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