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math.AG2001
Non-Fine Moduli Spaces of Sheaves on K3 Surfaces
Andrei Caldararu
In general, if M is a moduli space of stable sheaves on X, there is a unique alpha in the Brauer group of M such that a pi_M^* alpha^{-1}-twisted universal sheaf exists on X times…
math.AG2000
Derived Categories of Twisted Sheaves on Elliptic Threefolds
Andrei Caldararu
We construct an equivalence between the derived category of sheaves on an elliptic threefold without a section and a derived category of twisted sheaves (modules over an Azumaya al…