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Mathieu Vallée

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Preprint Sep 2026

Regular dyadic triangulations of delta-matroid polytopes

Backman and Liu proved that every integral generalized permutohedron of type $A$, and in particular every matroid base polytope, admits a regular unimodular triangulation. The analogous statement fails in type $B$: the delta-matroid simplex \[\operatorname*{conv}\{\mathbf{0},\ e_1+e_2,\ e_1+e_3,\ e_2+e_3\}\] has normal...

Mathieu Vallée · 0 citations

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