Published January 1, 2022 | Version v1
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Difference sheaves and torsors

  • 1. Uniwersytet Warszawski, Inst Matematyki, Warsaw, Poland
  • 2. Uniwersytet Wroclawski, Inst Matematy, Wroclaw, Poland

Description

We develop sheaf theory in the context of difference algebraic geometry. We introduce categories of difference sheaves and develop the appropriate cohomology theories. As specializations, we get difference Galois cohomology, difference Picard group and a good theory of difference torsors.

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