1 <?xml version="1.0" encoding="UTF-8"?>
3 <page xmlns="http://lambdadelta.info/"
4 description = "lambdadelta version 2"
5 title = "lambdadelta version 2"
6 head = "cic:/matita/lambdadelta/basic_2/ (λδ version 2)"
8 <section>System's Syntax and Behavior</section>
9 <body>This is a summary of the "block structure"
10 of the System's syntactic items and reductions.
12 <table name="basic_2_blk"/>
13 <body>* In terms only.
14 ** In terms and local environments only.
15 *** In global environments only.
16 **** Sort level k in terms only.
19 <section>Summary of the Specification</section>
20 <body>Here is a numerical acount of the specification's contents
23 <table name="basic_2_sum"/>
24 <news date="In progress.">
25 Context-sensitive subject equivalence
26 for native type assignment.
28 <news date="In progress.">
29 Closure of extended context-sensitive computation
32 <news date="In progress.">
33 Extended context-sensitive strong normalization
34 for simply typed terms.
36 <news date="2013 April 16.">
37 Reaxiomatized substitution and reduction
38 commute with respect to subclosure
39 (anniversary milestone).
41 <news date="2013 March 16.">
42 Mutual recursive preservation of stratified native validity
43 for hyper computation on closures.
45 <news date="2012 October 16.">
46 Confluence for context-free parallel reduction on closures.
48 <news date="2012 July 26.">
49 Term binders polarized to control ζ reduction.
51 <news date="2012 April 16.">
52 Context-sensitive subject equivalence
53 for atomic arity assignment
54 (anniversary milestone).
56 <news date="2012 March 15.">
57 Context-sensitive strong normalization
58 for simply typed terms.
60 <news date="2012 January 27.">
61 Support for abstract candidates of reducibility.
63 <news date="2011 September 21.">
64 Confluence for context-sensitive parallel reduction on terms.
66 <news date="2011 September 6.">
67 Confluence for context-free parallel reduction on terms.
69 <news date="2011 April 17.">
73 <section>Logical Structure of the Specification</section>
74 <body>The source files are grouped in planes and components
75 according to the following table.
76 A notation file covering the whole specification is provided.
77 The notation for the relations or functions introduced in each file
78 is shown in parentheses (? are placeholders).
80 <table name="basic_2_src"/>
82 <section>Physical Structure of the Specification</section>
83 <body>The source files are grouped in directories,
84 one for each component.