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 = "cic:/matita/lambdadelta/basic_2/ (core λδ version 2)"
9 <sitemap name="sitemap"/>
11 <section>System's Syntax and Behavior</section>
12 <body>This is a summary of the "block structure"
13 of the System's syntactic items and reductions.
15 <table name="basic_2_blk"/>
16 <body>* In terms only.
17 ** In terms and local environments only.
18 *** In global environments only.
19 **** Sort level k in terms only.
23 <section4 name="summary">Summary of the Specification</section4>
24 <body>Here is a numerical account of the specification's contents
27 <table name="basic_2_sum"/>
29 <subsection name="B">Stage "B"</subsection>
30 <news class="alpha" date="Ongoing.">
31 Context-sensitive subject equivalence
32 for native type assignment.
35 <subsection name="A2">Stage "A2": "Extending the Applicability Condition"</subsection>
37 <news class="alpha" date="2016 September 15.">
38 Confluence for context-sensitive parallel r-transition on terms.
40 <news class="alpha" date="2016 April 16.">
41 Grammatical component reconstructed:
42 grammar, relocation, s_transition, s_computation, static
43 (anniversary milestone).
45 <news class="alpha" date="2016 March 25.">
46 Relocation with reference transforming maps (rtmap).
48 <news class="alpha" date="2015 October 9.">
49 λδ version 2A2 is started.
52 <subsection name="A1">Stage "A1": "Extending the Applicability Condition"</subsection>
53 <news class="delta" date="2015 August 27.">
54 λδ version 2A1 appears too complex and is dismissed.
56 <news class="gamma" date="2014 October 28.">
57 λδ version 2A1 is released.
59 <news class="beta" date="2014 September 9.">
60 Iterated static type assignment defined (more elegantly)
61 as a primitive notion.
63 <news class="beta" date="2014 June 18.">
64 Preservation of stratified native validity
65 for context-sensitive computation on terms.
67 <news class="alpha" date="2014 June 9.">
68 Strong qrst-normalization
69 for simply typed terms.
71 <news class="alpha" date="2014 April 16.">
72 Lazy equivalence on local environments
73 added as q-step to rst-computation on closures
74 (anniversary milestone).
76 <news class="alpha" date="2014 January 20.">
77 Parametrized slicing of local environments
78 comprises both versions of this operation
79 (one from basic_1, the other used in basic_2 till now).
81 <news class="alpha" date="2013 August 7.">
82 Passive support for global environments.
84 <news class="alpha" date="2013 July 27.">
85 Reaxiomatized β-reductum as in rt-reduction.
87 <news class="alpha" date="2013 July 20.">
88 Context-sensitive strong rt-normalization
89 for simply typed terms.
91 <news class="alpha" date="2013 April 16.">
92 Reaxiomatized substitution and reduction
93 commute with respect to subclosure
94 (anniversary milestone).
96 <news class="alpha" date="2013 March 16.">
97 Mutual recursive preservation of stratified native validity
98 for rst-computation on closures.
100 <news class="alpha" date="2012 October 16.">
101 Confluence for context-free parallel reduction on closures.
103 <news class="alpha" date="2012 July 26.">
104 Term binders polarized to control ζ-reduction (not released).
106 <news class="alpha" date="2012 April 16.">
107 Context-sensitive subject equivalence
108 for atomic arity assignment
109 (anniversary milestone).
111 <news class="alpha" date="2012 March 15.">
112 Context-sensitive strong normalization
113 for simply typed terms.
115 <news class="alpha" date="2012 January 27.">
116 Support for abstract candidates of reducibility.
118 <news class="alpha" date="2011 September 21.">
119 Confluence for context-sensitive parallel reduction on terms.
121 <news class="alpha" date="2011 September 6.">
122 Confluence for context-free parallel reduction on terms.
124 <news class="alpha" date="2011 April 17.">
125 λδ version 2 is started.
128 <section4 name="structure">Logical Structure of the Specification</section4>
129 <body>This table reports the specification's components and their planes.
131 <table name="basic_2_src"/>