Mathematics – Algebraic Geometry
Scientific paper
2006-03-02
Mathematics
Algebraic Geometry
14pages
Scientific paper
This note gives a generalization of spherical twists, and describe the
autoequivalences associated to certain non-spherical objects. Typically these
are obtained by deforming the structure sheaves of (0,-2)-curves on threefolds,
or deforming $\mathbb{P}$-objects introduced by D.Huybrecht and R.Thomas
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