ANNOUNCE

have SMT solvers report the number of facts that they should have by default in Sledgehammer -- the information might not seem to belong there but it also belongs nowhere else, for how is Sledgehammer to know how different solvers deal with hundreds of facts?

Subject: Announcing Isabelle2009-2
To: [e-mail]

Isabelle2009-2 is now available.

This release improves upon Isabelle2009-1 in many respects, see the
NEWS file in the distribution for more details.  Some notable changes
are:

* Explicit proof terms for type class reasoning.

* Robust treatment of concrete syntax for different logical entities;
mixfix syntax in local proof context.

* Type declarations and notation within local theory context.

* HOL: package for quotient types.

* HOL code generation: simple concept for abstract datatypes obeying
invariants (e.g. red-black trees).

* HOL: new development of the Reals using Cauchy Sequences.

* HOL: reorganization of abstract algebra type class hierarchy.

* HOL: substantial reorganization of main library and related tools.

* HOLCF: reorganization of 'domain' package.


You may get Isabelle2009-2 from the following mirror sites:

  Cambridge (UK)       http://www.cl.cam.ac.uk/research/hvg/Isabelle/
  Munich (Germany)     http://isabelle.in.tum.de/
  Sydney (Australia)   http://mirror.cse.unsw.edu.au/pub/isabelle/