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+
<meta content="Ferruccio Guidi" name="author">
- <meta content="The formal system lambdadelta" name="description">
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+ <meta content="The formal system λδ" name="description">
+ <link rel="shortcut icon" href="images/crux_16.ico"></head><body>
<div style="text-align: center;">
<br>
- <a href="http://lambdadelta.info"><img alt="[Crux Logo]"
- title="The Crux" src="images/crux_32.png" style="border: 0px
- solid ; width: 32px; height: 32px;"></a>
- <h1>The Formal System λδ (lambdadelta)<br>
+ <a href="http://lambdadelta.info"><img alt="[Crux Logo]" title="The Crux" src="images/crux_32.png" style="border: 0px solid ; width: 32px; height: 32px;"></a>
+ <h1>The Formal System λδ (\lambda\delta)<br>
</h1>
<h2>Towards the unification of terms, types, environments and
contexts</h2>
- <img style="width: 95%; height: 4px;" alt="[Separator]"
- title="Separator" src="images/rainbow.png"><br>
- <table style="text-align: left; width: 95%; margin-left: auto;
- margin-right: auto;" border="0" cellpadding="2" cellspacing="20">
+ <img style="width: 95%; height: 4px;" alt="[Separator]" title="Separator" src="images/rainbow.png"><br>
+ <table style="text-align: left; width: 95%; margin-left: auto; margin-right: auto;" border="0" cellpadding="2" cellspacing="20">
<tbody>
<tr>
<td style="vertical-align: top;">
</ul>
</td>
<td style="vertical-align: top; text-align: left;">
- <h3 style="text-align: right;">Documentation <img
- style="width: 37px; height: 37px;" alt="[Butterfly]"
- title="Butterfly" src="images/b5.png"></h3>
+ <h3 style="text-align: right;">Documentation <img style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly" src="images/b5.png"></h3>
Currently the <span style="font-weight: bold;">main
source of
- information</span> on λδ (version 1) is <span
- style="font-weight: bold;">Resource
+ information</span> on λδ (version 1) is <span style="font-weight: bold;">Resource
1.1</span> below.<br>
A <span style="font-weight: bold;">summary</span> of
basic λδ (version
1.5</span>
below.<br>
<h3><img style="width: 32px; height: 32px;" alt="[Basic
- lambdadelta Logo]" title="Basic lambdadelta"
- src="images/basic_32.png"> Basic λδ version 2 (in
+ lambdadelta Logo]" title="Basic lambdadelta" src="images/basic_32.png"> Basic λδ version 2 (in
progress):</h3>
- <table style="text-align: left; width: 100%;" border="0"
- cellpadding="2" cellspacing="2">
+ <table style="text-align: left; width: 100%;" border="0" cellpadding="2" cellspacing="2">
<tbody>
<tr>
<td style="vertical-align: top;">2.1.<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
+ Guidi: <a href="download/cie_2010.pdf"><span style="font-style: italic;">An
Efficient
- Validation Procedure for the Formal System </span><span
- style="font-style: italic;">λδ</span></a><span
- style="font-style: italic;"></span>
+ Validation Procedure for the Formal System </span><span style="font-style: italic;">λδ</span></a><span style="font-style: italic;"></span>
(<span style="font-weight: bold;">2010-07</span>).
In <span style="font-style: italic;">CiE 2010
Local Proceedings</span>.
- <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
+ <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
- lambdadelta</span></a> (<span
- style="font-weight: bold;">2009-09)</span>.
+ 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>
+ Bologna, technical report UBLCS-2009-16. <a href="implementation.html#bibtex">BibTeX entry</a>.<br>
<br>
</td>
</tr>
<td style="vertical-align: top;">2.3.<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
+ Guidi: <a href="download/ld_talk_7s.pdf"><span style="font-style: italic;">An
Efficient
Validation Procedure for the Formal System λδ</span></a>
(<span style="font-weight: bold;">2010-07</span>).
<td style="vertical-align: top;">2.4.<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
+ Guidi: <a href="download/ld_talk_6s.pdf"><span style="font-style: italic;">A
Validator
- for the Formal System λδ</span></a> (revised <span
- style="font-weight: bold;">2010-02</span>).
+ for the Formal System λδ</span></a> (revised <span style="font-weight: bold;">2010-02</span>).
Presentation
at
the
</tbody>
</table>
<h3><img style="width: 32px; height: 32px;" alt="[Basic
- lambdadelta Logo]" title="Basic lambdadelta"
- src="images/basic_32.png"> Basic λδ version 1
+ lambdadelta Logo]" title="Basic lambdadelta" src="images/basic_32.png"> Basic λδ version 1
(dismissed):</h3>
- <table style="text-align: left; width: 100%;" border="0"
- cellpadding="2" cellspacing="2">
+ <table style="text-align: left; width: 100%;" border="0" cellpadding="2" cellspacing="2">
<tbody>
<tr>
<td style="vertical-align: top;">1.1.<br>
</td>
<td style="vertical-align: top;"><a name="ldp5"></a>F.
Guidi:
- <a
- href="http://doi.acm.org/10.1145/1614431.1614436"><span
- style="font-style: italic;">The Formal System
- λδ</span></a> (<span style="font-weight:
- bold;">2009-10</span>). In ACM ToCL 11(1),
+ <a href="http://doi.acm.org/10.1145/1614431.1614436"><span style="font-style: italic;">The Formal System
+ λδ</span></a> (<span style="font-weight: bold;">2009-10</span>). In ACM ToCL 11(1),
Article
- No. 5 (<a
- href="http://tocl.acm.org/accepted/335guidi.pdf">accepted</a>
+ No. 5 (<a href="http://tocl.acm.org/accepted/335guidi.pdf">accepted</a>
<span style="font-weight: bold;">2008-07</span>).
CoRR
- identifier <a
- href="http://arxiv.org/abs/cs/0611040"><span
- style="font-style: italic;"></span>cs/0611040</a>
+ identifier <a href="http://arxiv.org/abs/cs/0611040"><span style="font-style: italic;"></span>cs/0611040</a>
[v10] (revised <span style="font-weight: bold;">2008-09</span>).
<a href="implementation.html#bibtex">BibTeX
entry</a>.<br>
<td style="vertical-align: top;">1.2.<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
+ Guidi: <a 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>).
+ Abbreviations</span></a> (<span style="font-weight: bold;">2007-06</span>).
In <span style="font-style: italic;">CiE 2007
Local Proceedings</span>.
University
(abstract
of
a
- presentation). <a
- href="implementation.html#bibtex">BibTeX
+ presentation). <a href="implementation.html#bibtex">BibTeX
entry</a>.<br>
<br>
</td>
<td style="vertical-align: top;">1.3.<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
+ 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
the Lambda Calculus with
- Abbreviations</span></a> (<span
- style="font-weight: bold;">2006-11</span>).
+ Abbreviations</span></a> (<span style="font-weight: bold;">2006-11</span>).
University
of
Bologna,
technical
report
- UBLCS-2006-25. <a
- href="implementation.html#bibtex">BibTeX
+ UBLCS-2006-25. <a href="implementation.html#bibtex">BibTeX
entry</a>.<br>
<br>
</td>
<td style="vertical-align: top;">1.4.<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
+ 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
Types
on
the
Abbreviations:
a
Certified
- Specification</a> (<span style="font-weight:
- bold;">2006-01</span>).
+ Specification</a> (<span style="font-weight: bold;">2006-01</span>).
University of
- Bologna, technical report UBLCS-2006-01. <a
- href="implementation.html#bibtex">BibTeX entry</a>.<br>
+ Bologna, technical report UBLCS-2006-01. <a href="implementation.html#bibtex">BibTeX entry</a>.<br>
<br>
</td>
</tr>
<td style="vertical-align: top;">1.5.<br>
</td>
<td style="vertical-align: top;"><a name="ldt5"></a>F.
- Guidi: <a style="font-style: italic;"
- href="download/ld_talk_5s.pdf">The
+ Guidi: <a style="font-style: italic;" href="download/ld_talk_5s.pdf">The
Formal
System lambdadelta</a>
(<span style="font-weight: bold;">2008-10</span>).
<td style="vertical-align: top;">1.6.<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
+ Guidi: <a 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>).
+ and Contexts</span></a> (<span style="font-weight: bold;">2008-03</span>).
Presentation
at
Types
<td style="vertical-align: top;">1.7.<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
+ Guidi: <a 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>).
+ Abbreviations</span></a> (<span style="font-weight: bold;">2007-06</span>).
Presentation
at
CiE
<td style="vertical-align: top;">1.8.<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
+ Guidi: <a 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>).
+ Abbreviazioni</span></a> (<span style="font-weight: bold;">2007-01</span>).
Presentation
at
the
</td>
<td style="vertical-align: top;"><a name="ldt1"></a>F.
Guidi:
- <a href="download/ld_talk_1s.pdf"><span
- style="font-style: italic;">Lambda Tipi sul
+ <a 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
- the University of Bologna (slides <span
- style="font-weight: bold;">in
+ the University of Bologna (slides <span style="font-weight: bold;">in
Italian</span>).<br>
</td>
</tr>
</tbody>
</table>
<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 ;
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- height: 31px;" alt="[PNG Used Here]" title="PNG Used Here]"
- src="http://www.cs.unibo.it/%7Efguidi/images/PNGnow2.png"><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="http://www.cs.unibo.it/%7Efguidi/images/PNGnow2.png"><br>
<br>
- Last update 2012-12-01 by <a
- href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
+ Last update 2012-12-01 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
Guidi</a><br>
</div>
- </body>
-</html>
+
+</body></html>
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-<html>
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- <meta content="text/html; charset=UTF-8" http-equiv="content-type">
- <title>lambdadelta home page</title>
+<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">
- <meta content="The formal system lambdadelta" name="description">
- <link rel="shortcut icon" href="images/crux_16.ico">
- </head>
- <body>
+ <meta content="The formal system λδ" name="description">
+ <link rel="shortcut icon" href="images/crux_16.ico"></head><body>
<div style="text-align: center;">
<br>
- <a href="http://lambdadelta.info"><img alt="[Crux Logo]"
- title="The Crux" src="images/crux_32.png" style="border: 0px
- solid ; width: 32px; height: 32px;"></a>
- <h1>The Formal System λδ (lambdadelta)<br>
+ <a href="http://lambdadelta.info"><img alt="[Crux Logo]" title="The Crux" src="images/crux_32.png" style="border: 0px solid ; width: 32px; height: 32px;"></a>
+ <h1>The Formal System λδ (\lambda\delta)<br>
</h1>
<h2>Towards the unification of terms, types, environments and
contexts</h2>
- <img style="width: 95%; height: 4px;" alt="[Separator]"
- title="Separator" src="images/rainbow.png"><br>
- <table style="text-align: left; width: 95%; margin-left: auto;
- margin-right: auto;" border="0" cellpadding="2" cellspacing="20">
+ <img style="width: 95%; height: 4px;" alt="[Separator]" title="Separator" src="images/rainbow.png"><br>
+ <table style="text-align: left; width: 95%; margin-left: auto; margin-right: auto;" border="0" cellpadding="2" cellspacing="20">
<tbody>
<tr>
<td style="vertical-align: top;">
</td>
<td style="vertical-align: top; text-align: left;">
<h3 style="text-align: right;">Computer-checked formal
- specifications <img style="width: 37px; height: 37px;"
- alt="[Butterfly]" title="Butterfly"
- src="images/b9.png"></h3>
+ specifications <img style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly" src="images/b9.png"></h3>
<span style="font-weight: bold;">Resource
- 1</span> below provides for the statically generated <span
- style="font-weight: bold;">natural language
+ 1</span> below provides for the statically generated <span style="font-weight: bold;">natural language
representation</span> of
λδ meta-theory (faster rendering w.r.t. resource 2 below).<br>
<span style="font-weight: bold;">Resource 2</span> below
provides
- for the dynamically generated <span style="font-weight:
- bold;">natural
+ for the dynamically generated <span style="font-weight: bold;">natural
language representation</span> of
- λδ meta-theory (powered by the <a
- href="http://helm.cs.unibo.it/">HELM</a>
+ 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 style="font-weight: bold;">resource 3</span>
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/lambdadelta/">lambdadelta</a>
+ <li><a name="static"></a>F. Guidi: <a style="font-style: italic;" href="static/matita/lambdadelta/">lambdadelta</a>
(revised <span style="font-weight: bold;">2011-09</span>).
Formal
- specification for <a
- href="http://matita.cs.unibo.it/">Matita</a> 0.5
+ specification for <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>
rendering engine)<br>
Here are the most relevant theorems proved in the
formal specification:
<ul>
- <li><a
-href="static/matita/lambdadelta/Basic_1/pr3/pr3/pr3_confluence.con.html">Confluence
+ <li><a href="static/matita/lambdadelta/Basic_1/pr3/pr3/pr3_confluence.con.html">Confluence
of
reduction</a> (Church-Rosser property).</li>
- <li><a
- href="static/matita/lambdadelta/Basic_1/ty3/props/ty3_correct.con.html">Correctness
+ <li><a href="static/matita/lambdadelta/Basic_1/ty3/props/ty3_correct.con.html">Correctness
of
types</a>.</li>
- <li><a
- href="static/matita/lambdadelta/Basic_1/ty3/props/ty3_unique.con.html">Uniqueness
+ <li><a href="static/matita/lambdadelta/Basic_1/ty3/props/ty3_unique.con.html">Uniqueness
of
types
up
to
conversion</a>.<br>
</li>
- <li><a
- href="static/matita/lambdadelta/Basic_1/ty3/pr3/ty3_sred_pr3.con.html">Subject
+ <li><a href="static/matita/lambdadelta/Basic_1/ty3/pr3/ty3_sred_pr3.con.html">Subject
reduction
of
the
type
assignment</a>.</li>
- <li><a
-href="static/matita/lambdadelta/Basic_1/ty3/arity_props/ty3_sn3.con.html">Strong
+ <li><a href="static/matita/lambdadelta/Basic_1/ty3/arity_props/ty3_sn3.con.html">Strong
normalization
of
the
typed
terms</a>.</li>
- <li><a
- href="static/matita/lambdadelta/Basic_1/ty3/dec/ty3_inference.con.html">Decidability
+ <li><a href="static/matita/lambdadelta/Basic_1/ty3/dec/ty3_inference.con.html">Decidability
of
the
type
</li>
</ul>
</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/lambdadelta/">lambdadelta</a>
+ <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/lambdadelta/">lambdadelta</a>
(revised <span style="font-weight: bold;">2011-09</span>).
Formal
- specification for <a
- href="http://matita.cs.unibo.it/">Matita</a> 0.5 (<a
- href="http://helm.cs.unibo.it/">HELM</a> directory).<br>
+ specification for <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="ldp1"></a>F. Guidi: <a
- href="download/lambdadelta_1.tar.gz"><span
- style="font-style: italic;">lambdadelta_1</span></a>
+ <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>).
Formal
specification for <span style="font-weight: bold;">Coq
proof scripts). <a href="#bibtex">BibTeX entry</a>.<br>
</li>
</ol>
- <h3 style="text-align: right;">Tools <img style="width:
- 37px; height: 37px;" alt="[Butterfly]"
- title="Butterfly" src="images/b5.png"></h3>
- <a name="lddl"></a><img style="width: 32px; height: 32px;"
- alt="[Crux Logo]" title="The Crux"
- src="images/crux_32.png"><span style="font-weight:
- bold;"> </span>The <span style="font-weight: bold;"><span
- style="text-decoration: underline;">λδ
+ <h3 style="text-align: right;">Tools <img style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly" src="images/b5.png"></h3>
+ <a name="lddl"></a><img style="width: 32px; height: 32px;" alt="[Crux Logo]" title="The Crux" src="images/crux_32.png"><span style="font-weight: bold;"> </span>The <span style="font-weight: bold;"><span style="text-decoration: underline;">λδ
Digital
Library
- (LDDL)</span></span> is part of <a
- href="http://helm.cs.unibo.it/">HELM</a>
+ (LDDL)</span></span> is part of <a href="http://helm.cs.unibo.it/">HELM</a>
and contains a set of
resources expressed in λδ.<br>
<ul>
<li><span style="font-weight: bold;">Contents:</span>
Landau's "<span style="font-style: italic;">Grundlagen
der Analysis</span>" (from
- Jutting's specification in <a
- href="http://www.win.tue.nl/automath/">Automath</a>).<br>
+ Jutting's specification in <a href="http://www.win.tue.nl/automath/">Automath</a>).<br>
<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>
+ <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>
</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><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
definition
- "t234"</a> (in "basic_rg" λδ), <a
-href="static/lddl/crg_si/grundlagen/l/e/st/eq/landau/n/rt/rp/r/c/8283/t234.ld.html">Grundlagen's
+ "t234"</a> (in "basic_rg" λδ), <a href="static/lddl/crg_si/grundlagen/l/e/st/eq/landau/n/rt/rp/r/c/8283/t234.ld.html">Grundlagen's
definition
"t234"</a> (in "complete_rg" λδ).<br>
</li>
</ul>
<br>
- <a name="helena"></a><span style="font-weight: bold;"><img
- style="width: 32px; height: 32px;" alt="[Helena Logo]"
- title="Helena" src="images/helena_32.png"> <span
- style="text-decoration: underline;">Helena</span></span>
+ <a name="helena"></a><span style="font-weight: bold;"><img style="width: 32px; height: 32px;" alt="[Helena Logo]" title="Helena" src="images/helena_32.png"> <span style="text-decoration: underline;">Helena</span></span>
is a λδ
processor,
implemented in <a href="http://caml.inria.fr/">Caml</a>
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%2Fhelena%2F&rev=0&sc=0">/trunk/helm/software/helena/</a>
- of the <a
- href="http://helm.cs.unibo.it/software/index.html">HELM
+ 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%2Fhelena%2F&rev=0&sc=0">/trunk/helm/software/helena/</a>
+ of the <a href="http://helm.cs.unibo.it/software/index.html">HELM
Svn
repository</a>. The Svn revisions containing the stable
versions
intermediate language.
Features importation from ".hln" files containing λδ
textual syntax.
- The overall validation speed of the "<span
- style="font-style: italic;">Grundlagen
+ The overall validation speed of the "<span style="font-style: italic;">Grundlagen
der
Analysis</span>" increases of 22% with respect to
version 0.8.0. [Svn
- revision: 11032] (<a
- href="download/helena_0.8.1.tar.gz">archived
+ revision: 11032] (<a href="download/helena_0.8.1.tar.gz">archived
source code</a>)
<ul>
<li><span style="font-weight: bold;">2009-12.</span>
Helena
- appears in F. Wiedijk's <a
- href="http://www.cs.ru.nl/%7Efreek/digimath/index.html#helena">index
+ appears in F. Wiedijk's <a href="http://www.cs.ru.nl/%7Efreek/digimath/index.html#helena">index
of
computer
math systems</a>.</li>
</li>
</ul>
<ul>
- <li><a style=" font-weight: bold;"
- href="documentation.html#ldp6">Version 0.8.0</a><span
- style="font-weight: bold;"> (2009-09).</span>
+ <li><a style="font-weight: bold;" href="documentation.html#ldp6">Version 0.8.0</a><span style="font-weight: bold;"> (2009-09).</span>
Supports
"basic_rg" λδ with naive implementation of
impredicative sort
inclusion. Features
- importation from <a
- href="http://www.win.tue.nl/automath/">Automath</a>
+ importation from <a href="http://www.win.tue.nl/automath/">Automath</a>
and exportation to <a href="http://www.w3.org/XML/">XML</a>.
[Svn
- revision: 10304] (<a
- href="download/helena_0.8.0.tar.gz">archived
+ revision: 10304] (<a href="download/helena_0.8.0.tar.gz">archived
source code</a>)<br>
<ul>
<li><span style="font-weight: bold;">2009-09.</span>
- Jutting's specification of Landau's "<span
- style="font-style: italic;">Grundlagen
+ Jutting's specification of Landau's "<span style="font-style: italic;">Grundlagen
der
Analysis</span>" enters λδ Digital Library.<br>
<span style="font-weight: bold;"></span></li>
<li><span style="font-weight: bold;">2009-06.</span>
- Jutting's specification of Landau's "<span
- style="font-style: italic;">Grundlagen
+ Jutting's specification of Landau's "<span style="font-style: italic;">Grundlagen
der
Analysis</span>" is
- successfully processed, enabling sort inclusion<span
- style="font-weight: bold;"></span>.</li>
+ successfully processed, enabling sort inclusion<span style="font-weight: bold;"></span>.</li>
</ul>
</li>
</ul>
- <h3 style="text-align: right;">Other resources <img
- style="width: 37px; height: 37px;" alt="[Butterfly]"
- title="Butterfly" src="images/b4.png"></h3>
+ <h3 style="text-align: right;">Other resources <img style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly" src="images/b4.png"></h3>
<ul>
<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>
+ 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>
</ul>
<ul>
<li>A <a href="http://www.jedsoft.org/jed/">Jed mode</a>
for
- editing ".hln" files (containing λδ textual syntax): <a
- style="font-style: italic;"
- href="download/helena.sl">helena.sl</a>
+ editing ".hln" files (containing λδ textual syntax): <a style="font-style: italic;" href="download/helena.sl">helena.sl</a>
(revised <span style="font-weight: bold;">2010-11</span>).</li>
</ul>
<ul>
<li>A <a href="http://www.jedsoft.org/jed/">Jed mode</a>
for
- editing ".aut" files (containing <a
- href="http://www.win.tue.nl/automath/">Automath</a>
- textual syntax): <a style="font-style: italic;"
- href="download/automath.sl">automath.sl</a>
+ editing ".aut" files (containing <a href="http://www.win.tue.nl/automath/">Automath</a>
+ textual syntax): <a style="font-style: italic;" href="download/automath.sl">automath.sl</a>
(revised <span style="font-weight: bold;">2008-07</span>).</li>
</ul>
<ul>
- <li>A logo for λδ: <a href="images/crux_177.png"><span
- style="font-style: italic;">crux_177.png</span></a>
+ <li>A logo for λδ: <a href="images/crux_177.png"><span style="font-style: italic;">crux_177.png</span></a>
(revised <span style="font-weight: bold;">2012-09</span>).<br>
</li>
</ul>
</tbody>
</table>
<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>
+ <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 2012-12-01 by <a href="http://www.cs.unibo.it/%7Efguidi/">Ferruccio
Guidi</a><br>
</div>
- </body>
-</html>
+
+</body></html>
\ No newline at end of file
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<html>
-<head>
- <meta content="text/html; charset=UTF-8" http-equiv="content-type">
- <title>lambdadelta home page</title>
+<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">
- <meta content="The formal system lambdadelta" name="description">
- <link rel="shortcut icon" href="images/crux_16.ico">
-</head>
-<body>
+ <meta content="The formal system λδ" name="description">
+ <link rel="shortcut icon" href="images/crux_16.ico"></head><body>
<div style="text-align: center;">
<br>
-<a href="http://lambdadelta.info"><img alt="[Crux Logo]"
- title="The Crux" src="images/crux_32.png"
- style="border: 0px solid ; width: 32px; height: 32px;"></a>
-<h1>The Formal System λδ (lambdadelta)<br>
+<a href="http://lambdadelta.info"><img alt="[Crux Logo]" title="The Crux" src="images/crux_32.png" style="border: 0px solid ; width: 32px; height: 32px;"></a>
+<h1>The Formal System λδ (\lambda\delta)<br>
</h1>
<h2>Towards the unification of terms, types, environments and contexts</h2>
-<img style="width: 95%; height: 4px;" alt="[Separator]"
- title="Separator" src="images/rainbow.png"><br>
-<table
- style="text-align: left; width: 95%; margin-left: auto; margin-right: auto;"
- border="0" cellpadding="2" cellspacing="20">
+<img style="width: 95%; height: 4px;" alt="[Separator]" title="Separator" src="images/rainbow.png"><br>
+<table style="text-align: left; width: 95%; margin-left: auto; margin-right: auto;" border="0" cellpadding="2" cellspacing="20">
<tbody>
<tr>
<td style="vertical-align: top;">
</ul>
</td>
<td style="vertical-align: top; text-align: left;">
- <h3 style="text-align: right;">Foreword <img
- style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly"
- src="images/b9.png"></h3>
+ <h3 style="text-align: right;">Foreword <img style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly" src="images/b9.png"></h3>
The formal system λδ
-(lambdadelta) is a typed lambda calculus that pursues the static and
+(\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
desired properties.<br>
λδ comes in several versions listed in the following table, which
includes the major milestones:<br>
<br>
- <table style="text-align: left; width: 100%;" border="1"
- cellpadding="2" cellspacing="0">
+ <table style="text-align: left; width: 100%;" border="1" cellpadding="2" cellspacing="0">
<tbody>
<tr>
- <td
- style="vertical-align: top; background-color: rgb(223, 223, 223); text-align: center;">Version<br>
+ <td style="vertical-align: top; background-color: rgb(223, 223, 223); text-align: center;">Version<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(223, 223, 223); text-align: center;">Name<br>
+ <td style="vertical-align: top; background-color: rgb(223, 223, 223); text-align: center;">Name<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(223, 223, 223); text-align: center;">Started<br>
+ <td style="vertical-align: top; background-color: rgb(223, 223, 223); text-align: center;">Started<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(223, 223, 223); text-align: center;">Released<br>
+ <td style="vertical-align: top; background-color: rgb(223, 223, 223); text-align: center;">Released<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(223, 223, 223); text-align: center;">Dismissed<br>
+ <td style="vertical-align: top; background-color: rgb(223, 223, 223); text-align: center;">Dismissed<br>
</td>
</tr>
<tr>
- <td
- style="vertical-align: top; background-color: rgb(255, 223, 191);">2<br>
+ <td style="vertical-align: top; background-color: rgb(255, 223, 191);">2<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(255, 223, 191);">basic_2<br>
+ <td style="vertical-align: top; background-color: rgb(255, 223, 191);">basic_2<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(255, 223, 191);">April
+ <td style="vertical-align: top; background-color: rgb(255, 223, 191);">April
2011<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(255, 223, 191);">planned
+ <td style="vertical-align: top; background-color: rgb(255, 223, 191);">planned
in
2013<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(255, 223, 191);">not
+ <td style="vertical-align: top; background-color: rgb(255, 223, 191);">not
planned yet<br>
</td>
</tr>
<tr>
- <td
- style="vertical-align: top; background-color: rgb(255, 191, 191);">1<br>
+ <td style="vertical-align: top; background-color: rgb(255, 191, 191);">1<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(255, 191, 191);">basic_1<br>
+ <td style="vertical-align: top; background-color: rgb(255, 191, 191);">basic_1<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(255, 191, 191);">May
+ <td style="vertical-align: top; background-color: rgb(255, 191, 191);">May
2004<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(255, 191, 191);">November
+ <td style="vertical-align: top; background-color: rgb(255, 191, 191);">November
2006<br>
</td>
- <td
- style="vertical-align: top; background-color: rgb(255, 191, 191);">May
+ <td style="vertical-align: top; background-color: rgb(255, 191, 191);">May
2008<br>
</td>
</tr>
the
Internet
Explorer
-user <img style="width: 37px; height: 37px;" alt="[Butterfly]"
- title="Butterfly" src="images/b3.png"></h3>
+user <img style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly" src="images/b3.png"></h3>
To view this site
correctly, please select a font with <a href="http://www.unicode.org/">Unicode</a>
support.
</tbody>
</table>
<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>
+<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
Guidi</a><br>
</div>
-</body>
-</html>
+
+</body></html>
\ No newline at end of file
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<html>
-<head>
- <meta content="text/html; charset=UTF-8" http-equiv="content-type">
- <title>lambdadelta home page</title>
+<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">
- <meta content="The formal system lambdadelta" name="description">
- <link rel="shortcut icon" href="images/crux_16.ico">
-</head>
-<body>
+ <meta content="The formal system λδ" name="description">
+ <link rel="shortcut icon" href="images/crux_16.ico"></head><body>
<div style="text-align: center;"> <br>
-<a href="http://lambdadelta.info"><img alt="[Crux Logo]"
- title="The Crux" src="images/crux_32.png"
- style="border: 0px solid ; width: 32px; height: 32px;"></a>
-<h1>The Formal System λδ (lambdadelta)<br>
+<a href="http://lambdadelta.info"><img alt="[Crux Logo]" title="The Crux" src="images/crux_32.png" style="border: 0px solid ; width: 32px; height: 32px;"></a>
+<h1>The Formal System λδ (\lambda\delta)<br>
</h1>
<h2>Towards the unification of terms, types, environments and contexts</h2>
-<img style="width: 95%; height: 4px;" alt="[Separator]"
- title="Separator" src="images/rainbow.png"><br>
-<table
- style="text-align: left; width: 95%; margin-left: auto; margin-right: auto;"
- border="0" cellpadding="2" cellspacing="20">
+<img style="width: 95%; height: 4px;" alt="[Separator]" title="Separator" src="images/rainbow.png"><br>
+<table style="text-align: left; width: 95%; margin-left: auto; margin-right: auto;" border="0" cellpadding="2" cellspacing="20">
<tbody>
<tr>
<td style="vertical-align: top;">
</ul>
</td>
<td style="vertical-align: top; text-align: left;">
- <h3 style="text-align: right;">News <img
- style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly"
- src="images/b5.png"></h3>
+ <h3 style="text-align: right;">News <img style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly" src="images/b5.png"></h3>
+ <ul>
+
+ <li><span style="font-weight: bold;">December 2012.</span> The character "_" is removed from the denomination "lambda_delta". <br>
+ </li>
+ <ul>
+ <li>The denomination "\lambda\delta" is used in λδ-related texts.</li>
+ <li>The denomination "lambdadelta" is used in λδ-related identifiers.</li>
+ <li>Permanent λδ URL acquired: <a href="http://lambdadelta.info/">http://lambdadelta.info/</a>
+(pointing at this site). </li>
+ </ul>
+</ul>
<ul>
<li><span style="font-weight: bold;">September 2011.</span> The
-denomination "lambdadelta" changes to "lambdadelta".
+denomination "lambda-delta" changes to "lambda_delta".
<ul>
<li>The character "-" is reserved in λδ textual syntax
(recognized by <span style="font-style: italic;">Helena 0.8.1</span>).
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://lambdadelta.info</span> on
-December 2012.<br>
- </li>
+
</ul>
</li>
+
+
</ul>
+
<ul>
<li><span style="font-weight: bold;">April 2011.</span> The
-specification of λδ version 2 and related topics is restarted in <a
- href="http://matita.cs.unibo.it/">Matita 0.5</a>.
+specification of λδ version 2 and related topics is restarted in <a href="http://matita.cs.unibo.it/">Matita 0.5</a>.
<ul>
<li><a href="apps_2.html">Here</a> is a page about the
topics related to the specification (Applications).</li>
</li>
</ul>
<ul>
- <li><span style="font-weight: bold;">December 2010.</span>
-Permanent λδ URL acquired: <a href="http://lambdadelta.info">http://lambdadelta.info</a>
-(pointing at this site). <br>
+ <li><span style="font-weight: bold;">December 2010.</span> Transient λδ URL acquired: http://lambda-delta.info/
+(expires on December 2012). <br>
<span style="font-weight: bold;"></span></li>
</ul>
<ul>
- <li><span style="font-weight: bold;">November 2010.</span> <span
- style="font-style: italic;">Helena 0.8.1</span> is released. <br>
+ <li><span style="font-weight: bold;">November 2010.</span> <span style="font-style: italic;">Helena 0.8.1</span> is released. <br>
</li>
</ul>
<ul>
- <li><span style="font-weight: bold;">September 2009.</span> <span
- style="font-style: italic;">Helena 0.8.0</span> is released and the <a
- href="implementation.html#lddl">λδ Digital Library</a> is started.<br>
+ <li><span style="font-weight: bold;">September 2009.</span> <span style="font-style: italic;">Helena 0.8.0</span> is released and the <a href="implementation.html#lddl">λδ Digital Library</a> is started.<br>
<span style="font-weight: bold;"></span></li>
</ul>
<ul>
- <li><span style="font-weight: bold;">June 2009.</span> <span
- style="font-style: italic;">Helena</span>, a <a
- href="implementation.html#helena">validator for λδ version 2</a>, is
+ <li><span style="font-weight: bold;">June 2009.</span> <span style="font-style: italic;">Helena</span>, a <a href="implementation.html#helena">validator for λδ version 2</a>, is
available as a part of the <a href="http://helm.cs.unibo.it/">HELM</a>
software. <br>
</li>
</ul>
<span style="font-weight: bold;"></span>
<ul>
- <li><span style="font-weight: bold;">July 2008.</span> <a
- href="documentation.html#ldp5">First journal paper on λδ</a> accepted
+ <li><span style="font-weight: bold;">July 2008.</span> <a href="documentation.html#ldp5">First journal paper on λδ</a> accepted
for publication.</li>
</ul>
<ul>
- <li><span style="font-weight: bold;">July 2008.</span> First <a
- href="http://helm.cs.unibo.it/procedural/">procedural reconstruction</a>
-for <a href="http://matita.cs.unibo.it/">Matita 0.5</a> of the <a
- href="implementation.html#ldp1">λδ proof scripts for Coq 7.3.1</a>.<br>
+ <li><span style="font-weight: bold;">July 2008.</span> First <a href="http://helm.cs.unibo.it/procedural/">procedural reconstruction</a>
+for <a href="http://matita.cs.unibo.it/">Matita 0.5</a> of the <a href="implementation.html#ldp1">λδ proof scripts for Coq 7.3.1</a>.<br>
</li>
</ul>
<ul>
- <li><span style="font-weight: bold;">June 2008.</span> The <a
- href="implementation.html#static">HTML pages of the specification of
+ <li><span style="font-weight: bold;">June 2008.</span> The <a href="implementation.html#static">HTML pages of the specification of
λδ version 1 for Matita 0.5</a> are online.<br>
<span style="font-weight: bold;"></span></li>
</ul>
version 1 for Matita 0.4</a> is online.</li>
</ul>
<ul>
- <li><span style="font-weight: bold;">November 2006.</span> <a
- href="documentation.html#ldp3">λδ version 1</a> is released.</li>
+ <li><span style="font-weight: bold;">November 2006.</span> <a href="documentation.html#ldp3">λδ version 1</a> is released.</li>
</ul>
<ul>
- <li><span style="font-weight: bold;">December 2005.</span> <a
- href="documentation.html#ldt1">First communication on λδ</a>.<br>
+ <li><span style="font-weight: bold;">December 2005.</span> <a href="documentation.html#ldt1">First communication on λδ</a>.<br>
</li>
</ul>
<ul>
- <li><span style="font-weight: bold;">May 2004.</span> The <a
- href="implementation.html#ldp1">specification of λδ version 1</a> is
+ <li><span style="font-weight: bold;">May 2004.</span> The <a href="implementation.html#ldp1">specification of λδ version 1</a> is
started with Coq 7.3.1.<br>
</li>
</ul>
- <h3 style="text-align: right;">Visibility <img
- style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly"
- src="images/b4.png"></h3>
+ <h3 style="text-align: right;">Visibility <img style="width: 37px; height: 37px;" alt="[Butterfly]" title="Butterfly" src="images/b4.png"></h3>
<ul>
- <li><span style="font-weight: bold;">February 2012.</span> The <a
- href="http://www.google.com/">Google</a> search for <span
- style="color: rgb(255, 0, 0);">formal system lambda delta</span> gives
+ <li><span style="font-weight: bold;">February 2012.</span> The <a href="http://www.google.com/">Google</a> search for <span style="color: rgb(255, 0, 0);">formal system lambda delta</span> gives
5 resources about λδ in the first 6 results.<br>
</li>
</ul>
<ul>
- <li><span style="font-weight: bold;">February 2012.</span> The <a
- href="http://www.yahoo.com/">Yahoo</a> search <span
- style="color: rgb(255, 0, 0);">formal system lambda delta</span> gives
+ <li><span style="font-weight: bold;">February 2012.</span> The <a href="http://www.yahoo.com/">Yahoo</a> search <span style="color: rgb(255, 0, 0);">formal system lambda delta</span> gives
this site as the first result.</li>
</ul>
</td>
</tbody>
</table>
<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>
+<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
Guidi</a><br>
</div>
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-</html>
+
+</body></html>
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projects / helm.git / commitdiff