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Subject: Announcing Isabelle2009-2
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To: isabelle-users@cl.cam.ac.uk
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Isabelle2009-2 is now available.
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This release improves upon Isabelle2009-1 in many respects, see the
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NEWS file in the distribution for more details. Some notable changes
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are:
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* Explicit proof terms for type class reasoning.
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* Robust treatment of concrete syntax for different logical entities;
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mixfix syntax in local proof context.
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* Type declarations and notation within local theory context.
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* HOL: package for quotient types.
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* HOL code generation: simple concept for abstract datatypes obeying
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invariants (e.g. red-black trees).
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* HOL: new development of the Reals using Cauchy Sequences.
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* HOL: reorganization of abstract algebra type class hierarchy.
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* HOL: substantial reorganization of main library and related tools.
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* HOLCF: reorganization of 'domain' package.
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You may get Isabelle2009-2 from the following mirror sites:
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Cambridge (UK) http://www.cl.cam.ac.uk/research/hvg/Isabelle/
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Munich (Germany) http://isabelle.in.tum.de/
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Sydney (Australia) http://mirror.cse.unsw.edu.au/pub/isabelle/
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