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 <news class="gamma" date="2020-12-08.">
30 λδ-2B is repackaged for publication.
32 <news class="gamma" date="2020-09-25.">
33 Improved theory of rst-transition.
35 <news class="gamma" date="2020-04-16.">
36 Sort hierarchy parameter removed from unbound rt-transition
37 (anniversary milestone).
39 <news class="gamma" date="2020-02-27.">
40 λδ-2B is repackaged without λδ-ground.
42 <news class="gamma" date="2019-11-19.">
45 <news class="beta" date="2019-09-03.">
46 Applicability condition is now parametrized
47 with a generic subset of numbers.
49 <news class="beta" date="2019-06-02.">
50 Applicability condition parametrized
51 with an initial interval of numbers
52 allows λδ-2B to generalize both λδ-2A and λδ-1B.
54 <news class="beta" date="2019-04-16.">
55 Extended (λδ-2A) and restricted (λδ-1B) validity is decidable
56 (anniversary milestone).
58 <news class="beta" date="2019-03-25.">
59 Preservation of validity for rt-computation
60 does not need the sort degree parameter
61 (i.e. no induction on the degree).
63 <news class="beta" date="2018-11-01.">
64 Extended (λδ-2A) and restricted (λδ-1B) validity rules justified.
66 <news class="alpha" date="2018-09-21.">
68 confluence of rt-computation and
69 preservation of validity for rt-computation.
71 <news class="alpha" date="2018-06-08.">
72 Behavioral component rt_computation completed.
74 <news class="alpha" date="2018-04-16.">
76 (anniversary milestone).
78 <news class="alpha" date="2018-03-09.">
79 Support for rt-computation completed.
81 <news class="alpha" date="2017-10-17.">
82 Exclusion binder in local environments.
83 Syntactic component updated:
84 syntax, relocation, s_transition, s_computation, static, i_static.
86 <news class="alpha" date="2017-04-16.">
87 Strong rt-normalization
88 for simply typed terms
89 (anniversary milestone).
91 <news class="alpha" date="2017-03-16.">
92 Behavioral component rt_transition completed.
94 <news class="alpha" date="2017-02-19.">
95 Generic candidates of reducibility.
97 <news class="alpha" date="2017-01-17.">
98 Confluence for parallel r-transition on referred entries of local environments.
100 <news class="alpha" date="2016-09-15.">
101 Confluence for context-sensitive parallel r-transition on terms.
103 <news class="alpha" date="2016-04-16.">
104 Syntactic component completed:
105 syntax, relocation, s_transition, s_computation, static
106 (anniversary milestone).
108 <news class="alpha" date="2016-03-25.">
109 Relocation with reference transforming maps (rtmap).
111 <news class="alpha" date="2015-10-09.">
115 <section4 name="structure">Logical Structure of the Specification</section4>
116 <body>This table reports the specification's components and their planes.
118 <table name="basic_2_src"/>