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authorMichael Orlitzky <mjo@gentoo.org>2020-03-06 11:56:00 -0500
committerMichael Orlitzky <mjo@gentoo.org>2020-03-06 11:56:00 -0500
commitf2f461b73ee564076c4c71d16754364677de0e55 (patch)
treedc7b636ba6ac41d1a1c8f3f9cc9b69affe2b1be0 /sci-mathematics/gfan
parentsci-mathematics/gfan: new version 0.6.2. (diff)
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sci-mathematics/gfan: improve the long description in metadata.xml.
Package-Manager: Portage-2.3.84, Repoman-2.3.20 Signed-off-by: Michael Orlitzky <mjo@gentoo.org>
Diffstat (limited to 'sci-mathematics/gfan')
-rw-r--r--sci-mathematics/gfan/metadata.xml17
1 files changed, 16 insertions, 1 deletions
diff --git a/sci-mathematics/gfan/metadata.xml b/sci-mathematics/gfan/metadata.xml
index abc08ece6082..c9e1ddd54b35 100644
--- a/sci-mathematics/gfan/metadata.xml
+++ b/sci-mathematics/gfan/metadata.xml
@@ -6,6 +6,21 @@
<name>Gentoo Mathematics Project</name>
</maintainer>
<longdescription lang="en">
- gfan is a computer algebra tool to compute Groebner fans and tropical varieties.
+ Gfan is a software package for computing Gröbner fans and tropical
+ varieties. These are polyhedral fans associated to polynomial
+ ideals. The maximal cones of a Gröbner fan are in bijection with the
+ marked reduced Gröbner bases of its defining ideal. The software
+ computes all marked reduced Gröbner bases of an ideal. Their union
+ is a universal Gröbner basis. The tropical variety of a polynomial
+ ideal is a certain subcomplex of the Gröbner fan. Gfan contains
+ algorithms for computing this complex for general ideals and
+ specialized algorithms for tropical curves, tropical hypersurfaces
+ and tropical varieties of prime ideals. In addition to the above
+ core functions the package contains many tools which are useful in
+ the study of Gröbner bases, initial ideals and tropical
+ geometry. The full list of commands can be found in Appendix B of
+ the manual. For ordinary Gröbner basis computations Gfan is not
+ competitive in speed compared to programs such as CoCoA, Singular
+ and Macaulay2.
</longdescription>
</pkgmetadata>