news:release_4_4

Polymake 4.4

Release dates:

  • 4.4: May 18th, 2021

– general –

  • fix various typos
  • various bugfixes

– distribution –

  • support for clang 12 and gcc 11
  • fix build on FreeBSD (thanks Philipp Ost)

– interfaces –

  • libnormaliz: add rules for representation conversion

– fan –

  • SubdivisionOfPoints: fix bug in MIN_WEIGHTS for non-triangulations
  • HyperplaneArrangements: add rule for property RAYS_IN_HYPERPLANES
  • PolyhedralFan: Refactor code for symmetric fans
    1. remove properties from PolyhedralFan that depend on GROUP
    2. access any group action via GROUP.*_ACTION
    3. Enhance F_VECTOR computation for PolyhedralFan with group action to consume less memory (and work with QuadraticExtension)
  • refactored barycentric_subdivision to speed up by depending less on perl
  • DisjointStackyFan: new data structure for stacky fans whose orbits are disjoint
    1. properties STACKY_FACES, STACKY_F_VECTOR
    2. user_functions stacky_fan(Cone), stacky_second_bsd(DisjointStackyFan)
  • visualization:
    1. partly dropped support for labels seperated by whitespaces
    2. fixed array/code/hash vertex decor handling in PolyhedralComplex→VISUAL
    3. refactored SubdivisionOfPoints→VISUAL

– fulton –

  • TORIC_IDEAL renamed to CONE_TORIC_IDEAL (and moved to application polytope)

– ideal –

  • added object specialization Ideal::Binomial for (CONE_)TORIC_IDEAL
    1. added properties BINOMIAL_GENERATORS, GROEBNER.BINOMIAL_BASIS

– polytope –

  • minkowski_sum_fukuda refactored to use reverse search template
  • mixed_volume: fix bug that produces an ERROR depending on the order of input polytopes
  • add client for generalized_permutahedra
  • add the function projective_symmetry_group to compute the group of projective automorphisms of a polytope
  • poly2lp supports MixedIntegerLinearProgram as argument
  • GROEBNER_BASIS renamed to TORIC_IDEAL and migrated to a proper ideal::Ideal object
  • visualization:
    1. refactored decor handling for unbounded polytopes
    2. added decor options for SITES in VoronoiPolyhedron→VISUAL_VORONOI

– tropical –

  • visualization:
    1. added pseudovertex decor options in Polytope→VISUAL/VISUAL_SUBDIVISION
  • news/release_4_4.txt
  • Last modified: 2021/05/27 10:28
  • by benmuell