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arXiv · 1912.06886

Difference sheaves and torsors

Marcin Chałupnik·Piotr Kowalski
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Abstract

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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Marcin Chałupnik, Piotr Kowalski. 2020-07-09. Difference sheaves and torsors. https://arxiv.org/abs/1912.06886

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