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="2017 March 16.">
38 First behavioral component reconstructed:
41 <news class="alpha" date="2017 February 19.">
42 Generic candidates of reducibility.
44 <news class="alpha" date="2017 January 17.">
45 Confluence for parallel r-transition on referred entries of local environments.
47 <news class="alpha" date="2016 September 15.">
48 Confluence for context-sensitive parallel r-transition on terms.
50 <news class="alpha" date="2016 April 16.">
51 Syntactic component reconstructed:
52 syntax, relocation, s_transition, s_computation, static
53 (anniversary milestone).
55 <news class="alpha" date="2016 March 25.">
56 Relocation with reference transforming maps (rtmap).
58 <news class="alpha" date="2015 October 9.">
59 λδ version 2A2 is started.
62 <subsection name="A1">Stage "A1": "Extending the Applicability Condition"</subsection>
63 <news class="delta" date="2015 August 27.">
64 λδ version 2A1 appears too complex and is dismissed.
66 <news class="gamma" date="2014 October 28.">
67 λδ version 2A1 is released.
69 <news class="beta" date="2014 September 9.">
70 Iterated static type assignment defined (more elegantly)
71 as a primitive notion.
73 <news class="beta" date="2014 June 18.">
74 Preservation of stratified native validity
75 for context-sensitive computation on terms.
77 <news class="alpha" date="2014 June 9.">
78 Strong qrst-normalization
79 for simply typed terms.
81 <news class="alpha" date="2014 April 16.">
82 Lazy equivalence on local environments
83 added as q-step to rst-computation on closures
84 (anniversary milestone).
86 <news class="alpha" date="2014 January 20.">
87 Parametrized slicing of local environments
88 comprises both versions of this operation
89 (one from basic_1, the other used in basic_2 till now).
91 <news class="alpha" date="2013 August 7.">
92 Passive support for global environments.
94 <news class="alpha" date="2013 July 27.">
95 Reaxiomatized β-reductum as in rt-reduction.
97 <news class="alpha" date="2013 July 20.">
98 Context-sensitive strong rt-normalization
99 for simply typed terms.
101 <news class="alpha" date="2013 April 16.">
102 Reaxiomatized substitution and reduction
103 commute with respect to subclosure
104 (anniversary milestone).
106 <news class="alpha" date="2013 March 16.">
107 Mutual recursive preservation of stratified native validity
108 for rst-computation on closures.
110 <news class="alpha" date="2012 October 16.">
111 Confluence for context-free parallel reduction on closures.
113 <news class="alpha" date="2012 July 26.">
114 Term binders polarized to control ζ-reduction (not released).
116 <news class="alpha" date="2012 April 16.">
117 Context-sensitive subject equivalence
118 for atomic arity assignment
119 (anniversary milestone).
121 <news class="alpha" date="2012 March 15.">
122 Context-sensitive strong normalization
123 for simply typed terms.
125 <news class="alpha" date="2012 January 27.">
126 Generic candidates of reducibility.
128 <news class="alpha" date="2011 September 21.">
129 Confluence for context-sensitive parallel reduction on terms.
131 <news class="alpha" date="2011 September 6.">
132 Confluence for context-free parallel reduction on terms.
134 <news class="alpha" date="2011 April 17.">
135 λδ version 2 is started.
138 <section4 name="structure">Logical Structure of the Specification</section4>
139 <body>This table reports the specification's components and their planes.
141 <table name="basic_2_src"/>