wenzelm@37159: Subject: Announcing Isabelle2009-2
wenzelm@9928: To: isabelle-users@cl.cam.ac.uk
wenzelm@9928: 
wenzelm@37159: Isabelle2009-2 is now available.
wenzelm@12927: 
wenzelm@37159: This release improves upon Isabelle2009-1 in many respects, see the
wenzelm@37159: NEWS file in the distribution for more details.  Some notable changes
wenzelm@30848: are:
wenzelm@9928: 
haftmann@37314: * Explicit proof terms for type class reasoning.
wenzelm@27066: 
wenzelm@37353: * Robust treatment of concrete syntax for different logical entities;
wenzelm@37353: mixfix syntax in local proof context.
haftmann@37314: 
wenzelm@37353: * Type declarations and notation within local theory context.
haftmann@37314: 
wenzelm@37353: * HOL: package for quotient types.
haftmann@37314: 
wenzelm@37353: * HOL code generation: simple concept for abstract datatypes obeying
wenzelm@37353: invariants (e.g. red-black trees).
haftmann@37314: 
wenzelm@37353: * HOL: new development of the Reals using Cauchy Sequences.
haftmann@37314: 
wenzelm@37353: * HOL: reorganization of abstract algebra type class hierarchy.
wenzelm@37353: 
wenzelm@37353: * HOL: substantial reorganization of main library and related tools.
wenzelm@37353: 
wenzelm@37353: * HOLCF: reorganization of 'domain' package.
wenzelm@37353: 
haftmann@33866: 
wenzelm@37159: You may get Isabelle2009-2 from the following mirror sites:
wenzelm@9928: 
haftmann@27085:   Cambridge (UK)       http://www.cl.cam.ac.uk/research/hvg/Isabelle/
haftmann@17696:   Munich (Germany)     http://isabelle.in.tum.de/
kleing@14616:   Sydney (Australia)   http://mirror.cse.unsw.edu.au/pub/isabelle/