X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fwww%2Flambdadelta%2Fimplementation.html;h=77a7b0f2905e15cf045860416b88a81802f2bb08;hb=644307df315b855c3851f813b04d562acf2db9bc;hp=cb9b23247edeb484cfdd1f099750506ba2d81ebb;hpb=7f349a4f0175068138a341081d0dd14fd9fe4c4a;p=helm.git diff --git a/helm/www/lambdadelta/implementation.html b/helm/www/lambdadelta/implementation.html index cb9b23247..77a7b0f29 100644 --- a/helm/www/lambdadelta/implementation.html +++ b/helm/www/lambdadelta/implementation.html @@ -1,255 +1,274 @@ - - - + + + + + + + + + + \lambda\delta home page + + + + + + +
+ + [lambdadelta home] + +
+
The Formal System λδ (\lambda\delta)
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+ home + + news + + documentation + + implementation + (specifications + library + Helena)
+ Foreword + + Milestones + + Version 2 + + Version 2 + + Background + Core + Applications +
+ Notice + + Visibility + + Version 1 + + Version 1 + +
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- - λδ home page - - - - -
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- [Crux Logo] -

The Formal System λδ (\lambda\delta)
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Towards the unification of terms, types, environments and - contexts

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Computer-checked formal specifications [spacer] +
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+ λδ comes in several versions listed in the following table, + which includes the major milestones: +
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  • Resources
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Computer-checked formal - specifications [Butterfly]

- Resource - 1 below provides for the statically generated natural language - representation of - λδ meta-theory (faster rendering w.r.t. resource 2 below).
- Resource 2 below - provides - for the dynamically generated natural - language representation of - λδ meta-theory (powered by the HELM - rendering engine).
- Remarkably, λδ was born and developed in the digital - format of resource 3 - below, which is not the - formal counterpart of some informal material previously - written on - paper (as it happens for most currently digitalized - Mathematics).
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  1. F. Guidi: lambdadelta - (revised 2011-09). - Formal - specification for Matita 0.5 - (HTML pages generated - by the HELM - rendering engine) - Here are the most relevant theorems proved in the - formal specification: - -
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  2. F. Guidi: lambdadelta - (revised 2011-09). - Formal - specification for Matita 0.5 (HELM directory).
    - Currently, the HELM rendering engine is offline.
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  3. F. Guidi: lambdadelta_1 - (revised 2012-10). -Formal - specification for Coq - 7.3.1 - (source - proof scripts). BibTeX entry.
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Tools [Butterfly]

- [Crux Logo] The λδ - Digital - Library - (LDDL) is part of HELM - and contains a set of - resources expressed in λδ.
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  • Contents: - Landau's "Grundlagen - der Analysis" (from - Jutting's specification in Automath).
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- [Helena Logo] Helena - is a λδ - processor, - implemented in Caml - as a part of - the HELM software, - meant for - testing the stable features of the calculus as well as the - unstable - ones.
- The processor source code is available in the directory /trunk/helm/software/helena/ - of the HELM - Svn - repository. The Svn revisions containing the stable - versions - of  Helena are indicated below.
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  • Version 0.8.2. - In - progress.
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  • Version 0.8.1 - (2010-11). - Exploits a subset of "complete_rg" λδ as the - intermediate language. - Features importation from ".hln" files containing λδ - textual syntax. - The overall validation speed of the "Grundlagen - der - Analysis" increases of 22% with respect to - version 0.8.0. [Svn - revision: 11032] (archived - source code) - -
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  • Version 0.8.0 (2009-09). - Supports - "basic_rg" λδ with naive implementation of - impredicative sort - inclusion. Features - importation from Automath - and exportation to XML. - [Svn - revision: 10304] (archived - source code)
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    • 2009-09. - Jutting's specification of Landau's "Grundlagen - der - Analysis" enters λδ Digital Library.
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    • 2009-06. - Jutting's specification of Landau's "Grundlagen - der - Analysis" is - successfully processed, enabling sort inclusion.
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Other resources [Butterfly]

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  • A Jed mode - for - editing ".hln" files (containing λδ textual syntax): helena.sl - (revised 2010-11).
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  • A logo for λδ: crux_177.png - (revised 2012-09).
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+ 		versionnamedeveloped withstartedannouncedreleaseddismissed
2 + basic_2 + + Matita 0.99.2 + April 2011July 2014Planned in 2014Not planned yet
1 + basic_1 + + Coq 7.3.1 May 2004January 2006November 2006May 2008
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- [Valid HTML 4.01 Transitional] [Use Any - Browser Here] [PNG Used Here]
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- Last update 2014-02-22 by Ferruccio - Guidi
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Tools [spacer] +
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+ [Crux logo] λδ Digital Library (LDDL)
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+ The λδ Digital Library is part of HELM + and contains resources expressed in λδ. +
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+ [Helena logo] Helena
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+ Helena is a λδ processor, + implemented in Caml + as a part of the HELM software, + meant for testing the stable features of the calculus as well as the unstable ones. +
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+ The processor source code is available in the directory + /trunk/helm/software/helena/ + of the HELM Svn repository. + The Svn revisions containing the stable versions of Helena are indicated next. +
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+ + [Valid XHTML 1.1] + + + [Valid CSS level 2] + + + [Generated from XML via XSL] + + + [PNG used here] + + + [Viewable with any browser] + +
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Last update: Sun, 20 Jul 2014 15:02:32 +0200
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