From http://www.math.tu-berlin.de/~jensen/software/gfan/gfan.html: Gfan is a software package for computing Groebner fans and tropical varieties. These are polyhedral fans associated to polynomial ideals. The maximal cones of a Groebner fan are in bijection with the marked reduced Groebner bases of its defining ideal. The software computes all marked reduced Groebner bases of an ideal. Their union is a universal Groebner basis. The tropical variety of a polynomial ideal is a certain subcomplex of the Groebner 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.
- Marshall Hampton
- William Stein
Anders Nedergaard Jensen for contact info check out http://www.math.tu-berlin.de/~jensen/software/gfan/gfan.html
- clean up Makefile situation, i.e. keep a vanilla Makefile in src
Special Update/Build Instructions
Download the package from http://www.math.tu-berlin.de/~jensen/software/gfan/gfan.html then remove the doc, homepage, and examples subdirectories, which take up most of the space.
gfan-0.3.p4 (Michael Abshoff, May 18th, 2008)
- add 64 bit OSX build support
gfan-0.3.p3 (Michael Abshoff, March 28th 2008)
- clean up SPKG.txt
- fix repo, readd .hgignore
gfan-0.3.p2 (Marshall Hampton 2008)
- Cleaned up a little from previous version, no real changes.
gfan-0.3.p1 (Marshall Hampton 2008)
- Updated to new version
gfan-0.2.2.p3 (Tim Abbott, Feb. 17th, 2008)
- Debianize spkg
- details lost to history