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for questions on one dimensional algebraic varieties over any field, including questions of moduli, and questions about specific curves.

7 votes
Accepted

A question about the Tannakian etale fundamental group of a curve

Al ulrich says, this is not true in general. If $X$ is non-compact (i.e. affine), then the Lie algebra of U is isomorphic to the free Lie algebra on $H^1_\mathrm{et}(X,\mathbb{Q}_p)^\vee$. Hence in th …
ChrisLazda's user avatar
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