Extension of 2-forms and symplectic varieties
arXiv:math/0010114
Abstract
This paper deals with symplectic varieties which do not have symplectic resolutions. Some moduli spaces of semi-stable torsion-free sheaves on a K3 surface, and symplectic V-manifolds are such varieties. We shall prove local Torelli theorem for symplectic varieties. Some results on symplectic singularities are also included.
26 pages, to appear in J. reine. angew. Math, A footnote is added at (b) of the proof of Proposition 9