collaborators

2 papers

math.AG2002

Small Contractions of Symplectic 4-folds

Jan Wierzba, Jaroslaw A. Wisniewski

We classify small contractions of (holomorphically) symplectic 4-folds.

math.AG1999

Contractions of Symplectic Varieties

Jan Wierzba

We consider birational projective contractions f:X -> Y from a smooth symplectic variety X over the complex numbers. We first show that exceptional rational curves on X deform in a…