Please register

Before downloading Proof General, please register. It's free, it only takes a moment. If you have already registered you do not need to do so again.

You may like to join the Proof General mailing list. Developers and beta-testers may like to download a development release of Proof General. If you use an old version of a proof assistant, you may need to download one of the previous releases.

Proof General is distributed under the terms of the .
See below for software pre-requisites for running Proof General.

Proof General Version 3.4, to be released August 2002.

The next stable version of Proof General will be 3.4, to be released in August. Until then, please try a development release and report any difficulties, to help make the next release of Proof General as robust as possible. Thanks!

What you need to run Proof General

To run Proof General, you must have:

• Version 21.1 or later of XEmacs (this UK ftp mirror may help).
  or version 20.7 of the much poorer GNU GNU Emacs.
  Both Emacsen are available for a variety of platforms, including Unix variants and Windows 95/98/NT/2k.
• One or more of the supported proof assistants. Or write your own support for a new assistant.
  See the front page for links to supported assistants.

There are also some optional components for using Proof General:

• For displaying logical and mathematical symbols, the excellent X-Symbol package.
  It's very easy to install. See here for installation notes.
  X-Symbol presently only works with XEmacs on systems running X.

All components mentioned above are distributed under the GPL license.

Easy installation of Proof General

To use Proof General, simply unpack the sources with

tar xpzf ProofGeneral-3.3.tar.gz

(use gunzip first in place of z if you don't have GNU tar),
and then add this one line to your .emacs file:

(load-file "directory/generic/proof-site.el")

Where directory is the directory in which you unpacked the sources.
If you use the RPM package, directory is /usr/share/emacs/ProofGeneral

If you're using Windows, then download the zip file.
Use a zip file utility to unpack it somewhere, for example c:\\ProofGeneral

Further customization is possible via the Customize menus in Emacs.
See the file in the distribution for more details.

Easy installation of X-Symbol

X-Symbol is easy to install and configures itself automatically.

Simply download the binary package file, and do something like this to install in your home directory:

mkdir -p ~/.xemacs
cd ~/.xemacs
tar xpzf ../x-symbol-pkg.tar.gz

NB: if you have version 21.x of XEmacs, you may need to install x-symbol inside a subdirectory ~/.xemacs/xemacs-packages instead of ~/.xemacs.