-*- outline -*-* proofgeneral. $ sudo apt-get install proofgeneral $ sudo apt-get install proofgeneral-coq $ sudo apt-get install proofgeneral-misc $ sudo apt-get install proofgeneral-doc $ sudo apt-get install proofgeneral-minlogor build from source: $ make clean $ make compile EMACS=xemacs $ cat ~/.emacs...(load-file "dir/generic/proof-site.el")...See http://proofgeneral.inf.ed.ac.uk/* Isabelle.Isabelle is a generic proof assistant.It allows mathematical formulas to be expressed in a formal language andprovides tools for proving those formulas in a logical calculus. The mainapplication is the formalization of mathematical proofs and in particularformal verification, which includes proving the correctness of computerhardware or software and proving properties of computer languages andprotocols.See http://isabelle.in.tum.de/overview.html http://en.wikipedia.org/wiki/Isabelle_(theorem_prover)* IsarMathLib.This site is an experimental HTML rendering of fragments of the IsarMathLibproject. IsarMathLib is a library of mathematical proofs formally verified bythe Isabelle theorem proving environment. The formalization is based on theZermelo-Fraenkel set theory.See http://isarmathlib.org/