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arXiv · 1410.8096

Longer nilpotent series for classical unipotent subgroups

Joshua Maglione
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Abstract

In studying nilpotent groups, the lower central series and other variations can be used to construct an associated $\mathbb{Z}^+$-graded Lie ring, which is a powerful method to inspect a group. Indeed, the process can be generalized substantially by introducing $\mathbb{N}^d$-graded Lie rings. We compute the adjoint refinements of the lower central series of the unipotent subgroups of the classical Chevalley groups over the field $\mathbb{Z}/p\mathbb{Z}$ of rank $d$. We prove that, for all the classical types, this characteristic filter is a series of length $Θ(d^2)$ with nearly all factors having $p$-bounded order.

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Joshua Maglione. 2015-04-24. Longer nilpotent series for classical unipotent subgroups. https://doi.org/10.1515/jgth-2015-0008

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