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Tate motives and the fundamental group

Hélène Esnault, Marc Levine

Number 13
Author Hélène Esnault
Year 2007

Let k be a number field, and let S ⊂ P1(k) be a finite set of rational points. We relate the Deligne-Goncharov contruction of the motivic fundamental group of X := P1 \ S to the Tannaka group scheme over Q of the category of mixed Tate motives over X.

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