X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fwww%2Flambdadelta%2Fspecification.html;h=2abf3281e503b4fbc8590c8bcbf7caa5a93115a3;hb=32def68dd99ad5f20f001e3e76b51afa6f69dec5;hp=0c02414008a49a22f41ac8eccfc4177610ff1a00;hpb=7562d9781dc4f351ddc3b2f8edd21f4976621948;p=helm.git diff --git a/helm/www/lambdadelta/specification.html b/helm/www/lambdadelta/specification.html index 0c0241400..2abf3281e 100644 --- a/helm/www/lambdadelta/specification.html +++ b/helm/www/lambdadelta/specification.html @@ -23,7 +23,7 @@
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@@ -36,18 +36,24 @@ news + + specification + + +
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+ documentation - specification + implementation - +
- - implementation - @@ -56,16 +62,20 @@ milestones + + version 2 + + (background - core - applications) + +
+ version 2 - version 2 - - (background - core - applications) - library + (static LDDL directory) @@ -74,31 +84,32 @@ visibility + + version 1 + + (background - core) + (static HELM directory) version 1 - version 1 + helena - +
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Computer-checked formal specifications [spacer] +
Computer-checked formal specifications [spacer]
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λδ is developed as a machine-checked digital specification. It comes in several versions listed in the next table, which includes the major milestones.
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The life cycle of a specification consists of four periods. Alpha: the definitions are designed and the major propositions are proved, @@ -111,7 +122,7 @@ Delta: after its conclusion, the specification is modified just for maintenance.
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+ Informational pages on the specifications are provided. +
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  • + Notice on displayed numerical acounts: + 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]. +
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  • + Notice on displayed logical structures: + 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). +
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[spacer] λδ version 2 (active)
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The formal specification of λδ version 2 is available in the following formats:
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