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Search options not deleted user 4008
20 votes
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What is the wild fundamental group?

Consider the category of algebraic integrable connections on a smooth connected algebraic variety $X$ with a base point $x$ (over a field of characteristic zero). This is a Tannakian category with a f …
Torsten Ekedahl's user avatar
17 votes
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Unipotency in realisations of the motivic fundamental group

Essentially because the Tannakian theory gives in the unipotent case (and only in that case) a reasonably sized answer with an easy motivic interpretation. For the size you should be aware that alrea …
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