X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=helm%2Fwww%2Flambdadelta%2Fweb%2Fhome%2Fspecification.ldw.xml;h=969e3fd004acbf792c91ab4910b29f5683f01a07;hb=bc389dd4724959688aafc1ede450794f47b8d0b5;hp=b88abf3a1c36290debcf6592226ffdc5ec4156b5;hpb=f72807cb8834aa8991919e365b57d553e3674908;p=helm.git
diff --git a/helm/www/lambdadelta/web/home/specification.ldw.xml b/helm/www/lambdadelta/web/home/specification.ldw.xml
index b88abf3a1..969e3fd00 100644
--- a/helm/www/lambdadelta/web/home/specification.ldw.xml
+++ b/helm/www/lambdadelta/web/home/specification.ldw.xml
@@ -3,27 +3,26 @@
Computer-checked formal specifications
- λδ is developed as a machine-checked digital specification.
- It comes in several versions listed in the next table,
- which includes the major milestones.
+ The systems of the λδ family are developed as machine-checked digital specifications,
+ and are listed in the next table, which includes the major milestones.
The life cycle of a specification consists of four periods.
-
+
the definitions are designed and the major propositions are proved,
then the calculus is announced with a presentation.
-
+
major changes and additions may occur before the calculus is released on paper.
-
+
subsequent improvements occur until the specification is completed or superseded,
while major changes and additions are announced and reported on paper.
-
+
after its conclusion, the specification is modified just for maintenance.
@@ -31,20 +30,28 @@
Informational pages on the specifications are provided.
-
-
+
+
nodes are counted according to the "intrinsic complexity measure"
[F. Guidi: "Procedural Representation of CIC Proof Terms"
Journal of Automated Reasoning 44(1-2), Springer (February 2010), pp. 53-78].
-
-
+
+
from the logical standpoint, the source scripts are grouped in "planes"
and these are grouped in "components";
the notation for the relations or functions
introduced in each script, is shown in parentheses (? are placeholders).
+
+
+ λδ version 3 (proposed)
+
+ The formal specification of λδ version 3
+ is forthcoming.
+
+
λδ version 2 (active)
@@ -56,7 +63,7 @@
lambdadelta_2A1 for Matita 0.99.2
- (revised ).
+ (revised ).
Source scripts.
Documentation (R2c).
@@ -64,7 +71,7 @@
The scripts are grouped in directories, first by part, then by component.
-
+
the scripts are checked by the latest version of Matita from
HELM Subversion repository
at path <trunk/matita/>.
@@ -89,11 +96,11 @@
lambdadelta_1 for Coq 7.3.1
- (revised ).
+ (revised ).
Source scripts.
Documentation (J1a).
-
+
17 new lemmas and former lemma "eq_nat_dec" renamed as "nat_dec_neg".
@@ -104,7 +111,7 @@
lambdadelta_1 for Matita 0.5
- (revised ).
+ (revised ).
Static HTML pages generated by the HELM rendering engine.
@@ -131,9 +138,9 @@
lambdadelta_1 for Matita 0.5
- (revised ).
+ (revised ).
HELM directory.
-
+