[Bug 231186] [NEW PORT] math/gfan and math/gfanlib: Software package for computing Groebner fans and tropical varieties

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231186

--- Comment #5 from commit-hook at freebsd.org ---
A commit references this bug:

Author: tobik
Date: Fri Feb  8 09:27:35 UTC 2019
New revision: 492416
URL: https://svnweb.freebsd.org/changeset/ports/492416

Log:
  New ports: math/gfan, math/gfanlib

  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 Greobner 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.  In addition to the above core functions
  the package contains many tools which are useful in the study of
  Groebner bases, initial ideals and tropical geometry.

  WWW: http://home.math.au.dk/jensen/software/gfan/gfan.html

  PR:           231186
  Submitted by: Lorenzo Salvadore <phascolarctos at protonmail.ch>

Changes:
  head/math/Makefile
  head/math/gfan/
  head/math/gfan/Makefile
  head/math/gfan/distinfo
  head/math/gfan/files/
  head/math/gfan/files/patch-Makefile
  head/math/gfan/files/patch-testsuite_0008PolynomialSetUnion_output
  head/math/gfan/pkg-descr
  head/math/gfan/pkg-message
  head/math/gfan/pkg-plist
  head/math/gfanlib/
  head/math/gfanlib/Makefile
  head/math/gfanlib/distinfo
  head/math/gfanlib/pkg-descr
  head/math/gfanlib/pkg-plist

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