Polymake 4.5 [polymake wiki]

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====== Polymake 4.5 ======

Release dates: 
  * 4.5: September 29th, 2021

==== Changelog ====

-- general --
  * various bugfixes

-- interfaces --
  * support bliss >=0.76
  * extend flint interface for computations over ZZ/nZZ

-- common --
  * QuadraticExtension: components may be accessed using $qe->{a,b,r}
  * fix bug giving wrong signs of determinant occasionally

-- graph --
  * new property type DoublyConnectedEdgeList used for Conway notation and hyperbolic surfaces

-- polytope --
  * generalized_permutahedron: introduce scalar template
  * SIM_body and pitman_stanley: special constructions of generalized permutahedra
  * gelfand_tsetlin for producing Gelfand-Tsetlin polytopes
  * change the function linear_symmetries for matrices to work not only with Rational
  * refactor the function projective_symmetries to improve speed
  * CHIROTOPE: enabled generic implementation
  * conway notation: a way to produce many 3-polytopes combinatorially
  * mps2poly and poly2mps: add new functions to read and write mps files
  * new object QuotientSpace obtained from a polytope by gluing faces
  * fix bug in minkowski_sum_fukuda that prevented termination occasionally
  * normalized_smooth_volume: Lawrence algorithm for volume of a smooth polytope

-- fan --
  * replace incorrect fan::stacky_second_bsd() by correct and more efficient tropical::moduli_cell_of_curve()
  * new function stacky_fundamental_domain() for fundamental domains of group actions that permute coordinates

-- tropical --
  * new type Curve<Scalar> for abstract tropical curves, with support for vertex and edge weights, marked edges, and inequalities
  * new functions moduli_cell(Curve) and moduli_space(Curve +) for gluing moduli cells of curves together
  * new functions polynomial_support(Polynomial, Vector) and polynomial_vanishes(Polynomial, Vector) for checking the vanishing of a tropical polynomial
  * tropical Voronoi diagrams refactored, added experimental code to produce list of semi-polytropes for a tropical Voronoi diagram
  * fix dehomogenization issue in set_theoretic_intersection