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diff --git a/matita/matita/contribs/lambdadelta/basic_2/web/basic_2.ldw.xml b/matita/matita/contribs/lambdadelta/basic_2/web/basic_2.ldw.xml
index cc0a402b0..ca4970bcb 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/web/basic_2.ldw.xml
+++ b/matita/matita/contribs/lambdadelta/basic_2/web/basic_2.ldw.xml
@@ -5,6 +5,7 @@
title = "\lambda\delta version 2"
head = "cic:/matita/lambdadelta/basic_2/ (λδ version 2)"
>
+
Summary of the Specification
Here is a numerical acount of the specification's contents
@@ -25,16 +27,33 @@
pp. 53-78].
+
+ Stage "B"
Context-sensitive subject equivalence
for native type assignment.
-
- Closure of context-sensitive extended computation
- for native validity.
+
+ Stage "A": "Weakening the Applicability Condition"
+
+ Iterated static type assignment defined (more elegantly)
+ as a primitive notion.
+
+
+ Preservation of stratified native validity
+ for context-sensitive computation on terms.
+
+
+ strong qrst-normalization
+ for simply typed terms.
+
+
+ lazy equivalence on local environments
+ addded as q-step to rst-computation on closures
+ (anniversary milestone).
- Parametrized slicing for local environments
+ Parametrized slicing of local environments
comprises both versions of this operation
(one from basic_1, the other used in basic_2 till now).
@@ -42,10 +61,10 @@
Passive support for global environments.
- Reaxiomatized β-reductum as in extended β-reduction
+ Reaxiomatized β-reductum as in rt-reduction.
- Context-sensitive extended strong normalization
+ Context-sensitive strong rt-normalization
for simply typed terms.
@@ -55,13 +74,13 @@
Mutual recursive preservation of stratified native validity
- for "big tree" computation on closures.
+ for rst-computation on closures.
Confluence for context-free parallel reduction on closures.
- Term binders polarized to control ζ-reduction.
+ Term binders polarized to control ζ-reduction (not released).
Context-sensitive subject equivalence