1 <?xml version="1.0" encoding="UTF-8"?>
3 <page xmlns="http://lambdadelta.info/"
4 description = "\lambda\delta home page"
5 title = "\lambda\delta home page"
7 head = "The Formal Systems of the λδ (\lambda\delta) Family"
9 <sitemap name="sitemap"/>
11 <section5 name="tools">Tools</section5>
13 <subsection name="osn"><img logo="osn"/>Open Symbolic Notation</subsection>
16 Open Symbolic Notation, abbreviated OSN,
17 is an easy and flexible data-interchange text format
18 intended for the lightweight representation of
19 generic abstract syntax trees in the domain of formal languages.
20 Additional information is available at <rlink to="osn/">OSN web site</rlink>.
24 <subsection name="helena"><img logo="helena"/>Helena</subsection>
27 Helena is a processor for the systems of the λδ family,
28 implemented in <link to="http://caml.inria.fr/">Caml</link>
29 as a part of the <link to="http://helm.cs.unibo.it/">HELM</link> software,
30 meant for testing both their stable and unstable features.
33 The processor source code is available in the directory
34 <link to="http://helm.cs.unibo.it/websvn/listing.php?repname=helm&path=%2Ftrunk%2Fhelm%2Fsoftware%2Fhelena%2F&rev=0&sc=0">/trunk/helm/software/helena/</link>
35 of the <link to="http://helm.cs.unibo.it/software/index.html">HELM Svn repository</link>.
36 The Svn revisions containing the stable versions of Helena are indicated next.
40 <notice class="gamma" notice="Version 0.8.3 (2015-12)."/>
41 Supports exportation to λProlog
42 (two formats for ELPI,
43 and two formats for <link to="http://teyjus.cs.umn.edu/">Teyjus</link>).
44 Employs optimized conditional compilation through
45 <link to="http://camlp5.gforge.inria.fr/">camlp5</link> code preprocessor (pa_macro)
46 to reduce a performance loss, which is expected to disappear
47 by employing a different code preprocessor.
48 Overall validation speed of the "Grundlagen der Analysis" with respect to version 0.8.2:
49 +3% with optimized compilation, +5% without optimized compilation.
50 [Svn revision: 13108] (<rlink to="download/helena_0.8.3.tar.gz">archived source code</rlink>).
52 <notice class="gamma" notice="2015-06."/>
53 The corrected specification of Landau's "Grundlagen der Analysis"
54 is successfully validated in a λProlog implementation of λδ version 3.
59 <notice class="gamma" notice="Version 0.8.2 (2015-02)."/>
60 Uses λδ version 3 with layer variables as core language.
61 Supports exportation to Gallina
62 (the specification language of <link to="http://coq.inria.fr/">Coq</link>),
64 (the specification language of <link to="http://matita.cs.unibo.it/">Matita</link>).
65 The overall validation speed of the "Grundlagen der Analysis"
66 increases of 34% with respect to version 0.8.1.
67 <rlink to="documentation.html#ldJ3a">Documentation (J3a)</rlink>.
68 [Svn revision: 13035] (<rlink to="download/helena_0.8.2.tar.gz">archived source code</rlink>).
70 The specification of Landau's "Grundlagen der Analysis"
71 for <link to="http://coq.inria.fr/">Coq 8</link>:
72 <rlink to="download/grundlagen_2.v">grundlagen_2.v</rlink>
73 (revised <notice class="gamma" notice="2015-02"/>).
75 The specification of Landau's "Grundlagen der Analysis"
76 for <link to="http://matita.cs.unibo.it/">Matita 0.99.2</link>:
77 <rlink to="download/grundlagen_2.tar.bz2">grundlagen_2.tar.bz2</rlink>
78 (revised <notice class="gamma" notice="2015-02"/>).
80 The corrected specification of Landau's "Grundlagen der Analysis":
81 <rlink to="download/grundlagen_2.aut">grundlagen_2.aut</rlink>
82 (revised <notice class="gamma" notice="2014-12"/>).
84 <notice class="gamma" notice="2015-02."/>
85 The translated specification of Landau's "Grundlagen der Analysis"
86 is successfully validated in CC by <link to="http://coq.inria.fr/">Coq 8.4.3</link>.
88 <notice class="gamma" notice="2014-12."/>
89 The corrected specification of Landau's "Grundlagen der Analysis"
90 is successfully validated in λδ version 3.
95 <notice class="beta" notice="Version 0.8.1 (2010-11)."/>
96 Uses a subset of λδ version 4 as intermediate language.
97 Features importation from ".hln" files containing λδ textual syntax.
98 The overall validation speed of the "Grundlagen der Analysis"
99 increases of 22% with respect to version 0.8.0.
100 [Svn revision: 11032] (<rlink to="download/helena_0.8.1.tar.gz">archived source code</rlink>).
102 A <link to="http://www.jedsoft.org/jed/">Jed mode</link>
103 for editing ".hln" files (containing λδ textual syntax):
104 <rlink to="download/helena.sl">helena.sl</rlink>
105 (revised <notice class="alpha" notice="2010-11"/>).
107 <notice class="beta" notice="2009-12."/>
108 Helena appears in F. Wiedijk's
109 <link to="http://www.cs.ru.nl/%7Efreek/digimath/index.html#helena">
110 index of computer math systems</link>.
115 <notice class="beta" notice="Version 0.8.0 (2009-09)."/>
116 Supports λδ version 2 with naive implementation of impredicative sort inclusion.
117 Features importation from <link to="http://www.win.tue.nl/automath/">Automath</link>
118 and exportation to <link to="http://www.w3.org/XML/">XML</link>.
119 <rlink to="documentation.html#ldR2a">Documentation (R2a)</rlink>.
120 [Svn revision: 10304] (<rlink to="download/helena_0.8.0.tar.gz">archived source code</rlink>).
122 A <link to="http://www.jedsoft.org/jed/">Jed mode</link>
123 for editing ".aut" files
124 (containing <link to="http://www.win.tue.nl/automath/">Automath</link> textual syntax):
125 <rlink to="download/automath.sl">automath.sl</rlink>
126 (revised <notice class="gamma" notice="2008-07"/>).
128 <notice class="beta" notice="2009-09."/>
129 Jutting's specification of Landau's "Grundlagen der Analysis"
130 enters λδ Digital Library.
132 <notice class="beta" notice="2009-06."/>
133 Jutting's specification of Landau's "Grundlagen der Analysis"
134 is successfully processed, enabling sort inclusion.
138 <subsection name="lddl"><img logo="lddl"/>λδ Digital Library (LDDL)</subsection>
141 The λδ Digital Library is part of <link to="http://helm.cs.unibo.it/">HELM</link>
142 and contains resources expressed in the systems of the λδ family.
144 <topitem name="contents">
145 <notice class="alpha" notice="Contents:"/>
146 Landau's "Grundlagen der Analysis"
147 (from Jutting's specification in <link to="http://www.win.tue.nl/automath/">Automath</link>).
149 <topitem name="access">
150 <notice class="alpha" notice="Access:"/>
151 <rlink to="static/lddl/">static pages</rlink> (updated <notice class="gamma" notice="2015-01"/>),
152 <rlink to="download/lddl.tar.bz2">data set</rlink> (updated <notice class="gamma" notice="2014-12"/>),
153 <rlink to="xml/">HELM server URL</rlink> (updated <notice class="gamma" notice="2014-12"/>).
155 <topitem name="examples">
156 <notice class="alpha" notice="Examples:"/>
157 <rlink to="static/lddl/Environment/grundlagen_2/l/e/st/eq/landau/n/rt/rp/r/c/8283/t234.ld.html">
158 Grundlagen's definition "t234"</rlink>