
arXiv: 1801.07197
We show that, for a finitely generated residually finite group $Γ$, the word $[x_1, \ldots, x_k]$ is a probabilistic identity of $Γ$ if and only if $Γ$ is virtually nilpotent of class less than $k$. Related results, generalizations and problems are also discussed.
To appear in Proc. Amer. Math. Soc
Generators, relations, and presentations of groups, Primary 20E26, Secondary 20P05, Nilpotent groups, Probabilistic methods in group theory, FOS: Mathematics, Group Theory (math.GR), Mathematics - Group Theory, Residual properties and generalizations; residually finite groups
Generators, relations, and presentations of groups, Primary 20E26, Secondary 20P05, Nilpotent groups, Probabilistic methods in group theory, FOS: Mathematics, Group Theory (math.GR), Mathematics - Group Theory, Residual properties and generalizations; residually finite groups
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