<span style="font-style: italic;">csubst1</span>, <span
style="font-style: italic;">fsubst0</span>, <span
style="font-style: italic;">subst0</span>, <span
<li>we removed level indicators on environments (<span
style="font-style: italic;">cbk</span>).</li>
</ul>
- </li>
+--> </li>
</ul>
<ul>
<li><span style="font-weight: bold;">September 2007.</span>
style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly"
src="download/b4.png"></h3>
<ul>
- <li><span style="font-weight: bold;">November 2010.</span> The <a
- href="http://www.google.com/">Google</a>
+ <li><span style="font-weight: bold;">November 2010.</span>
+The <a href="http://www.google.com/">Google</a>
search <span style="color: rgb(255, 0, 0);">formal system lambda delta</span>
gives 8 resources about λδ as the first results.<br>
</li>
</ul>
<ul>
- <li><span style="font-weight: bold;">November 2010.</span> The <a
- href="http://www.yahoo.com/">Yahoo</a>
+ <li><span style="font-weight: bold;">November 2010.</span>
+The <a href="http://www.yahoo.com/">Yahoo</a>
search <span style="color: rgb(255, 0, 0);">formal system lambda delta</span>
gives 4 resources and 2 sub-resources about λδ as the first results.</li>
</ul>
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="http://www.cs.unibo.it/%7Efguidi/download/globe-trans.png"
+ src="download/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="http://www.cs.unibo.it/%7Efguidi/download/PNGnow2.png"><br>
+ src="download/PNGnow2.png"><br>
<br>
-Last update 201
0-12-14 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
+Last update 201
1-09-09 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
Guidi</a><br>
</div>
</body>
projects / helm.git / commitdiff
