### D.15.8 gitfan_lib

Library:
  gitfan.lib
Purpose:
  Compute GIT-fans.

Authors:
  Janko Boehm boehm@mathematik.uni-kl.de
  Simon Keicher keicher@mail.mathematik.uni-tuebingen.de
  Yue Ren ren@mathematik.uni-kl.de

Overview:
  This library computes GIT-fans, torus orbits and GKZ-fans. It uses the package 'gfanlib' by Anders N. Jensen
  and some algorithms have been outsourced to C++ to improve the performance. Check https://github.com/skeicher/gitfan_singular for updates.

Procedures:

> D.15.8.1 afaces |  | Returns a list of intvecs that correspond to all a-faces
> D.15.8.2 gitCone |  | Returns the GIT-cone around the given weight vector w
> D.15.8.3 gitFan |  | Returns the GIT-fan of the H-action defined by Q on V(a)
> D.15.8.4 gkzFan |  | Returns the GKZ-fan of the matrix Q
> D.15.8.5 isAface |  | Checks whether intvec corresponds to an ideal-face
> D.15.8.6 orbitCones |  | Returns the list of all projected a-faces

User manual for Singular version 4-0-3, 2016, generated by texi2html.