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Results tagged with ag.algebraic-geometry
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user 486214
Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.
6
votes
1
answer
629
views
Tannakian-type reconstruction of étale fundamental group
I am interested in knowing which natural categories of its representations the étale fundamental group of a scheme can be recovered from.
Suppose $X$ is a scheme. Let $\pi_1^\text{ét}(X)$ be its étale …
- 83
2
votes
0
answers
111
views
Tannakian recovery of a group from other tensor abelian categories
Classical Tannakian reconstruction recovers an affine group scheme $G$ over $k$ from the category of its linear representations over a field $k$ (as the automorphism group of the forgetful functor to …
- 83