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commit: f2f461b73ee564076c4c71d16754364677de0e55 |
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Author: Michael Orlitzky <mjo <AT> gentoo <DOT> org> |
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AuthorDate: Fri Mar 6 16:56:00 2020 +0000 |
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Commit: Michael Orlitzky <mjo <AT> gentoo <DOT> org> |
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CommitDate: Fri Mar 6 16:56:00 2020 +0000 |
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URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f2f461b7 |
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|
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sci-mathematics/gfan: improve the long description in metadata.xml. |
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Package-Manager: Portage-2.3.84, Repoman-2.3.20 |
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Signed-off-by: Michael Orlitzky <mjo <AT> gentoo.org> |
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sci-mathematics/gfan/metadata.xml | 17 ++++++++++++++++- |
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1 file changed, 16 insertions(+), 1 deletion(-) |
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diff --git a/sci-mathematics/gfan/metadata.xml b/sci-mathematics/gfan/metadata.xml |
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index abc08ece608..c9e1ddd54b3 100644 |
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--- a/sci-mathematics/gfan/metadata.xml |
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+++ b/sci-mathematics/gfan/metadata.xml |
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@@ -6,6 +6,21 @@ |
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<name>Gentoo Mathematics Project</name> |
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</maintainer> |
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<longdescription lang="en"> |
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- gfan is a computer algebra tool to compute Groebner fans and tropical varieties. |
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+ Gfan is a software package for computing Gröbner fans and tropical |
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+ varieties. These are polyhedral fans associated to polynomial |
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+ ideals. The maximal cones of a Gröbner fan are in bijection with the |
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+ marked reduced Gröbner bases of its defining ideal. The software |
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+ computes all marked reduced Gröbner bases of an ideal. Their union |
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+ is a universal Gröbner basis. The tropical variety of a polynomial |
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+ ideal is a certain subcomplex of the Gröbner fan. Gfan contains |
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+ algorithms for computing this complex for general ideals and |
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+ specialized algorithms for tropical curves, tropical hypersurfaces |
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+ and tropical varieties of prime ideals. In addition to the above |
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+ core functions the package contains many tools which are useful in |
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+ the study of Gröbner bases, initial ideals and tropical |
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+ geometry. The full list of commands can be found in Appendix B of |
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+ the manual. For ordinary Gröbner basis computations Gfan is not |
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+ competitive in speed compared to programs such as CoCoA, Singular |
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+ and Macaulay2. |
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</longdescription> |
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</pkgmetadata> |
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