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Relations dans l'algèbre de Lie fondamentale des motifs elliptiques mixtes

Hain and Matsumoto constructed a category of universal mixed elliptic motives and described the fundamental Lie algebra of this category, relating it to a certain graded and filtered Lie algebra E. In an unpublished paper, Aaron Pollack proved a result on relations in a certain quotient of E, and gave several examples of actual relations in small weight that naturally lead to a conjecture about the existence of such relations in all weights. In this article, we prove this conjecture in depth 3, establishing the existence in all weights of relations of the type noted in Pollack's examples. ----- Richard Hain et Makoto Matsumoto ont construit une catégorie de motifs elliptiques mixtes universels et décrit l'algèbre de Lie fondamentale de cette catégorie en la reliant à une certaine algèbre de Lie graduée et filtrée E. Dans un article non publié, Aaron Pollack a démontré un résultat sur les relations dans un certain quotient de E, et donné plusieurs exemples de relations en petit poids qui conduisent à une conjecture sur l'existence de telles relations en tout poids. Dans le présent article, nous prouvons cette conjecture en profondeur 3, établissant l'existence en tout poids de relations du type décrit dans les exemples de Pollack.

preprint2015arXivOpen access

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