bug_ebuild/gentoo/sci-mathematics/e/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer type="person">
  <email>gienah@gentoo.org</email>
  <name>Mark Wright</name>
</maintainer>
<maintainer type="project">
  <email>sci-mathematics@gentoo.org</email>
  <name>Gentoo Mathematics Project</name>
</maintainer>
<longdescription lang="en">
E is a theorem prover for full first-order logic with equality. It
accepts a problem specification, typically consisting of a number of
first-order clauses or formulas, and a conjecture, again either in
clausal or full first-order form. The system will then try to find a
formal proof for the conjecture, assuming the axioms.

If a proof is found, the system can provide a detailed list of proof
steps that can be individually verified. If the conjecture is
existential (i.e. it’s of the form “there exists an X with property
P”), the latest versions can also provide possible answers (values for
X).

Development of E started as part of the E-SETHEO project at TUM. The
first public release was in in 1998, and the system has been
continuously improved ever since. I believe that E now is one of the
most powerful and friendly reasoning systems for first-order
logic. The prover has successfully participated in many competitions.
</longdescription>
<use>
  <flag name="isabelle">Add integration support for the Isabelle/HOL
  theorem prover.</flag>
</use>
</pkgmetadata>