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Wonderful Blowups Associated To Group Actions, Lev A. Borisov, Paul Gunnells
Wonderful Blowups Associated To Group Actions, Lev A. Borisov, Paul Gunnells
Paul Gunnells
A group action on a smooth variety provides it with the natural stratification by irreducible components of the fixed point sets of arbitrary sub-groups. We show that the corresponding maximal wonderful blowup in the sense of MacPherson-Procesi has only abelian stabilizers. The result is inspired by the abelianization algorithm of Batyrev.