ANNOUNCE
author paulson
Sat Jul 31 20:54:23 2004 +0200 (2004-07-31)
changeset 15094 a7d1a3fdc30d
parent 14624 9b3397a848c3
child 17544 929d157d4369
permissions -rw-r--r--
conversion of Hyperreal/{Fact,Filter} to Isar scripts
     1 Subject: Announcing Isabelle2004
     2 To: isabelle-users@cl.cam.ac.uk
     3 
     4 Isabelle2004 is now available.
     5 
     6 This release provides many improvements and a few substantial advances over
     7 Isabelle2003.  The most prominent highlights of Isabelle2004 are as follows
     8 (see the NEWS of the distribution for more details):
     9 
    10 
    11 * New image HOL4 with imported library from HOL4 system on top of
    12   HOL-Complex (about 2500 additional theorems). 
    13 
    14 * New theory Ring_and_Field with over 250 basic numerical laws, 
    15   all proved in axiomatic type classes for semirings, rings and fields.
    16 
    17 * Type "rat" of the rational numbers available in HOL-Complex.
    18 
    19 * New locale "ring" for non-commutative rings in HOL-Algebra.
    20 
    21 * New theory of matrices with an application to linear programming in
    22   HOL-Matrix.
    23 
    24 * Improved locales (named proof contexts), instantiation of locales.
    25 
    26 * Improved handling of linear and partial orders in simplifier.
    27  
    28 * New "specification" command for definition by specification.
    29 
    30 * New Isar command "finalconsts" prevents constants being given a definition
    31   later.
    32 
    33 * Command "arith" now generates counterexamples for reals as well.
    34 
    35 * New "quickcheck" command to search for counterexamples of executable goals.
    36   (see HOL/ex/Quickcheck_Examples.thy)
    37 
    38 * New "refute" command to search for finite countermodels of goals.
    39   (see HOL/ex/Refute_Examples.thy)
    40 
    41 * Presentation and x-symbol enhancements, greek letters and sub/superscripts
    42   allowed in identifiers.
    43 
    44 
    45 You may get Isabelle2004 from the following mirror sites:
    46 
    47   Cambridge (UK)       http://www.cl.cam.ac.uk/Research/HVG/Isabelle/dist/
    48   Munich (Germany)     http://isabelle.in.tum.de/dist/
    49   Sydney (Australia)   http://mirror.cse.unsw.edu.au/pub/isabelle/
    50 
    51 Gerwin Klein
    52 Tobias Nipkow
    53 Larry Paulson