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λδ-2B is released
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1 <?xml version="1.0" encoding="UTF-8"?>
2
3 <page xmlns="http://lambdadelta.info/"
4       description = "\lambda\delta home page"
5       title = "\lambda\delta home page"
6       logo = "crux"
7       head = "The Formal Systems of the λδ (\lambda\delta) Family"
8 >
9    <sitemap name="sitemap"/>
10
11 <!-- ===================================================================== -->
12
13    <section3 name="milestones">Milestones</section3>
14
15    <news class="gamma" date="November 2019.">
16       The specification of
17       <rlink to="html/documentation.html#ldV2b">λδ-2B</rlink>
18       is released.
19    </news>
20
21    <news class="alpha" date="December 2015.">
22       <rlink to="html/documentation.html#ldJ3a">Second journal paper on λδ</rlink>
23       accepted for publication.
24    </news>
25
26    <news class="gamma" date="December 2015.">
27       <rlink to="html/implementation.html#v3">"Helena 0.8.3"</rlink> is released.
28    </news>
29
30    <news class="delta" date="August 2015.">
31       The specification of λδ-2A is concluded.
32    </news>
33
34    <news class="gamma" date="June 2015.">
35       The corrected specification of Landau's "Grundlagen der Analysis"
36       is validated in a λProlog implementation of λδ-3.
37    </news>
38
39    <news class="delta" date="March 2015.">
40       The specification of λδ-1A is validated by
41       <link to="http://matita.cs.unibo.it/">Matita 0.99.2</link>.
42    </news>
43
44    <news class="gamma" date="February 2015.">
45       <rlink to="html/implementation.html#v2">"Helena 0.8.2"</rlink> is updated.
46       <list><item>
47          The translated specification of Landau's "Grundlagen der Analysis"
48          is validated in CC by <link to="http://coq.inria.fr/">Coq 8.4.3</link>. 
49       </item></list>
50    </news>
51
52    <news class="delta" date="January 2015.">
53       The specification of <rlink to="html/specification.html#v1">λδ-1A</rlink>
54       is updated with backports from the abandoned specification of λδ-2.
55    </news>
56
57    <news class="gamma" date="December 2014.">
58       <rlink to="html/implementation.html#v2">"Helena 0.8.2"</rlink> is released.
59       <list><item>
60          The corrected specification of Landau's "Grundlagen der Analysis"
61          is validated in λδ-3. 
62       </item></list>
63    </news>
64
65    <news class="gamma" date="October 2014.">
66       The specification of
67       <rlink to="html/documentation.html#ldR2c">λδ-2A</rlink>
68       is released.
69    </news>
70
71    <news class="beta" date="July 2014.">
72       A new version of this site is online.
73    </news>
74
75    <news class="beta" date="June 2014.">
76       <rlink to="html/documentation.html#ldP2c">First communication on λδ-2.</rlink>
77    </news>
78
79    <news class="alpha" date="December 2012.">
80       The character "_" is removed from the denomination "lambda_delta":
81       <list><item>
82          The denomination "\lambda\delta" is used in λδ-related texts.
83       </item><item>
84          The denomination "lambdadelta" is used in λδ-related identifiers.
85       </item><item>
86          Permanent λδ URL acquired:
87          <rlink to="">http://lambdadelta.info/</rlink>
88          (pointing at this site).
89       </item></list>
90    </news>
91
92    <news class="alpha" date="September 2011.">
93       The denomination "lambda-delta" changes to "lambda_delta":
94       <list><item>
95          The character "-" is reserved in λδ textual syntax
96          (recognized by "Helena 0.8.1").            
97       </item><item>
98          Eventually, the occurrences of the character "-"
99          will be replaced by "_" in all λδ-related identifiers.
100       </item><item>
101          In particular, this refactoring involves file names and path names.
102       </item></list>
103    </news>
104
105    <news class="alpha" date="April 2011.">
106       The specification of
107       <rlink to="html/specification.html#v2">λδ-2</rlink>
108       and related topics is restarted in
109       <link to="http://matita.cs.unibo.it/">Matita 0.5</link>.
110    </news>
111
112    <news class="delta" date="February 2011.">
113       The specification of λδ-2 with Coq 7.3.1 is abandoned.
114    </news>
115
116    <news class="alpha" date="December 2010.">
117       Transient λδ URL acquired: http://lambda-delta.info/ (expires on December 2012). 
118    </news>
119
120    <news class="beta" date="November 2010.">
121       <rlink to="html/implementation.html#v1">"Helena 0.8.1"</rlink> is released.
122    </news>
123
124    <news class="beta" date="September 2009.">
125       <rlink to="html/implementation.html#v0">"Helena 0.8.0"</rlink> is released and the
126       <rlink to="html/implementation.html#lddl">λδ Digital Library</rlink> is started.
127    </news>
128
129    <news class="alpha" date="June 2009.">
130       "Helena", a <rlink to="html/implementation.html#helena">validator for λδ-2</rlink>,
131       is available as a part of the <link to="http://helm.cs.unibo.it/">HELM</link> software. 
132    </news>
133
134    <news class="alpha" date="September 2008.">
135       This site is online.
136    </news>
137
138    <news class="delta" date="July 2008.">
139       <rlink to="html/documentation.html#ldJ1a">First journal paper on λδ</rlink>
140       accepted for publication.
141    </news>
142
143    <news class="delta" date="July 2008.">
144       First <link to="http://helm.cs.unibo.it/procedural/">procedural reconstruction</link>
145       for <link to="http://matita.cs.unibo.it/">Matita 0.5</link>
146       of the λδ-1A for Coq 7.3.1.
147    </news>
148
149    <news class="delta" date="June 2008.">
150       The <rlink to="html/specification.html#static1">
151          HTML pages of the specification of λδ-1A for Matita 0.5</rlink>
152       are online.
153    </news>
154
155    <news class="delta" date="May 2008.">
156       The specification of λδ-1A is concluded.
157    </news>
158
159    <news class="alpha" date="March 2008.">
160       The specification of λδ-2 is started with Coq 7.3.1 (false start).
161    </news>
162
163    <news class="gamma" date="September 2007.">
164       The <rlink to="html/specification.html#dynamic1">
165          specification of λδ-1A for Matita 0.4</rlink>
166       is online.
167    </news>
168
169    <news class="gamma" date="November 2006.">
170       The specification of
171       <rlink to="html/documentation.html#ldR1b">λδ-1A</rlink>
172       is released.
173    </news>
174
175    <news class="beta" date="December 2005.">
176       <rlink to="html/documentation.html#ldP1a">First communication on λδ-1</rlink>.
177    </news>
178
179    <news class="alpha" date="May 2004.">
180       The specification of <rlink to="html/specification.html#v1">λδ-1</rlink>
181       is started with Coq 7.3.1.
182    </news>
183
184 <!-- ===================================================================== -->
185
186    <section3 name="visibility">Visibility</section3>
187
188    <news class="alpha" date="June 2014.">
189       The <link to="http://www.google.com/">Google</link>
190       search for "formal system lambda delta" gives
191       5 resources about the λδ family in the first 6 results.
192    </news>
193
194    <news class="alpha" date="June 2014.">
195       The <link to="http://www.yahoo.com/">Yahoo</link>
196       search for "formal system lambda delta" gives
197       4 resources about the λδ family in the first 5 results.
198    </news>
199
200    <footer/>
201 </page>