We introduce the notion of induced birational transformations of irreducible holomorphic symplectic sixfolds of the sporadic deformation type discovered by O'Grady. We give a criterion to determine when a manifold of OG6 type is birational to a moduli space of sheaves on an abelian surface. Then we determine when a birational transformation of the moduli space is induced by an automorphism of the abelian surface. Referring to the Mongardi-Rapagnetta-Sacca birational model of manifolds of OG6 type, we give a result to determine when a birational transformation is induced at the quotient. We give an application of these criteria in the non-symplectic case.
Grossi, A. (2021). Induced birational transformations on O'Grady's sixfolds. JOURNAL OF THE LONDON MATHEMATICAL SOCIETY, 105(1), 665-690 [10.1112/jlms.12538].
Induced birational transformations on O'Grady's sixfolds
Grossi, Annalisa
2021
Abstract
We introduce the notion of induced birational transformations of irreducible holomorphic symplectic sixfolds of the sporadic deformation type discovered by O'Grady. We give a criterion to determine when a manifold of OG6 type is birational to a moduli space of sheaves on an abelian surface. Then we determine when a birational transformation of the moduli space is induced by an automorphism of the abelian surface. Referring to the Mongardi-Rapagnetta-Sacca birational model of manifolds of OG6 type, we give a result to determine when a birational transformation is induced at the quotient. We give an application of these criteria in the non-symplectic case.File | Dimensione | Formato | |
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