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The asymptotic density of finite-order elements in virtually nilpotent groups

Research paper by Pallavi Dani

Indexed on: 06 Jan '06Published on: 06 Jan '06Published in: Mathematics - Group Theory



Abstract

Let G be a finitely generated group with a given word metric. The asymptotic density of elements in G that have a particular property P is defined to be the limit, as r goes to infinity, of the proportion of elements in the ball of radius r which have the property P. We obtain a formula to compute the asymptotic density of finite-order elements in any virtually nilpotent group. Further, we show that the spectrum of numbers that occur as such asymptotic densities consists of exactly the rational numbers in [0,1).