Period Map for Non-Compact Holomorphically Symplectic Manifolds
Period Map for Non-Compact Holomorphically Symplectic Manifolds
复制标题
非紧全纯辛流形的周期图
DOI:
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发表时间:
2000
期刊:
影响因子:
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通讯作者:
M. Verbitsky
中科院分区:
文献类型:
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作者:
D. Kaledin;M. Verbitsky
Abstract.We study the deformations of a holomorphic symplectic manifold X, not necessarily compact, over a formal ring. We always assume both X and the symplectic form Ω to be algebraic over
$mathbb{C}.$ We show (under some additional, but mild, assumptions on X) that the coarse deformation space of the pair
$leftlangle {X,Omega }
ight
angle $ exists and is smooth, finite-dimensional and naturally embedded into H2(X). In particular, for an algebraic holomorphic symplectic manifold X which satisfies
$H^i (mathcal{O}_X ) = 0$
for all i > 0, the coarse moduli of formal deformations is isomorphic to Spec
$mathbb{C}left[kern-0.15emleft[ {t_1 , ldots ,t_n }
ight]kern-0.15em
ight],$
where
$t_1 , ldots t_n $ are coordinates in H2(X).