| 37159 |      1 | Subject: Announcing Isabelle2009-2
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| 9928 |      2 | To: isabelle-users@cl.cam.ac.uk
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|  |      3 | 
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| 37159 |      4 | Isabelle2009-2 is now available.
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| 17544 |      5 | 
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| 37159 |      6 | This release improves upon Isabelle2009-1 in many respects, see the
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|  |      7 | NEWS file in the distribution for more details.  Some notable changes
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| 30848 |      8 | are:
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| 27007 |      9 | 
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| 37317 |     10 | * Explicit proof terms for type class reasoning.
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|  |     11 | 
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| 37353 |     12 | * Robust treatment of concrete syntax for different logical entities;
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|  |     13 | mixfix syntax in local proof context.
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| 37317 |     14 | 
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| 37353 |     15 | * Type declarations and notation within local theory context.
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|  |     16 | 
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|  |     17 | * HOL: package for quotient types.
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| 33873 |     18 | 
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| 37353 |     19 | * HOL code generation: simple concept for abstract datatypes obeying
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|  |     20 | invariants (e.g. red-black trees).
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| 37317 |     21 | 
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| 37353 |     22 | * HOL: new development of the Reals using Cauchy Sequences.
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| 37317 |     23 | 
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| 37353 |     24 | * HOL: reorganization of abstract algebra type class hierarchy.
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| 37317 |     25 | 
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| 37353 |     26 | * HOL: substantial reorganization of main library and related tools.
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|  |     27 | 
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|  |     28 | * HOLCF: reorganization of 'domain' package.
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|  |     29 | 
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| 12983 |     30 | 
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| 37159 |     31 | You may get Isabelle2009-2 from the following mirror sites:
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| 9928 |     32 | 
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| 27085 |     33 |   Cambridge (UK)       http://www.cl.cam.ac.uk/research/hvg/Isabelle/
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| 17696 |     34 |   Munich (Germany)     http://isabelle.in.tum.de/
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| 14616 |     35 |   Sydney (Australia)   http://mirror.cse.unsw.edu.au/pub/isabelle/
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