Polymake 4.2

Release dates:

• 4.2: September 18th, 2020

– general –

• adjust c++ version check for compilers with incomplete c++17 support

– common –

• fix bug in back() of Bitset
• implement p-adic valuation of rational numbers (via flint)
• fix bug in normalization of QuadraticExtension

– fan –

• fix bug in HyperplaneArrangement when hyperplane is parallel to facet of

SUPPORT cone

– polytope –

• fix bug in included_polyhedra for empty polyhedra
• various ball containment functions for polytopes added: contains_ball,

contained_in_ball, minimal_ball, maximal_ball

• refactor containment checks

– topaz –

• documentation enhanced, several examples added
• implement function to compute broken circuit complex of a matroid

– tropical –

• refactor functions for computing tropical Pluecker vectors