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math.AG2008
The bigger Brauer group and twisted sheaves
Jochen Heinloth, Stefan Schroeer
Given an algebraic stack with quasiaffine diagonal, we show that each G_m-gerbe comes from a central separable algebra. In other words, Taylor's bigger Brauer group equals the etal…
math.AG2007★ 3 cited
Bounds for Behrend's conjecture on the canonical reduction
Jochen Heinloth
We prove Behrend's conjecture on the rationality of the canonical reduction of principal bundles and reductive group schemes for classical groups and give new bounds for the conjec…
math.AG2003
Coherent sheaves with parabolic structure and construction of Hecke eigensheaves for some ramified local systems
Jochen Heinloth
The aim of these notes is to generalize Laumon's construction [18] of automorphic sheaves corresponding to local systems on a smooth, projective curve to the case of local syst…