Grothendieck weights on permutohedral and matroidal fans are characterized by a K-balancing condition with an explicit ring product, yielding a matroid-only motivic Chern class for hyperplane arrangement complements in wonderful compactifications.
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Grothendieck Weights on Permutohedral Varieties and Matroids
Grothendieck weights on permutohedral and matroidal fans are characterized by a K-balancing condition with an explicit ring product, yielding a matroid-only motivic Chern class for hyperplane arrangement complements in wonderful compactifications.