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="2020-09-25.">
30 Improved rst-transition and related theory.
32 <news class="gamma" date="2020-04-16.">
33 Sort hierarchy parameter removed from unbound rt-transition
34 (anniversary milestone).
36 <news class="gamma" date="2020-02-27.">
37 λδ-2B is repackaged without λδ-ground_2.
39 <news class="gamma" date="2019-11-19.">
42 <news class="beta" date="2019-09-03.">
43 Applicability condition is now parametrized
44 with a generic subset of numbers.
46 <news class="beta" date="2019-06-02.">
47 Applicability condition parametrized
48 with an initial interval of numbers
49 allows λδ-2B to generalize both λδ-2A and λδ-1B.
51 <news class="beta" date="2019-04-16.">
52 Extended (λδ-2A) and restricted (λδ-1B) validity is decidable
53 (anniversary milestone).
55 <news class="beta" date="2019-03-25.">
56 Preservation of validity for rt-computation
57 does not need the sort degree parameter
58 (i.e. no induction on the degree).
60 <news class="beta" date="2018-11-01.">
61 Extended (λδ-2A) and restricted (λδ-1B) validity rules justified.
63 <news class="alpha" date="2018-09-21.">
65 confluence of rt-computation and
66 preservation of validity for rt-computation.
68 <news class="alpha" date="2018-06-08.">
69 Behavioral component rt_computation completed.
71 <news class="alpha" date="2018-04-16.">
73 (anniversary milestone).
75 <news class="alpha" date="2018-03-09.">
76 Support for rt-computation completed.
78 <news class="alpha" date="2017-10-17.">
79 Exclusion binder in local environments.
80 Syntactic component updated:
81 syntax, relocation, s_transition, s_computation, static, i_static.
83 <news class="alpha" date="2017-04-16.">
84 Strong rt-normalization
85 for simply typed terms
86 (anniversary milestone).
88 <news class="alpha" date="2017-03-16.">
89 Behavioral component rt_transition completed.
91 <news class="alpha" date="2017-02-19.">
92 Generic candidates of reducibility.
94 <news class="alpha" date="2017-01-17.">
95 Confluence for parallel r-transition on referred entries of local environments.
97 <news class="alpha" date="2016-09-15.">
98 Confluence for context-sensitive parallel r-transition on terms.
100 <news class="alpha" date="2016-04-16.">
101 Syntactic component completed:
102 syntax, relocation, s_transition, s_computation, static
103 (anniversary milestone).
105 <news class="alpha" date="2016-03-25.">
106 Relocation with reference transforming maps (rtmap).
108 <news class="alpha" date="2015-10-09.">
112 <section4 name="structure">Logical Structure of the Specification</section4>
113 <body>This table reports the specification's components and their planes.
115 <table name="basic_2_src"/>