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Isabelle/HOLF Isabelle/HOL with Falso Theorem Proving Group at FU Dietersheim <http://www.fu-dietersheim.de/logik/isabelle/holf/> Version information Version: 1 April 2013 Isabelle/HOLF is still a prototype. Use at own risk! This version of Isabelle/HOL has been tested with Isabelle/2013, but it should be compatible with earlier versions of Isabelle as well. Installation 1. Extract the file HOLF.thy to the directory src/HOL/ of your Isabelle installation. 2. Apply the patch Main.thy.diff in the "src/HOL/" directory, i.e. export Main.thy.diff to some directory (e.g. /tmp/) and run "patch < /path/to/difffile/Main.thy.diff" in the src/HOL directory. 3. Rebuild your HOL heap image by running "bin/isabelle build -b HOL" You can then use the Falso axioms and the exfalso prover in your theories. Alternatively, if you do not want to alter your existing Isabelle installation, you can also simply manually import the HOLF.thy file in any of your Isabelle/HOL theories with the same effect. Examples In this tarball, you can also find the theory Fermat.thy, which illustrates the usage of the HOLF system and the exfalso prover on the example of the Fermat-Wiles Theorem, also known as Fermat's Last Theorem. Contrary to Fermat's original proof (if indeed he even had one), this proof would comfortably fit into any margin. Bug Reporting HOLF is still in the early stages of its development and may therefore still be somewhat unstable. Please report any bugs that you find at our bug tracker: <https://github.com/larsrh/hol-falso/issues> In case you don't have a GitHub account, feel free to contact the authors directly via mail: Manuel Eberl <email@example.com> Lars Hupel <firstname.lastname@example.org> Snail mail contact Fakultaet für Informatik Freie Universitaet Dietersheim Satiergartenstr. 42 D-85386 Dietersheim/Eching Germany __________________________________________________________________ Please report any problems you encounter. While we shall try to be helpful, we can accept no responsibility for the deficiencies of Isabelle, Isabelle/HOL, or your capacity for satire and their consequences. _________________________________________________________________