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author haftmann
Sat, 04 Jun 2005 21:43:55 +0200
changeset 16240 95cc0e8f8a17
parent 16233 e634d33deb86
child 16245 bad9d73aa063
permissions -rw-r--r--
added shellcmd style

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        <h2>What is Isabelle?</h2> 
        <p>
        Isabelle is a popular generic theorem proving environment
        developed at Cambridge University (<a
        href="http://www.cl.cam.ac.uk/users/lcp/">Larry Paulson</a>)
        and TU Munich (<a href="http://www.in.tum.de/~nipkow/">Tobias
        Nipkow</a>).  See the <a href="overview.html">Isabelle
        overview</a>.
        </p>
        <p>
        These pages provide general information on Isabelle, more
        specific information is available from the local pages
        </p>

          <ul>

            <li><a href="http://www.cl.cam.ac.uk/Research/HVG/Isabelle/cambridge.html"><strong>Isabelle
                  at Cambridge</strong></a></li>

            <li><a href="http://www4.in.tum.de/proj/theoremprov/group.html"><strong>Isabelle
                   at Munich</strong></a></li>

          </ul>

          <p>
          See there for information on projects done with Isabelle,
          mailing list archives, research papers, the Isabelle
          bibliography, and Isabelle workshops and courses.
          </p>


        <h2>Coming soon: Isabelle 2005</h2>
         <p>New features in the upcoming Isabelle 2005 will include</p>
              <ul>
                <li>New commands for instantiating locales</li>
                <li>New command for finding matching rewrite rules</li>
                <li>Finding theorems by term patterns</li>
                <li>New automatic transitivity reasoner</li>
                <li>New command for ad-hoc theory viewing and printing</li>
                <li>Much extended and improved theory of finite sets</li>
                <li>New syntax that will allow &gt; and &gt;= in addition to &lt; and
                &lt;=</li>
              </ul>

        <h2>Isabelle 2004</h2> 

<p>New features in Isabelle 2004 include</p>

<ul>
<li>New image HOL4 with imported library from HOL4 system on top of
  HOL-Complex (about 2500 additional theorems).</li>

<li>New theory Ring_and_Field with over 250 basic numerical laws, 
  all proved in axiomatic type classes for semirings, rings and fields.</li>

<li>New locale <code>ring</code> for non-commutative rings in HOL-Algebra.</li>

<li>Type <code>rat</code> of the rational numbers available in HOL-Complex.</li>

<li>New theory of matrices with an application to linear programming in HOL-Matrix.</li>

<li>Improved locales (named proof contexts), instantiation of locales.</li>

<li>Improved handling of linear and partial orders in simplifier.</li>
 
<li>New <code>specification</code> command for definition by specification.</li>  

<li>New Isar command <code>finalconsts</code> prevents constants being given a definition later.</li>  

<li><code>arith</code> now generates counterexamples for reals as well.</li>

<li>New <code>quickcheck</code> command
    to search for counterexamples of executable goals.
  (see HOL/ex/Quickcheck_Examples.thy)</li>
<li>New <code>refute</code> command
    to search for finite countermodels of goals.
  (see HOL/ex/Refute_Examples.thy)
</li>

<li>Presentation and x-symbol enhancements, greek letters and
sub/superscripts allowed in identifiers.</li>
</ul>

<p><a href="isabelle/Isabelle/NEWS">[Complete Changelog]</a></p>

<h2>Download</h2>

<p>
The Isabelle distribution is available
from several <a href="dist/index.html">mirror sites</a>.  It includes
source and binary packages and browsable documentation. You can also
browse the <a href="library/index.html">Isabelle theory library</a>
online. 
</p>

<p>
Use the mailing list <a
href="&#109;&#97;&#105;&#108;&#116;&#111;:&#105;&#115;&#97;&#98;&#101;&#108;&#108;&#101;-&#117;&#115;&#101;&#114;&#115;&#64;&#99;&#108;&#46;&#99;&#97;&#109;&#46;&#97;&#99;&#46;&#117;&#107;">&#105;&#115;&#97;&#98;&#101;&#108;&#108;&#101;-&#117;&#115;&#101;&#114;&#115;&#64;&#99;&#108;&#46;&#99;&#97;&#109;&#46;&#97;&#99;&#46;&#117;&#107;</a>
and its <a href="http://www.cl.cam.ac.uk/users/lcp/archive/">archive</a> to
discuss problems and results.  To subscribe, <a href="&#109;&#97;&#105;&#108;&#116;&#111;:&#108;&#99;&#112;&#64;&#99;&#108;&#46;&#99;&#97;&#109;&#46;&#97;&#99;&#46;&#117;&#107;?subject=subscribe&amp;body=Please%20add%20me%20to%20the%20Isabelle%20mailing%20list">contact Larry Paulson</a>.
</p>

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