On the Andreadakis problem

Autor: Darné , Jacques

Publikováno v: Topologie algébrique [math.AT]. Université de Lille, 2018. Français
Topologie algébrique [math.AT]. Université de Lille, 2018. Français. ⟨NNT : ⟩

Let $F_n$ be the free group on $n$ generators. Consider the group $IA_n$ of automorpisms of $F_n$ acting trivially on its abelianization. There are two canonical filtrations on $IA_n$: the first one is its lower central series $\Gamma_*$; the second

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