README

moved theory Interval from the AFP

                       The Isabelle System Distribution

Version information

   This is some repository version of Isabelle.

   See the NEWS file in the distribution for details on user-relevant
   changes.

Installation

   Isabelle works on the three main platform families: Linux, Windows,
   and macOS.  The application bundles from the Isabelle web page
   include sources, documentation, and add-on tools for all supported
   platforms.

   Some technical background information may be found in the Isabelle
   System Manual (directory doc).

User interface

   Isabelle/jEdit is an advanced Prover IDE based on jEdit and
   Isabelle/Scala.  It is the main example application of the
   Isabelle/PIDE framework, and the default user interface of
   Isabelle.  It provides a metaphor of continuous proof checking of a
   versioned collection of theory sources, with instantaneous feedback
   in real-time and rich semantic markup associated with the formal
   text.

Other sources of information

  The Isabelle Page

   The Isabelle home page may be accessed from the following mirror
   sites:

     * https://www.cl.cam.ac.uk/research/hvg/Isabelle
     * https://isabelle.in.tum.de
     * https://mirror.cse.unsw.edu.au/pub/isabelle
     * https://mirror.clarkson.edu/isabelle

  Mailing list

   The electronic mailing list [e-mail] provides a
   forum for Isabelle users to discuss problems and exchange
   information.  To join, send a message to
   [e-mail].

  Personal mail

   Lawrence C Paulson
   Computer Laboratory
   University of Cambridge
   JJ Thomson Avenue
   Cambridge CB3 0FD
   England
   E-mail: [e-mail]
   Phone: [phone]
   Fax: [phone]

   or

   Tobias Nipkow
   Institut fuer Informatik
   Technische Universitaet Muenchen
   Boltzmannstr. 3
   D-85748 Garching
   Germany
   E-mail: [e-mail]
   Phone: [phone]
   Fax: [phone]
     _________________________________________________________________

   Please report any problems you encounter. While we shall try to be
   helpful, we can accept no responsibility for the deficiencies of
   Isabelle and their consequences.
     _________________________________________________________________